Environmental •Xg"j) J Assessment/Analysis - Reports ___ Report E0040 China - Liaoning Environmental Proj ect EA Category B Environmental Assessment 3 of 12 September 1993 This report has been prepared by the Borrower or its Consultant Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized
Transcript
Environmental •Xg"j) J
Assessment/Analysis -
Reports ___
Report E0040
China -Liaoning EnvironmentalProj ectEA Category B
Environmental Assessment3 of 12September 1993
This report has been prepared by the Borrower or its Consultant
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FAZEU
JUN o 9 1994
L..CE1VED
Ehvironmental Impact Assessment Report for Waste Water Contdol
Engineerina Projict
( Phase 1 ) in Fushun City
Written by
Liaoning Eavirormental Protection Scientific Research Institute
Category of evaluation certificate: class A
Number of evaluation certificate: 0933
Oct, 1992
recycled paper rfollo and environmeni
(Traslation)
Certificate for Eivirointal luact .Emluation
Name: Liamning Evirmental ProtectionScientific Research litute (LEPSRI).
t-alegory of certificate: Class A
Number of certificate: Gwobman pi!gzheng Jiazi 0933
Isued by: State Ewirisezt protection Burea .
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Legal Yepresentative of working unit:
Liu yu-ji Director of LEPSRI
Professional reepresentative of working unit:
Zhao ke-zhi Deputy director of LEPSRI
Project technical representative of working unit:
Sun yu-xiu Senior engineer in LEISRIJu Song-tao Deputy director of Fushun Erivironztal Protection
1. General description 11.1 Parpose of proposed project 11.2 Basis for Preparation 11.3 Evaluation method 21.4 Evaluation scope and standard 21.4.1 Evaluation scope 21.4.2 Evaluation standard 31.5 Hajor problems wust be evaluated and emvironmetal 3
protection object1.5.1 tlojor problems mst be evaluated 31.5.2 Ehviron tal protection object 41.6 Evaluatin working team 41.7 Evaluatim term and quantity of work 61.8 Relatiomship betwe enviromental evaluation and 6
feasibility sbtucy
2. General description of waste water cantrol 9programn and proposed project in Fush}m city
2.1 Waste water Control praume in Fushun city 92.1.1 Integating cntrol schem for water pollution 92.1.2 Control scheme for industrial pollution sources 92.2 General description of proposed project 102.2.1 Name and category of proposed project 102.2.2 Site, scale and constructian cost 10
.2.3 Interating cantrol program and pbase 1 11construction scime
3.1 Over all arsannt of wste water treatment plant 19and wsste water collection network
3.1.1 Over all plan araremt of waste water treatment 19plant and dimensions of major structures
3.1.2 Flow trend amd pattern r waste water collection 19network and received waste water load distributimn
3.1.3 Quality characteristic analysis for received waste 19water
3.2 Stu4r for treatmet tecdzolay 263.2.1 Tedclogical flow sheet of waste water treatment 26
plant3.2.2 !atcrial axx water quantity balance for waste water 29
treatmt plant3.2.3 Bad odour ad noise source analysis for waste water 30
treatment plant3.2.4 Quantity of smoke and dust discharged from heating 31
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boiler3.3 Quantitative analysis of pollulants discharged from 31
waste water treatment plant in emergency condition3.3.1 Quantitative analysis of pollutants discharged from 31
waste water treatment plant.when accident ishappened
3.3.2 Quantitative analysis for overflow in storm 31condition
3.4 Quantitative analysis of residents reuove 32( residents immigration ) for waste water controlproject
3.5 Identification of environmental impact 32
4. Natural and social circumstances around proposed 34project
4.1 Natural circumstances 344.1.1 Geographical location 344.1.2 Topography, landform 344.1.3 Rivers, irrigation canal, grous d water 344.1.4 Climate, Meterologieal characleristics 354.2 Natural biologieal resources 354.2.i Terrestrial plant 354.2.2 Terrestrial animal 354.2.3 Aquatic living beings 364.3 Natural protection area and artificial landscape 364.4 General description of social economies 364.4.1 Administr-tive division 364.4.2 Industrial, agriculture production, communications 37
aid transportation
5. Evaluation of present environmental quality for 38surrounding area adjacent to Proposed project
5.1 Monitoring and evaluation of present surface water 38quality
5.1.1 Monitoring of present surface water quality 385.1.2 Evaluation of present surface water quality 385.2 Monitoring and evaluation of present Shenfu 42
irrigation canal water quality5.2.1 Monitoring of present water quality 425.2.2 Evaluation of present water quality 425.3 Monitoring and evaluation of present -air pollution 44
sources5.3.1 Investigation for-preseat situation of air 44
pollution sources5.3.2 Evaluation for present situation of air polution 46
sources
6. Assessment and evaluation of environmental impact 49for proposed project
6.1 Rationality analysis for plant site selection and 49
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over all plan ran ement6.1.1 Analysis of impact an urban construction plan aind 49
economic development6.1.2 Analysis of impact an land occupation by plant 496.1.3 Analysis of iwact on development and utilization 50
for water resources6.1.4 Rationality analysis for over all pl arrangement 50
of treatment plant6.1.5 Aralysis of impact on natural landscape 516.1.6 Anlysis of impact om residents remave 516.2 Analysis of impact o envirornent for waste water 51
collection system6.2.1 Rationality analysis far pipeline trend of waste 51
water collection system6.2.2 Analysis of impact on municipal infrastructures by 57
waste water collection system6.2.3 Analysis of impact n environment during 57
constructiom period for waste water collection system6.3 Assessmt and evaluatian of irnmal impact 59
for waste water treatsent system6.3.1 Coqmrismn betwem different trmated effluent 59
discharge optinss6.3.2 Assessment and evaluation of environmental impct 59
for discharge of treated effluent6.3.3 Analysis of imact on envirnment for store up 67
( disposal ) of sludge6.3.4 Analysis of ipct on envirt for bad odcnw 68
diffused from waste water treatmet plant6.3.5 Analysis of imct an enviroment far noise created 69
in waste water treatment plant6.3.6 Analysis of impact- on evironmet for heating 72
boiler in waste wter treatmnt plant6.3.7 Analysis of imct on health of rsidents 'om 73
lived adjacent to irrigation canal for dischargeor treated effluent
7. Public participated investigation 757.1 Prrpose for investigation 757.2 Content and local point for investigation 757.3 Investigatian method 757.4 Investigation rsults 75
8. Analysis of potential envirametal impct 778.1 CeLlegary of potential environmental impact 778.2 Potential envirmental effect 788.3 Mlitigatory usure for potential emvirmental 79
iWpact
9. Protection sure for vi al impct of 80roposed project
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9.1 Law basis for protection measures 809.2 Environmental protection object 809.3 Environmental protection measures and lost 80
estimation9.3.1 Environmental impact mitigatory measure for waste 80
water collection system and cost estimation9.3.2 Environmental impact midigatory measure for waste 82
water treatment system and cost estimation9.4 Implementation and supervision or8anization for 84
protection measure
10. Analysis for instead options 8710.1 Implementation of total pollutants control and to 87
11. Economical profit and loss analysis 8911.1 Estimation of production cost for first phase 89
engineering11.2 Estimation of economical benif it for first phase 90
engineering11.3 Estimation of economical loss for first phase 91
engineering11.4 Benif it and cost ratio and profit and loss tatio 91
for first phase engineering
12. Management organization and management reqime 9212.1 Hanagement organization 9212.1.1 Structure of manrgement organization 9212.1.2 Personnel composition of management ornization 9212.1.3 Training of personnel in management organization 9212.2 nagement reqime 9412.3 Monitoring instzruments and equipmnnt 95
13. Conclusion and recommendation 9713.1 Cdnclusion 9713.2 Recommndation 101
14. Reference 102
15. Annex 103
16. Attached figure
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1. General description
1.1 Purpose or proposed project
Fushum is a cosrvehnive industrial city hzt coal wining,petroleum refine aixd emmical are the most important. Mong withdevelopment of economics,quentity of waste water discharged in urbanarea is increased rapidly. It tuev reached 740,000 M3 -pay at the end
- of 1990, amorg them, industrial waste water account for 84.3% of total.
For huge quantity bf mitreated industrial and domestic wastewater discharge to Hn river and Shenfu canal, the eviromentalqumlity is bo day by day. Monitored dEta demmstrate thatriver ter ql ty in rur sNections of Km river have worse thanclass V water standard, So It seriously influence the industrial and-agrialtu productiom and -helth of -residents in Pushun and Shenyanarea.
In arder to alleviate pollution protect eivient ard promotet1evelopment of ecnmics. A research prograie ws proceeded by JobnCnnell Gup of Australia and Liaoming Urban Costruction ConsultationCoupar. during 1987-1989 with the aid from Australia internatianal* velopment and kid Arency of Australia iovenmm t. A opeheive
- plan composed from a-number of basin control projects have been workedout th research.
Waste water control -engineering of Fushfm city is one of themajor enging, dmrsnB implementation of priority constructionprojects for basin control ( loan from world bank ). Wis project havevery impartant strategy meaning in control of water pollution inbasin, imprvemet of water envirnment of Ham river, increase health
-. level of residents and develpment of economics in basin.
1.2 Basis for preparation
Basis for preparcation of environmental impact assessment repo L--fr waste water ctrol engineering prject (phase 1 ) in Fushun Cityare:
*( 1 ) id _ _ U. . ~. I for municipal waste waterc control-engineering project in Fushum City"-.pr ed-4a Ag. 1990.
(2) "Feasibility studr rtpor for micipl waste water controlengineering project in Fushun city" .o-posed i Feb. 1992.
(3) "Outline of ervirmental iWpact assessment of mnicipal'
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sewage control project ( phase I ) in Fushun city -idraft)" pposed-inMay. 1992.
(4) Official document: Liao4kt-Qn-an (1992) l4o:024, issuedby Miaoning Einronmental protection Bureau, June 20,1992' writtenreply about outline of environental impact assessment of municipalsewage control project ( phase 1 ) in Fushun city ( draft )".
(5) Official document: (1986) GuxcHian Zi No.003 "circularabout issue of [ Environmental mna8eiaxt regulations on constructionproject 1.
(6) [ Water law of People's Republic of China 1.
(7-) [ Water pollution protection law of People's Republic ofChina ].
(8) Technical document No.139 pulishad by World Bark-Basicdocuments an enviroimimtal evaluation volu.e.[ Ir
(9) Amnkx 4A in working guide for World Bank envrironmintal-evaluation.
1.3 Evaluation method
1 -IBI. aethod was selected in evaluation for this project, everyposible -environmental problem and relation between them was analyzedone by one. Ehgineering- characteristics and environmental characteristic.of plant site for proposed project are basis for evaluation.Environmental laws, acts and rEgulations arn cri-t&i44a for evaluationparpose of evaluation is to protect the quality of environment thereproject is situated. >'- - s
1.4 Evaluation scope and standard
1.4.1 Evaluation scope -. ,14
According to that, proposed projectarie situated along Hun riverbank from Dongzhou to Sanbaotun, So the scope fur evaluation wasdetermined as follows:
(1) Evaluation scope of waste water collection -system arestarting from Dangzhou east and ended-to Sanbaotun of west, totallength 29 h loeeters.
(2) Evaluation scope of- waste water- treatinit system are acircular area, where regazd treatment-plant as the center and take aradions of 2:5 kilometer.
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(3) Evaluation scope of surface water are starting from Yong-anbridge monitoring section and ended to Donnlin bridge control section.
(4) Evaluation soape of health for residents are Lishi...irrisation district.
1.4.2 Evaluation standard
In accordance with the function and requirement of water inabove described evaluation scope, the following standards would beexecused to prepe " Envirnmental impact assessment for waste wateroontrol uenineering project ( phase 1 ) in Fushun city". .
(1) NB-60-89 Disdtare starxard for waste wa er and waste gasin- Liaoning Province.
(2) GB 3095-82 Air enviriental qualty standard.
(3) GB 383-8 Surface water enviromtal quality standard.
(4) GB 5084-85 h4riculture irrigation water quality standxrd.
(5) GB 5749-65 Drink water sanitatiox standard.
(6) GB 12348-90 Noise standard of boundary of iidustrialenterprise.
EIvironmetal standard for-bad- odour wold reference to TJ 36-79-Sanitation stazdad for design -of industrial -entrprise and foreignrelevant standad.
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1.5 Major problems-uust-b6 evaluated -aid envir*onaWl protection
1.5.1 ?aor probless mut be evlauated
A..ording to anmrx 4A-3 ilwaridrg-guide-f or World Bank- Eivirnmen:tal iqect assess; at Tor waste water control engineeringprojectV- cn be - sided as category B and the -following severalproblms must be eaphasized: -
(1) Tzd for pipe line mot'work of waste water collection-stem arnd ratianality of plant site selection for wste water
treatment plant should -be analyzedand discussed and- iWpact caused byproject to urban construction plan and economic develoment should alsobe evaluated.
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(2) Imact and damage to environment during construction pei-ed-4-or waste water collection system should be analyzed and mitigationmeasures should also be proposed.
(-3) hqact to environment during operation of waste watertreatment plant (mainly sold waste and bad odour ) should be analyzedand protection measureshould also be proposed.
(4) Different treated effluent discharge opticns should beanalyzed and discussed and impact to surface water by discharge oftreated effluent should also be assessed.
1.5.2 Environmental protection object, t .
In order to implemit developent of econoamics and envrorimentcoordinately, famitigation of enviromental pollution and dsage,following envirdnuental protection objects were- praposed in this timeof envirmrental impact evaluation:
(1) Be sure to keep the principal utilization Function ofenvironiet including municipal infrastructures wd ecologicalenvironmnt construction arounx the district where poposed project isstuated do not suffer damage.
(2) To keep present water. quality in urka section of Hm rlvercan remain it's eood coxdition; water environmental quality can getbetter srdually. Water quality of Hun river before Yong-en bridgesection can meet with class 3- surface water standard, after thatsection can meet with class 4 surface water standard.
(3) To promote water qualit:y in Shenfu canal can meet withagriculture irrigation standard gradually, Make grat efforts to causeenvironmtal quality arround irrigation canl can get batter.
1.6 Evaluation working team
Preparation work for 'Envixrometal ipact assessment for wastewater control engineering project' was undertaked principally byLiaoning Envirnmental protection Scientific- Research Institute,-participated unit is Fushun Bnvironmtal protection institute. Allpersonnel whom participate evalution work are visted in table 1-1,
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Table 1-1 Personnel list of participent
Name unit Technical Specialitytitle
Sun Yuxiu Lisoning provincial Senior Jivir talenvironment protection enBineer engineering
Zhang Xueqin ', Scientific research Water supply\ institute , anrd sewerage
Yang Shuqinr EHgineer Analysischemistry
2i2ai Jiareuo Assistant Water supplyengineer and sewerage
Hen Feaz - Fusmin environment Hy gy- onitoring station -
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5
1.7 Evaluation term and quantity of work
Evaluation term and Quankity of work related to .nvirnmentaliupact assessment for proposed project are illustrated in figure 1-1.
1.8 Relationship between enviromental evaluation and feasibilitystudy
Relationship between environmental evaluation and feasibilitystudy of proposed project are illustrated in figure 1-2.
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I EvnrorLmenW General Situation 2 Engineering Analysis 3 Current Stlate of Surface laterEnvironmensal Genea Siuto ___________ _onitornag and Assessngof Assessed Area (I) General arrennment of 1PT and(1) Natural environmental al 4at of wastater coLecting (I) Hun lier Fushun secUon waterconditions Geo°aphical P 5l] l 01,mipe e ty mo n c anad wte
(2)sciia economic conditions Impact discerament. J_istribution of enterprises,
Population distrbution Landuse,Naturat resources Economic/groft,cultural relic, hislorical._ site and landscape. 4x / 4 Pbuiic Participant Coniultatlon
/ ENYIRONIlETAL C 'CoUecting views for wastwatercr ilEAU \control project comes from the
b Administration Structure and l IASIBAER COF:OL C aperson not working at gover mentbenefits Analyob UMCIPAL ~~~~~~~~~~~and resident impacted.1) AdrinitraUou slruclure \ PROM IN J2) Admlnistration mtem FUSHU3) Costs and Benerits analsi a/ /\
7 lMtlgaUon countermeasure andalternatives. 6 Potential El Analysis 5 Pl Prediction and Assesment
(I) El mitigation countermeasure for () Beneficial impact and (I) Analysis of selectionwastevater collecting system. advanta geous Impact -eAsonbfit for locaUon of llP.
mligation countermeasure for 2) Direct impact and Inlirect ) Analti of lIwPEl ml aijais of arrangiTpac ad ndiec Lmentwuteiter treatment sysem Yain iact eanonbfft for pipelmne.point Is miligaton counter- 3 ort-term impact and long-term S l preUction and assessmentmeawure of foul smnell and dealing act. point is the impact oftrslun4e. olUive effect and negative lion, waste ter dischanger( P "in of oternatUves. Id J f c d eln mth sludge and foul smell. ,
Fig 1-1 Contenba of EIA
7
Revising the outline Revsing the veport
Assessment Wrtgouln EaminEAWrtnExlnnentrustment of EIA the outline report the repo
Environmental situationof assessed Area
the site__.Anal sisin . _ En ineenin ana.lysis. enviromerital -ang impacl disern.ment | features
Analymising . Project Current state of surface Feasibilitythe character Proposal water.*montormg and i study of the-pirLotecs of the _ _ assessing j project
Public participantconsultation
Lairs and. -Jregulation,
s tavndard t,El prediction Dand
Vaiew of EPB l < Potential El analysis
cons truction ll1,|itigation countermea-sure and alternatives
-|Benefits Analysish
Fig. 1-2 Relation of EIA Feasibility Study of the Project B f A y
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2. General description of waste water contrxol programme andproposed project in Fushni city
2.1 Waste water contr-ol programe in Fushun city
Waste water control programme in Fushun city is a compliextedsystematical engnieering, their characteristics are: (1) a huge of worikmust be done.(2) it involves a lot of problems and (3) it is a verycomprehensive subject.
In order to reflect the pollution control policy of ourcountry,- on the basis of detialed investigation, on site mnitorinlg andsystematical analysis a waste water control programme which composed.from pollution source treatment and indegrating control was proposed.
2.1.1 Integratins control scheme for water pollution
Ngcleus for integrating control of water pollution isconstruction of interoeption trunt to collect a pert of industrialwaste water and most of domestic sewage and led thei '
'po Sanbaotun to execute integrating- treatment ( reference to2.2
2.1.2 Control scheme for industrial pollution sources
So called industrial pollution sources, act4Wfiy they are 20most seriously polluted large industrial enterprises ( reference totable 2-1 ). waste water discharged from these enterprises ( pollutionload account for about 85% of total- pollution load for industrial wastewater of whole city ) must be treated to a -level which can meet with DB21-60-e9 ( discharge standard for waste water and waste gas in LiaoningProvince -) and then discharge to Shenfu irrigation cannal directly. Itcan be used for agriculture irrigation in irrigation season anddischarge to Beisha river and thenbEto Taizi river in unirrigationseason'.
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Table 2-1 Twlty Enterlprise -,nd Quantity of Their wastewater
lo. Eiterprise Quantity of water (T/D) Water qualitypresent 2000 tet
- Name of proposed project is waste water control enBineerins
2.2.1.2 Category of proposd projecl
Category, of proposed project is a umicipal envirozxmtalcanstruction engineer-ing belong to no o n consfru ctionproject.
2.2.2 Site, stle and costruction cost of project
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2.2.2.1 Site of project
<, Waste water control engineering project consist,from two partsi, e waste water collection system and waste water treatment system.waste water collectioin system is an interception trunk starting fromZhang dang (phase 1 from Dong zhou) at east and ended to Sanbaotun atwest total length 32.3 kilometers (phase 1 2Zkilometers); waste watertreatment system is located at Sanbaotun a village near lower reachesoF Hun river urban section. It is adjacent to Shenfu highway at southand to Hejiaxin village at north, occupy 46 hectares of landt- 15hectare for phase 1 ), position of proposed project can refer to figure2-1, 2-2 and 2-3.
2.2.2.2 Scale of project
Planned total -aquanlity of industrial and domestic waste waterwhich must be treated is 782,000 cubicum.fday att2000, among them500k,000 cubic m. fdw would be integratly treated by zynicipalgovernemt.
Engineering project would be implemented in three phases,quanlity of waste water to be intercepted in phaselis the finalcapacity 500,000cubic a./day, -capacity of waste water treatment plantin phase 1 is 250,000 cubic u./day.-
2.2.2.3 Construction cost of project -
Total cost for phase 1 is 199,000,000 yuan (according toconstruct a primary treatmaet plant which have a capacity of250 ,000cubic a./day ), among them 50% would lend from World Bank andremainder provided by our self.
2.2.3 Integrating control progranme and- phase 1 construction scheme
2.2.3.1 Present situation of waste water discharge in Fushun city
Urkban area or Fushun city is divided into six blocks by Hunriver, their tribularies and two coal mine open pit, Zhang dng, Dongzhou, Hebei, Hbnan , Wanhua -and -farmed -naturally. In present time,four catchments have -formed their drainage system, among them Henan and
anghen %wer combined system but Dongzhou and Hebei uere sepatesystem, two catchments i, e Zawgdang anc sthern coal mine area notyet form their draimage system. Shenfu canal was completed in 1965, ithave a length of 24 kilometers in urtan area, it intercePts most of
- waste water from Donszhou , Hebei.,and Wanghua catchzents. 150,000MIU (0.0667hW,) of farm land was been irrigated during irrigation season, in --nonirrigation season it passes through 58 kilcibters of open canal and
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W l~~~~~~~n Ftushun City and its Interception can$( -' I plmede seeg pnlag staliorn
discharge to Beisha river and then to Taizi river.
According to data collected in 1990, Fashun city have 457kilometers of drainage pipe line net work, served area 67.9 sq.km.Ataccount for 63.2% of completed urban area ), served population 843,700(account for 62.7Z of total population in urban area, Four sets ofwaste water pump station, Total quantity of waste water discharged inFushun is 740,000 cubic m./day, ( Among them 624,000cubic m./day areindustrial waste water account for 64.3% of total ).
2.2.3.2 Intergrating control prograae -
According to development uaster plan of Fushlun city, totalquanlity of waste water discharged from urban area of Fushun city wouldincreased to f86,000 cubic m./day at 2000 ( including 204,000 cubicn. /day of waste water discharged from coal mine and power plant ),among them 782,000cubic a./day -ust be treated ( industrial waste water522,000cubic a./day domestic sewge 260,000 cubic n./day ). Afterseveral-years of study starting from 1982, an actuai implementingprograme was proposed by Fushun urban cornstnrction Bureau, during1967-1989 John Comnell Grmop of Australia and Liaoning Urbanconstruction cansultation compeny worked out a research report aboutwaste- water control engineering prograume in Fushun city. All theseresearch made a similar conclusion that all waste water discharged fromurban area of Fushm city uust be collected and sent to any downstreamplacethrough interception trunk treated in a treatment plant. Treatedeffluent- can be used for agricultrne irrigaton in irrigation season anddischarged to Beisha river through open canal in nonirrigation season.
2.2.3.3 Phase 1 construction scheme
According to present economical level and financial ability ofour country, the construction policy and principal for waste watercontrol en8ineeringin Fushun city are:
(1) Waste water interception trunk would complete in one time.
(2) Waste water treatoment plant would complete by stages, aprimary treatuent plant which have a capacity of 250,000 cubic u./daywould constructed in phase -1, and It would become a secondary treatmentplant in phase 2, and another -250,00D cubic .f/day treatment plnt wouldbe completed in phase 3. Principal structures and equipment for wastewater collection system and treatment system in phase 1 are listed intable 2-2, 2-3 and 2-4.
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Table 2-2 Couponets for First Phase of Sewage collecting system
19 Belt conveyer L=36.5m 1 SludgeB=o.5& dewatering
house
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3.0 Engineering analysis and environmental impact identification
3.1 Over all arrangement of waste water treatument plant and wastewater collection net work
3.1.1 Over all plan arrangement o waste water treatment plant anddimensions of major structures
Recommended site for waste water treatment plant occupay 46hectares of land, 15 hectares would occupied in phase 1 engineeringconstruction 14 hectares would occupied in phase 2 and the last 15hectares in phase 3. Tw.o series of process system was arranged in overall arrangement, capacity for every series is 250,000 cubic m./day. Onlypri-ary treatment facility for one series would can constructed inphase 1, and the corresponding secondary treatment facility wouldcompleted in phase 2. Engineering structures for phase 3 was arrangedsymmetrieally with which was constructed in phase 1 and 2. It is thesecondary series. Over all plan arrangement of waste water treatmentplant are illustrated in figure 3-1. Dimensions or major structures arelisted in table 3-1.
3.1.2 Flow trend arnd pattern of waste water collection net work andreceived waste water load distribution
Interception trunk would start frou Zhangdaxg at east ( fromDongzhou in phase 1 ) and end to Snibaotun at west. Total length 32.3kilometers.
-Major communities which interception trunk post are Dongzhoupump station, road cross of Lueyang street, Beitai outfall, No.3 Xinfuoutfal,Guchengzi,Beizhen street, Beihoutun etc. Specific flow trend ofpipeline are illustrated in figure 3-2.
17 branches would connect to interception trunk, flowdistribution for branches are illustrated in figure 3-3.
3.1.3 Quanlity characteristic analysis for received waste water
According to plan prepared by Pushun project officeinterception trunk would recieve all domestic sewage and a part ofindustrial waste water in urban area. Domestic and industrial wastewater which discharged to water body upstrm -DahuD fang reservoirwould not be collected to municipal sewage system, waste waterdischarged from coal mine and power plant woulld be treated byenterprise thesself separately and the effluent would be discharged to
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[iZJ~~~ ~~~~~~~~~ __7~ | 3.oa$ r Xt l 25s -ac cholder 46. Ierhsing pn shtatio
^-~----~ n 5 .6 | th hner rark chntamber P 28 .arhtied spir.l fino grit ahannil
I L . . .L) L4 i= , | v g dag y.72.slulge g n lr!ng wol lrkh o.nl
I ~~~~~ ~~~~~~~~~~~~~Coal ndPower TwentyEtreased Enterprs 211 204lnTrearpr Treated
227 jJ 240
i 1 . Existing Shenfu New Municipal.aaI Interception'~Irnlb%n section) Trunik
:1~~~~~~~~~~~~~~~~~~~~~~4 415 I ~~~~~~~~~~~~~~~~~~~~~~~~~~ItegratedI, ~~~~~~~~~~~~~~~~~~~~~~Treatment inI ~~~~~~~~~~~~~~~~~~~~~~~Wastewater240 Treatment PlaLnt16I ~~~~~~~~~~~~~~~~~~~~~~~250
Hum river directly. Waste water discharged from 20 larger irnustrialenterprises would be treated in plant andl discharged to exist Shenfucanal .
Waste water dischaging system for Fushun city are illustratedin figure 3-4 and 3-5.
Estimated quality of waste water which was collected ininterception trunk according to figure 3-S and 3-5 are listed asfollows:
BOD 190 og/lCOD 422 mgllSS 204ug/1NH3-N 30Dg/tpetrolum 5.22g/lpherolics 0.706ug/l
,'f f-gur* ---- 3-4_-figur_ 3_
From estimated qualitity of waste water which was collected ininterception trunk, it can be seen that their characteristcs are asfollows:
(1) Characteristcs of petrochemical waste water was demonstratedby its high content of petroleum and phenolic harmful substances thancommon municipal sewage.
(2) Figure of B005 and cod are close to that is for comuonutinicipal sewage, ratio of EOD5 to COD is 0.45, it demonstrate that it isbiolegically digestible.
3.2 Study for treatment technology
3.2.1 Technological flow sheet of waste water treatment plant.
Proposed waste water treatment plant consist principally ofwaste water treatment and sludge treatment. Waste water was treated byA/0 process (only primary treatment would construct in phase 1). Itsflow sheet are illustrated in figure 3-6 and 3-7.
Treatuent efficiency for individual process are as follows:-
NO - Chemical dosage kg/dCO - BOD5 for influent f/1Ce - HE5 for effluent wJ1XO - SS for influent ugfIXe - SS far effluent ig/lCw(tOwl - BOW for primary sedimentated sludge mg/lC*w2 - Bal6 for secondary sedimentated sludge 1g/lXw(Xwl)- SS for primary sedimentated sluige ug/lXw2 - SS for secondary sedioentated sludge ue/l
According to figure 3-8, 3-9 and related data get fromfeasibility study of water control emgineering in Flushun city, a-terial and water quantity balandce to treatment plant have obtalnedth:ough calculation, the result arte l-isted in table 3-2.
Table 3-2 2aterial and Water Quanlity Balance for WastewaterTatuoent Plant
--Iaterial - Unit QusnlityFirstIbae Efineering Final Scale
Sludge frcm Priwey cubic m./d -Sedimentation Tank 68. s2 218 w2Sludie from secondary cubic u./dsedinentatio Tank
-l Water c=ntaining rate of 95 percent*2 Water cintaining-rate of 70 percet
3.2.3 Bad adour aid xvise sourse analysis for waste watertrwituet plant
(1) Bd odour source. analysis
Thrug investigation aid analysis at uiicipal waste watert-eatmt plant in-our courtry we know that-the- ad odour source inwaste water treatment pant is-screen; grit dcamber and aerationtank,lntensltY of bad aour in trtuent plant are listed in table 618
recyCled paper 30,eeoIo *nd eIvironment
and 6-20.
(2) Noise source analysis
Noise source in waste water treatment plant is coue from blowerhouse and pamp house principally. According to the type of blowers,water pumps and sludge pumps,noise intensity of t-hem are listed intable 3-4.
Table 3-4 Noise Intensity of major Equiment in wastewater TreatementPlant
Equipment Name Type Place of production Noise intensity
3.2.4 Quantity of smoke and dust discharged from heating boiler
Annually coal consuinption which was used for heating boi]er is1800 ton, coal is get from Fushun, their meating value is 87,650.7 Ailojoule/kg, sulfur content 0.9%, ash 20%. So the smoke and dustdischarged is caleulated and listed in table 6-24.
3.3 Quantitative analysis of pollulants discharged from waste water-treatment plant in emergency condition.
3.3.1 Quantitative analysis or poll 'tants discharged from waste water-.treatuent plant when-accident happened.
The largest accident happened in waste water treatment plant ispower failure, uriler this circumstances, discharged pollulants fromtreatuent plant is equal to the pollutants which enteing into , i, e.all waste water which was collected into intarception trunk is overf low to river or irrigation caral through over flow structures and donot under go any process.
3.3.2 Quantitative analysis for over flow in stom condition
Designed interception factor for interception trunk during
31recycled paper ecoog'v and en.rnnmen,
storm- is 2, over flow can not take place when seriously polluted earlyrain water arrive to interception trunk, but after the surface nm offreach the designed flow rate 2, the clean rain water begin to overflow.
3.4 Quantitative analysis of residents remve ( residentsimigratimn ) for waste water control project
Waste water control project ( includiinr waste water collectionsystem and treatment system ) either in construction period or inoperation period, never involve to any residents immigrationor residentsremove problem.
3.5 Identification of environmental impact
According to characteristics of -prposed project andenvironaental characteristics for site of proposed project,relationship between impact factor-and envirconental element forproposed project can be illustrated by table 3-5.
Fooe table 3-5 we- can see that the ujar impact factors forproposed project are land occupation, effluent discharge, bad odour andhludge disposal; the uajor enviromnental elemens which suffered from
-iwpact-are surface water, ground water;- public health and residentslife.
recycled paper-eolo&- and environment
Table 3-5 rhtrix relation-ship between lopt factor and envirmnental element
Period Iepact Bnvironiental elementSurface Qrxiz Air Eahsard Lardscap Dublic Residents Urban DEkmwater water vigetatlon health life infrastructure devely ipua
Constructlon Landocupation (-I (-) I-) (-)Pile of ear+h and rock (-) (-)Dist Noise C -
Note: 4 Lonm term positive iqavt- Lons tero negative lupoct(+) Short term pasitive impact(-) Short term negative iact
4. Natural and social circumstances around proposed-project
4.1 Natural circumstances
4.1.1 Geographical location
Fushun city was located in eastern part of Liaoning province,eastern longitude 123d19'42''-125d28'58', northern latitude 41d10''- 42d2B'32'. It is adjacent to JIlin privince at east ,contiquons toBenxi city at south, close to shenyang city at west arnd next toTielinm city at north.
Proposed waste water treatment plant would be constructed inSanbaotun, a village at west end of Fushun city ,down stream sectionof Hkm river. The plant was located at norhtern side of Shenfu highwayand southern side of Hejiaxin village ,with a distance of 40Km toShenyang city. 46 hectares of land was occuplied by the plant.
Proposed waste water interception trunk would be constructedfrom 2hangdang along south bank of Hun river to Sanbaotun waste watertreatment plant, total length 32.3 kilometer. It passes thrjugh allurban area of Fushun city, its geographical location was illustrated infigure 2-1 and 2-2.
4.1.2 Topography and land form
Fushun district is an -area occupied by Longgang mountain abranch of Changbai mountain system, average elevation 400-500., with ainelination down ward to west, western urban arer which ride both sidesor Him river is a river vally plain formed -from Liaodong avergeelevation 65-99 m.Waste -water treatment plant would be contructed near -
conflence of Hin river and Li-shi rivwer ,at an allnvial plain. A rouxndhere is an- open-terrain, topography is rather flat with an inclinationof about 2 ,elevation -or treatment plant is 65.5m.
4.1.3 River, irrigation canal ground water
(1) Water resources -in Fushun district is rather rich ,thelarger rivers are Him ziver Suzi river, She river, Chai river, Qingriver, Taizi river etc.Him-river rises from Gumnoling in WandianzitownshiF of Qin8yuan county, flow to west and passes through Fushun,Shenywag and converge with Ta-izi river at Janchahe and then dischargeto Bohai sea.
(2) Shenfu canal
recycled paper -* ology and envirnenmU
Total length of Shenfu canal is 8Z, 24k. passes through urbanand 5Skm passes through rual area. Designed capacity for startingsection is 62.000 cubic a./day for ending section in Fushun city is323,000 213/day, oelibrating cmpacity 463,000 cubic u./day.
(3) Ground water
Major aquiter in Azbtzh is sand layer, thickiess 3-10., typeof ground water -are pireatic mnd partially pressed water, flowdirection is from east to west approimately, dynmic variation aregreatly influenced by atmospheric pricipitation. For the sake of wastewater irrigation, ground water under the area of proposed waste watertreatment plant site have been-polluted in certain degree, petroleumontent os 0.17-0.48 m/l, pheolic substances 0.029,g/l, B(a)P0.02&e/l all of these figures exceed drink water standard.
4.1.4 Climate, Metearological characteristics.
Climate in this district is belorn to temperate zonecotinental climate acmnied with semihumid monsoor,. caused byinfluence of monsco. from sterm Asia, it is wam and win4y in spring,not and meirw in suer, chill. and short in autumn, cold and long in,winter. Major direction of wind is north-east east, absolute maximumair tQerature 36 C, absolute minimu. air tepratue -35'c, aunually*avage air temperature 7'c, awdwa wind velocity 2lm/sec, annuallyaverage wiid velocity 1.6 i/sec, annul average pricipitation 826.8 -,
Y annuallYaverage rain day 100, annually average snow day 24, annuallyaverage evaporation loss 1450m, annmally relative humidity 68,
-annually average fog day 25, the most often fog day 41, fog is marehaPened in Jan.-Feb. Inversion layer which u most involved in air-pollution- -is often happend in winte. Waste water tretment plant wasSituEated doknstnm for laJor direction of wind.
4.2 Natural biologiceal resnxfes
4.2.1 Terrestrial p_ant
Land suitable for forest -caltivation in Flushun city is9,059,000 Mu (0.067 ha), accowit for 53;.6: of total area. Forestcoverimg-rate 51. aBdow area 2-309,299 Nu, accoumt for 13.7% oftotal area, wild plant have-eight category aid- 273 species. Rareplant sare dragn spruce, (Picea asperata ), fir, northeast china ash,phellodadron, stina walnut, etc.
-4.2.2 Terrestrial animal
recycled paper umI.rc and ewvironm85
There are more than 200 species of rare animals in Fushundistrict, the-major species are badger, roe deer, pheasant, bear, deer,egret etc.
4.2.3 Agatic living beings
Therer are not a few resources in Fushum district, antificialbreeded species are silver carp, variegated- cap, grass carp, Africacrucian carp. Natural reproduced species are carp, -crucian carp,catfish, wild gill eel, shrimp tiger, salmon etc.
4.3 Natural protection area and artificial landscape
(1) Natural protection area
Fushun district is situated in eastern ucmutaimous area ofLiaoning Province.- forest ecological resources in this area is ratherrich, to protect natural ecological resources in this area have ani ortant- significance in ecological envirunmental protection of wholeprovince. The natural protection district which was determined byprovincial, *mnicipal and county govemts are: Laotuding (Old baldmountain) natural protection district in Xinbin county, Dahuofangrese-voir water resource protection district (provincial), Sarhuscenery protection district (amunicipal) and Hun river valley naturalprotection district (county).
(2) Artificial landscape
Artificial landscape in Fushun district are:ruins of Gor-ountain mere castle constructed, in jin dynasty (265-42DAD). Gormountain ancient tower constructed in Liao dynasty (916-1125AD), thefirst capital of Qing dynasty-Hetuala, constructed by Nurhachi thefirst emperor of Qing dynasty (around 1630 AD), Yongling-tomb ofNurhachi's forefathers, Yuanshuailing (morshal's tomb)-tomb of marshalZhang Zuo-lin (around 1930), Pingdingshan anti-japanese victin'ssremains memorial hall, Japanese war criminal prison museun, Leifengthe commism safeguard memorial hall.
4.4 General description of social economics
4.4.1 Administrative division
Administrative division of Fushun city is consist from fourdistricts.-ani three counties, they are Xinfu, Wanghua, Lutian,Shuncheng district and Fushun, Qingyuan, Xinbin county, progrummed urbanarea 199 k12, coupleted urban area 107.5 k=2, population in urban ares1,345,000 among them non-farmer population 1-,202,000.
Proposed waste water treatment plant are situated in Lishitownship area of Shmnchen district, irdustrial enterprises andagriculture production brigades arod the plant are: Xinfu steel-silter, wxygm genertor, orcnic glass nill, Fushun chemical plant,Organic chemical plant, Detergent chemical plant, Enamel mill, Fukanmgsand and gravel plant and Lihan, Lixian ,Sihan, Sixian, Erhan, Erxian,Sanhan, Sanxian, Tiantum, Hbdong, Hejiaxin, Sanbaotun agricultureproduction brigade and demonstrative farm. Residents in this area is31,954, area or cultivated land in this area is 17,760 Hu.
There are also 66 small industrial enterprises around the wastewater treatment plant, annual producLtion output 45,410,000 yuan, majorproducts are: prefabricated building components, comon brick, shotswater treatument agent and chemicals, rajor service trades are machine.shop, vehicle repaireaent, timber mill.
Residents lived around troatuent plant are:Han, Hui,Korea, Xibenationality and Man najority.
Proposed waste water trestment plant site have a very goodtraffic condition, Shenfu failway and Shenfu high way passes throughsouth side and Shenji railway passes through north side of plant. Allof these can provide a feasible condition for development of industrialand agriculture production there.
-reccled paper o neology and environment
5, Evaluation of present environmental quality for surroundingarea adjacent to proposed project
5.1 Monitoring and evaluation of present surface water quality
5.1.1 Monitoring of present surface water quality
(1) Setting of monitoring section
In order to understand present surface water quality forsurrounding area adjacent to proposed project, monitoring section forHan river set as follows:(refer to figure 5-1)
A. Monitoring sections in Fushun district: Shen8li bridge,Heping bridge, Sifangtai.
B. Monitoring section in Shengang district: Dongling bridge.
(2) Monitoring terms
Monitoring terms are: flowrate, water temperature, FH, SS, DO,COD, B(D5, valatile phenolics, petroleum, cyanide, NH3-N etc.
(3) Monitoring time
Water quality was monitored during every dry and rainy seasonfor recent tnree Years.
(4) Nonitored results
Monitored results get from each section are listed in table5-1.
5.1.2 Evaluatioan or present surface water quanlity.
(1) Evaluation parameters
Evaluation paruaeters for surfacs water are: DO, SS, COD, BOD,petroleam. volatile phenolics, cyanide, NH3-N.
(2) Evoluation method
Value classification method are used,water quality evaluationstandard -an refer to table 5-2.
38
recycled paper ecov *nd envronment
Table 5-1 Water (anlity Monitoring Restult of Fadc Section of Hum RiverUnit m/l (beside RH)
Section Itet Flow Tenperatur RH SS DO COD Bo( OiI Volatile CN NON*:(.3/s) C lbenol
S Total number of prameters used for evaluationWi Pbllution class (class of surface water)C Number of terms which exceed standard( ) Name of term which exceed sstandard.
(3) Evaluation results and analysis
Evaluation results for each section of Hun river are listed intable 5-3 and 5-4.
From table 5-3 and 5-4, we can see that each section of Hurriver is all seriously polluted, especially in dry season, number ofterms which exceed standard and exceeded times at pollutants are allmore than that is in rainy season.
Over all to say, evaluated section of Hun river would belong toclass water standard, major pollulants which exceed standard are SS,COD, B1D5,valatile phenolics, petroleum, NHB-N etc,in dry season.Inrainy season the pollutants which exceed standard are SS,C5D.
At Shengli section, only aOD exceed class V standard, valatilephenolics around the standard of class V in dry season, other termsurnier the standard of class IV.it sees to be lighter polluted thanother sections.
At hoping brige, four terms i.e SS, CD, BEC6, and NH3-N exceedclass V starniard in dry season, and tbree terms i,e s,s COD, petroleum
recycled paper e1ologs and nvnronm.i40
1.~~~~~~~~~A.
I.'Table 5-3 Each Sectton of Water Quality l5mitorirne Resu1tluhort water period)
Sectimo D S SS t BOD Otl Volatlle CN4 CH N3-N Pollution EBqwuein
X1inh-Bidie 1 I 1 )5 4 5 2 4 - 5-2 ( c) vlatile ph*Hepir Bridge I ,S >5 5 4 4 2 5 -4 SS a i 3-Sifaretai 4 4 I5 >5 )5 5 3 )5 O'5-5 (aflB Oil Vo1DiM11rg Bricge 4 4 >5 5 5 5 2 )5 Oi5-5 COD B Oil -Vol
Table 5-4 Each Sectlen of Water Q(mlity monItoring Result (Rich water period)
X ~~~~~~~~~~~Section DO Ss O OS 801 I5 Volat11le CINt NHN Pbllution ExBss10n
' ~~~~~~~~~~~~~~~~~~~~Phenol
n ~~~~~~~~~~~Xinhua EBridge 3 )5 >5 3 4 3 1 1 BWS2 (SS cD )Ibping Brildge 3 )5 )5 4 5 1 12 1 8W5-3 SS COD Oil)
Sifaegtai 4 >5 >5 4 4 3 1 4 W-2 (SS OD )
D^ling B!ridge 4 >5 )5 1 4 3 1 4 2 SS 00 )
I hTable 5-5 ?onitoring Result of water Quanlity for Shmfu Caiul Unit: v/l
Item Flow Hl Oi l Sulphide CN Volatile cm SS(T/O) Fhnol
At Sifangtai, the water was most sericusly polluted, five termsexceed class V standard in dry season.
At Dongling bridRe, althou ;zae pollulants occasionallyexceed class V standard, but -t is much better than that ofsifangtai ,exceeded times of pollulants is decreased.
5.2 Monitoring and evalustiom of present shenfu irrigation canal.water quality.
5.2.1 Monitoring of present water quality.
(1) Seiling of monitoring section.
Monitoring section for shenfu irrigation canal was set atSanbaotun and Chanrnan open canal (refer to figure 5-1)
From table 5-7 we can see that the water quality of changnanopen canal is rather good, it can meet with the agriculture irrigationstandard,but water quality of Sanbaotun section is rather worse forpetroleum and sultide exceed standared, exceeded times for petroleum is0,49 for sulfide is 0.42.
5.3 Monitorirng and evaluation of present air pollution sources.
5.3.1 Investigation for present situatuin of air polluation sources.
This investigation was proceeded according to net worki set byUrbtn-Eonstrution Bureau, 16 boiler 11 furnace and 21 chimney in thisarea was investigated and evaluated, Investigated results are -listed intable 5-8, total pollulants discharged in evaluation -district arelisted in table 5-9.
44
rccycled paper eeinogy *nid envinment
Table 58 11ain Pollutant DiscIage Statistics of PresentAir Pollution Saurce In the Ara
Unit Name No. Discharging Gas Discharge Barrxl Data Waste Gas iSn Pollutant Discharge RemarkEqui entt Coordinate Geometry Exit Inside Dischared Discharge l1'./h)
5.3.2 Evaluation for present situation-of air pollution sources.
(1) Evaluation scope.paraeter standard and sethod
A. Evaluation scope
Elvaluation scope for this project is a rectangular area,proposed 4eatuent plant was regarxed as the center and 2Km wasstretched to each direction, total evahlatiom area are 161Cm ,Fushm
-urgan construction coordinate are:
x: 32-36y: 58-62
B. Evaiuation pereeter
Evaluatimn paraeers are: Tsp, Sd2,N02:adi CD.
C. Evaluation standard -
"Air environeztal quality-standard' ( GB 3095-82 was used as..the standard ,standad vahle are listed in table 5-10.
...C j.nn.. 1per ecology and envuod n,.
Table 5-10
Evaluatim Parumeter S02 N02 TSP CD
Evaluation Standard 0.15 0.10 0.30 4.00
D. Evaluation Uethod
Equiscalar pollution load method was used ( Related formula wasneglected)
(2) Present situation evaluation -for air pollution sources.According to investigated results present situation of air pollutionsourves can be evaluated by equisealar pollution load method, evaluatedresults are listed in table 5-11 a1d 5-12.
From table 5-11 we can see that
A. In heating period, the total equiscalar pollution load are8936.37 in evaluation area, the point source equiscalar pollution loadare 8224.47 acconnt for 92.03% of total but area source equiscalarpollution load are 711.9,account for 7.97% of total.
B. In non heatin8 period ,the total equiscalar pollution loadare 7461.64 in evaluation area, the point source equiscalar pollutionload are 6930.79, account for 92.89: of total, but area sourceequiscalar pollution load are 530.85 account for 7.1lZ of total. Th.sshows that no atter it is in heating or non heating period theequiscalar pollution load frou point sources are the most importantfactor to be considered.
C. Fro. table 5-11 we n see that no mtter it is in heatingar non heating period, order or-pollution inpect are as follows:
SO2>N02> ISP>M
D. From table 5-2 -we can -see that in evalnatiom district ,themajor -ai-r polluter are detwent emicei plant ,Xinfu steel soelter,Fushun chemical plant and- enamel mill.
47
recycled paper c.,uo and enionnment
(1,
Table 5-11 Pollutton Source in the Aea Asseasire Result
. J Season SoUrCe Catesory Pt Pn hn(S}S02 RN lSP CO
(1 |Heati r Point Source 3894.93 3z58.70 1068.30 2.54 8224.47 92.03'Period Surface Source 222.47 139.60 343.03 6.80 711.90 7.97
;j Other smell Phterpsise 20.53 12.80 15.76 0.72 49.81 0.56
Total 4117.40 3396.30 1411.33 9.34 e936.37
I'
'n
6. Assessment and evaluation of environmntal impact for proposedproject
6.1 Rationality analysis for plant site selection and overall planarrangement.
6.1.1 Analysis of impact on urban construction plan and economicdevelopment
Site of urbn waste water treatment plant closely related toover all plan of a city, in over all plan of Fushun city it himapproved by state cohoreil in 19B3,the site and scope of waste watertreatment plant of Fushun have been cl9seribed and determined. In thisreport, the relationship between plant site and urban overall planwould be analysed -fmtr-m as follows.
(1) Municipal waste water treatment plant was sitated atSanbaotun. It is much far than 300 a from resident area and publicbuildings that was stipuplated by government, according to sanitationcondition, it would not bring with any bad impact to municipalarrangement and developoment.
(2) waste water treatment plant was situated at downstream sideof public drink water source the distance is much far than 5Om thatwas stipulated by government. So there is no any thrrat to safety ofwater supply.
(3) No any residence or public buildings are in dinstream sideof major wind direction which passes through waste water treatmentplant. This is conform to the requirment for selection or waste watertreatment plant.
(4) A portion of floodland was utilized by waste watertreatment plant. This coincide with the rule for selection oftreatment plant-to use as less as possible of good farmland.
(5) There is enongh unoccupied space aroumd. The plant site,this coincide with the arrangement of overall plan to prepare acondition for development in future.
6.1.2 Analysis of impact on land occupation by plant.
Capacity of municipal waste water treatment plant is 500,000cubic a./day, 250,000 cubic a./day, primary treatment plant would be
constructed in phase 1, 15 hectares of land would be occupied duringphase 1, among them most are rice field.
recycled paper eoiogv and envirntni
In order to urnderstand-the iuact to agriculture production byconstruction of waste water treatbmt plant, yield and price of riceand by produt was investigated, investiBated results wre listed intable 6-1.
Table 6-1 Paddy Yield Per uu,Rice and By-product Price of LishiIrrigated Area
Crop Item PaddyRicb By-product
Per mu Yield(kg) Preset 400 400nhOW7 450 450
Price(uan/kag) 1.50 0.10
Accordig to dtable 6-1, 144,000 yuan would be lost every yearfor land was occupied by teatoent plant, theoretical agriculture lossis 162,000 yuan.
6.1.3 Analysis of impact on developmet and utilizatian for water
Waste water treatmt plant was selected at Sanbaotum,somepositive iqact would be produced in further developmnt andutilization of water resource. The actual imact would be analysed asfollows:
(1) Waste water treatmt plant is neEr to irriation district,treated effluent can be utilized nearby for agriculture irrigation, sothat the waste water rense rate was increased and the water resouirewaste was decreased.
(2) In rn irrigation period, treated effluent which havemeet with the aischage standard can be discharged to Hum river directly. So that run off of Hm river would increase and also increase thevolume of water to recharge the aquifer under river bed around Shenyang-district.
- (3) Ground water around the Lishi area have been polluted dueto waste water irrigation, after the completion of waste watertreatment plant, treated effluent would be much cleaner than before. Soaround water quality would also yet better.
6.1.4 Rationality analysis for over all plan arrang-it of treatent
recycied paper crolopy and envirunnweroog *d ntttlt50
plant
Over all plan arrangement of treatment plant ere illustrated infigure 3-1. It is -almost rational, but some probleus are aiso exist,it can be discussed as follows:
(1) Related position of treatment structures should be arrangedas a whole for present as future phase, to avoid structures in everyphase have a style of one's own.
(2) Sludge treatment structures should be arranged together ina separate place, and a proper distance must be kept (more than 20 m)to another structures.
(3) Mlajor bad pKfi, sources such as screen aerated gritchamber and aeration tank s' gild be arranged far froo i aJniLstTitivebuilding to avoid any effec%. on health of working staff.
6.1.5 Analysis of* impact on natural landscape
There is no any natural landscape in area of proposed project,therefore, no any impact can be acted on natural landscape.
6.1.6 Analysis of impact or residents remove
There is no any residents lived in area of proposed project,therefore,no any residents remove problem is exist.
6.2 Analysis of impact on environment for waste water collectionsystem
6.2.1 Rationality analysis for pipeline trend of waste watercollection system.
(1) Basic situation
During period of feasibility study of waste water controlengineering in Funshun city, five alternatives was proposed, throughvarious analysis and comparison, three alternatives was selected tofurther discussion for their rationality,i e:
Alternative 1
All industrial and domestic waste water would be collectd andtransported by one interception trunk with a total length of 32.2kmconstructed by prestressed concrete pipe and rectangular concreteculvert and five waste water collection branch with a total length of
recycled paper ecology and envirenmel5l
24.4km, constructed by reinforced concrete pipe and five sets of pumpstations, designed collection capacity are 1,564,000 cubic m./day
Alternative 2
Four waste water treatment plant would be constructed, amongthem one larger would be constructed in Sanbaotun, three smaller wouldbe constructed in Zbangdang, Hebei and Longf eng respectively,corresponding trunk length 38.9kw. Branc length 24.4kn, three setsof pump statimn would be construted, designed collection capacity are2,181,500 cubic m./day.
Alternative 3
Waste water discharged from 2D major industrial enterprises wasseparated out and put into Shedfu canal after treatment by themselvesin plant, dowestic-sewage and rest of industrial waste water would becollected into proposed 32.31 -secondary interception trunk andtransported to Sanbaotun and treated there, designed capacity ofinterception trunk is 1,000,000 cubic m./day.
Basic situation of three alternatives are listed in table 6-2in detail.
(2) Analysis method
Matrix decision method was selected to analysis rationality ofpipeline trend, following steps would be included in analysis:
a. Sellection of state variable [0jI
According to actical condition of engineering scheme,econormical, environmental and social characteristics of engineeringscheme can be decomposed into seveml decision factcrs which candetermine that the scheme is good or bad. lhese factors are :
Eonosical factor: designed interception capacity, engineeringcost. residents removal.
Enviranuental factor:* degree of dwamae to vegetation, damageof infrastructures.
Social factor: temporary land occuprtion, permanent landoccupation.
Above decisian factor or namtural condition are the statevariable [ Oil in rationality analysis.
b. Sellection for again and loss value [Oij] of schese vector
recycld paper ecology and enrvonmert 2
Table 6-2 Basic condit.iox of alternatives for FUshun wmicipol tste wate collectire syste
After sellectian of state varibale, designed capacity,engineering cost, qopation cost, land occupation, degree of edauaaeto vegetation and damge of infrastructues of alternatives can beestimated (refer to table 6-2) ard then gain and loss value [Oij] can becalculated according to formula:
OiJ=- XIO
Where Main - Kinimum state variable (OIij=100)O 3 - State variable of individual alternative
c. Gain and loss matrix and final decision
After calculation of gain and loss value [Oij] at differentstate for atternative sdheme (Ai), gain and loss matrix would beconsisted (refer to table 6-3),gain and loss expectation would be alsocalculated according to following formula,the greatest gain and lossexpectation is the best scde in econamical,envirormental and socialeffect. That is also the wost rational schem in pipe line trend ofwaste water collection syste.
EAD) E Zj 4aj
Where E(Ai) = Gain aid loss expectationZj = Correct -coefficient for state variable
-(dtermined by expert)-. n Number of state variables
IJ = Gain and loss value
(3) Rationality analysis for pipe line trend
According to basic inforuation and data get from table 6-2 gainand loss value for diffrent scheme at different state can be calculatedby formula {6-1 and listed in table 6-4.
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Table 6-4 Gain and loss Volue of Alternativees jor WastewaterCollecting System of Diffrernt state
Correction coefficient for state variable are determinedaccording to marks given by related expert. They are listed in table6-5.
Table 6-5 Correction coefficient for state variable
Qi Qi Q2 Q3 Q(4 Q5 Q6 Q7 QS
zj 0.15 0.15 0.20 0.10 0.05 0.15 0.05 0.15
Take gain and loss value from table 6-4 together with correctioncoefficient for state variable -from table 6-5, a gain aid loss valuematrix table can be consisted, and a gain and loss expectation can alsobe calculated by formula 6-2, calculated results are listed ir. table6-6.
Frou table 6-6 we can see that, pipe line trerd -of alternative 3is the most rational one in alternatiwes. The advantage of thisalternative are as follows:
a. Most of waste water can be intercepted by gravity fornatural inclination of catchent -in urban area has been urtilized,energy was saved, operation -cost -was saved-simultanerusly. It is alsofeasible to anage and maintain.
b. This arrangement reflect the state policy of "coubineintergating control and separate treatment together" and reduceconstruction cost for interception trunk.
c. This arran-ement is feasible to-connect the proposed
rGcyc papal ecologv and envrininem6
interception trunk with existing canal, and give full play to existsewerage system.
6.2.2 Analysis of impct an muicipal infrastructures by waste watercollection system.
(1) Favourable impact: According to statistical material278,000 cubic =./day of waste water was intercepted into Shenfu canaland another 100,000 cubic u./day was discharged into Hn river directly,so water quality of Hun river was seriously polluted.After completionof proposed interception engineering, not only municipal sewaragesystem can- be perfected, but waste water collection network can also bereforoed at certain degrbee, collection capacity of interception -trunkwould be increased (2.6 times) -no any waste water would be discharged toHan river directly water pollution problem was eliminated.
(2) Unfavourable impact: Along the of track propsed waste watercollection system, no sny pipe line of water supply, coal gas, heatmedium and electric cables of power and commnication etc which belongto orben infrastbnctures was involved, so there is no any unfavour-able-imact can generated in these area, but a portion or black roadPEavemet would be dokanged when pipe line is in construction.About2.S65 sq.u. of pitch pavemet would be destroied in that time.
6.2.3 Analysis of imct enironment during construction periodfor waste water collection system.
(1) Impact to agriculture and natural vegetation duringconstruction period
586,980 sq.u. of land would be occupied during constructionPeriod, asoMn them prmxaenet occuriod land 41,258.7 sq.m.,te<onraryocupied land 545,72) sq.u., perwnaet occuried land includeprincipally road used for monitoring tour around buried pipe lineafter its completion, and lifting pump statien bouse temporary occupiedland include principally working site used for digging ditch, storageof txrm over earth, transportation of pipe and temporary storagecabin. Category and quantity of occupied land are listed in detail intable 6-7.
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Table 6-7 Calegory and quantity of occupied land
Cateqpry of Landuse Quantity of Landuse(sq.u.)
Permanent Landuse 41,258.7Aoongthem pipeline 26,800.0Pump station 14,458.7Temporary Landuse 545,720.0Auongthem paddy field Z7,572.4Dry farmland 40.956.0Vegetable farmland 196.470.0Road and discarded land 280,721.6
In addition to occupation of land during engineeringconstruction natural vegetation was damaged siuullaneously 3063 treesand 6,126 sq.m. of green land would be destroied,althrough thisdestrunction is reversible, but if trees do not planted intime whenconstruction period was over,ecological environment must be suffed fromlong term impact.
(2) Impact to environment due to strage of waste rock anitearth during constrmction period.
Waste i'ock and earth generaled during construction period waslisted in table 6-8, Prcm table 6-e we can see that the total volumeof the earth would- be dug and-turned over was 375,700 cubic u.but thevilume of earth used to backfill only be 180,000 cubic w.,of course,the resideual waste rock and earth would be piled up at wirking sitetemporaryly. So that,if these wastes was not disposed appropriately, itwould brought with certain impact to natural landscape.
Table 6-8 Category and vmolume of dry and- turned over earth and rockduring constrtion perlod
Name of Ehgineerinm Type of earth and rack excavated Quantily(cubic a.)
1. Pipe General earth and rock excavated 106,828.0Earth backfill 59,400.6
3. Inverted sihonm General earth and rock excavated 1,000.0Earth backfill 816.0
4. Pump station General earth and- rock excavated 2,172.05. Manhole General earth and rock excavated 1,134.0
58
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6.3 Assessmet and evaluation of envirornmntal impact for wastewater treatment system
6.3.1 Cormrison betwee different treated effluent discharge options
Accordirg to environmental condition of waste water treatmentplant, two alternatives can be selected to Shenfu irriBation canal,second,direct discharge to Han river.
Advantages for first alternative are:
(a) Effluent can be utilized perfectly in irrigation season,irrigated area can be increased, agriculture production can beincreased.
(b) Waste quality of Han river befor Shefyang section can bemaintained clearly, disadvantage for first alternative are :
Huge amount of investment is necessary for reform of exist opencanal, to enlarge water flow section area and increase their dischargecapacity.
Advantages for second alternative are
(a) Save money
(b) to increase rum off of Hun river and cause surface andground water along Hum river can uaintian their stable hydrologicalcharacteristics.
Disadvantage for second alternatives are :
(a) Water qaulity of Hun river would be polluted at certaindegree.
After to weigh the advantage and disadvantage of alternatives,although direct discharge effluent to Htm river is feasible, but anymeasure must be maintained to-discharge portion or whole effluent toirrigation canal to satisfy requirment-for awgricultur-e irrigationduring irrgation season. - .
6.3.2 Assessment and evaluation of environmental impact for dischargeof treated effluent
(1) Assessment method
a. Assessment model
Polsim model was selected as the wor-king means for main course
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of Hun river in Fushun urban section.
This model assumes that Hun river in Fushun urban section can bedivided into a number of node,and all input or output masses were allhappened at any node, it can be defined as
the evaluated value of a peramenter is the value when sum of squre fordifference between calculated and monitored value is the smallest.Assume that the objective function is F.
n 1
F= O: C(BD) t- (BD)'tt)s+ - A)
E(DO)t-(DO)'t)243 B-12
Where (BOD)t (DO)t culculated value when t=t(BOD)t' (DO)t' monitored value when t-t/N correction coefficient.here =1/2n number of samples
(BOD)t,(DO)t can be calculated from equation 6-5 and 6-6respectively DFP method can be used to find KB,Kp
When F - uinimuL
Calculated results can refer to table 6-8 table 6-9. Firstapproach at 16 C KB=1.141,1U= .857, secord approach at 16 CKB=1,185,KD=3.781. Results are dose to each other.
Table 6-9 Data and Resultsfor EDD5
Item Time (day) Temperature Result0 0.118 0.264 (day 1)
In order to verify the initateni ability of model,data ofsources intersity forpresent discbarged waste water can be used toanaloque that of Hun river and compare the results get frm model andPractice.lhe comparison result are listed in table 6-11.
a. Assessed water quality after completion of phase 1 project.
Dredeseribed water quality assessment model was used forassessment the assessed water quality after completian of phase projectis listed in table 6-13.
After completion of p_aseJ project, volume of waste waterdisciared to Shenfu canal Qould be 286,500 cubic a./day , aftercompletion of last pbase project, volume of waste water would be
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298,800 cubic a./day, these can be refered with assessed pollution loadof 20 major pollution sources (refer to table &-15), assessed waterquality in Shenfu canal is listed in table 6-16.
Period Pollution load (t/year)BOD5 V.P. NH3-N Phenol COD
After completion of 4602.65 71.17 11249.3 6792.65 1098.65First phase project
After completion of 4854.50 106.95 13505.0 7446.0 1095.0last phase project
a V.P. = Volatile Phenol
Table 6-16 A
Period Water Quality (mg/1)BOD5 V.P. COD SS Oil
After completion of 44.04 0.6811 107.65 64.96 10.5First phase project
After completion of 44.51 0.9806 123.80 68.Z7 10.0last phase project
a V.P. = Volatile Phenol
d. Assessed results analysis
From assessed results we can see that
(1) water quality in evaluated section of Hun river would bebetter than bbfore in certain degree after completion of phasee 1project, but if stile belong to class 5 water standard. Aftercompletion of last phase project, water quality in evaluated section ofHun river would be improved significantly. Before Xinhua bridge waterquality would be met with cl-ass 3 water standard and after Xinhuabridge it would be *et with class 4 water standard.
(2) Water quality in Shenfu canal would also be get uiLchbetter, it would reach or close to 'agricultmwe irrigation standard"after treatment in plant.
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6.3.3 Analysis of impact on environment for store up (disposal) ofsludge
(1) Composition of sludge and harmf ulness analysis
Sewage intercepted and treated in waste treatment plant offushun city are principally domestic sewage and local industrial wastewater, it has the characteristics of municipal sewage. Therefore, thecomposition of sludge generaled can be considred same as that of commonraw sludge generated from municipal waste water treatment plant.(refer to table 6-17).
Table 6-17 Composition of sludge
Item Content
Total solid substances 2.0-8.02TSSamong them volatile solid substances 60-80BZSSfat 6.0-30%TSSprotein 20-30%TSSN 1.5-6.0%TSSP( AsP2O5) 0.8-3.02ISSk ( AsK20) 0-1. %SScellulose 8-15.0XTSSorganie acid ( as H4C) 200-20001g/lC aa 55.1ppmZn a 55.6ppmPDa 155.86ppmCd a 2 4 .12ppm'2 a 2D.5ppm
Hea ~~~~~~~~~~~3 9 .5 ppmAsz 12.37ppm
Note: Data collected from pilut test for dioloqical L eatment ofsoutsern waste water in Shenyang city.
oPrm data listed in table 6-17 we can make some analysis asfollows:
A. As to a waste water treatment plant, if industrial wastewater are much more than domestic, the major harmful substances insludge generated from it would be heavy metals, if some industrialpollution sources were not so strietly control, the content of heavymetal in sludge would much higher than the average content in earth ofglobe (such as mercury, the average content in earth of globe is only7.7 a 1OE-6% = 0.07 ppm). Therefore, heavy metal is an important factorin control of sludge used as, a agriculture fertilizer.
B. If a heavy metal contained waste water was discharged from
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67
an industrial enterprise, it must be strictly treated in source andpermit them to dischar8e only when certain limit was reached. In thiscondition, heavy metal content in sludge from municipal waste watertreatment plant would be reduced significantly and harmfulness would bereduced simultaneously.
C. Organic substances in sludge is easy to rot and emit badodour, it is another important factor to cause environmental pollutionand must be noted and paied with more attention to.
(2) Impact to surrounding environmen.t by storage of sludge
After complition or first phase and last phase project forwaste water control engineering in Pushun, discharged sludge would be68 cubic u./day and 218 cubic a./day respectively. If these sludge werenot so properly treated and disposed, not only surface, around waterand soil would be polluted, but natural landscope and ecologicalequiibrium would also be damaged It is reporled that in some municipalwaste water treatment plant in china, they stack the sludge nearby ordischarge it to water, secondary pollution was brought to environment.Gaobeidian waste water treatment plant in Beihing ever blended driedsludge to treated effluent and used them for aguriculture irrigation,irrigated land was polluted in certain degree, copper content ofirrigated soil was double as that of contrast area. So that, finaldisposal of sludge for Fushun waste water treatment plant should besolved properly further.
6.3.4 Anysis of impact on environment for bad odour diffused from-waste water treatment plant
Bad odour in waste water treatment plant was generated fromscreen, aerated arit chamber and aeration tank. Bad odour concentrationin municipal waste water treatment plant have had been investigated byrelyted administrations in Fkuoka, Japan, investigated results arelisted in table 6-18.
Table 6-18 Seasonal Variation of bad odour Concmentration in MunicipalWWIP in Fukuoka City Japan
If we conmire and analyze the dada get frm Fuka withsonsible range for bad odour substances publi-shed in bad odourprevention act of Japan. ( table 6-19 ) It is obvious that ammonia isin first place either in exceeded frequency or in exceeded times.Therefore, amonia can be considered as a typical factor in analysis ofbad odour.
In order to further analysis of impact upon surroundedenvironent by bad odour, ammonia in Jizhuangzi WWTP in Tianjin wasmonitored, monitered results was listed in table 6-20.
Table 6-20 Monitored t" Concentration in Jizhuangzi WW7P Tianjin
Sample collecting place Distance (i) Concentration (mg/cubic n.)
Downstrem wind direction 0 0.43of Aerated tank 50 0.18
100 0.14150 0.10300 0.12500 0.10700 0.15
Fiom lable-6-2D we can see that where 50 meters froc downstramwind direction of eration-tank, aumonia-have been diminished to aconcentration which can meet with -Designed sanitaition standard forindustrdial enterprises" (1:36-79). ( maximm permited conctation inresident area is 0.2 mg/cubic a. ).
Final capacity of Fushun waste water treatment plant is 500,000cubic u./day, it is about two times larger than Jizhuangzi WWJP, if itcan be assessed by analogical method, the influenced area by bad odouris within 100. from pollution source.
Note: PfH of waste water for Fushun Wlr is quite close to thatof Jizhuangzi WrI? (PH 7.5-7.8).
6.3.5 Aralysis of iWact an envinent for noise created inr wastewater treatment plant
(1) Verified noise source of proposed project
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Intensity of verified noise source for waste water treatmentplant are listed in table 6-21.
Table 6-21 Intensity of Verified Noise Source for WWTP
Eqipment Installed Specification Quantity Power Noiseplace (kW) (dB)
(2) Assesssuent and evaluation of environmental noise
A. Assessment of environmental noise
According to position and intensity of verfied noise sources,noise at each assessment point (refer to figure 6-1) can be calculatedby sound reducing formula as follows:
b
a a/fl
Where
a - Long side of plane sound sourceb - Short side of plane sound sourceLO - Sound at rO distance from sourceLr - Sound at r distance from source
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@~ ~ ~ ~ ~ ~ ~ ~~~~~~~~- 6w - 6- 1
6m rkm h SE tu h
'3-~~~~~~~~~~~~~~~~~~~~~~~~~~~~-:
7 ,_ _ _ _ _ _ _ _ e 6 - t.
I. fl 6 t v - wwTu*1--- .11 i- n -1-1iD
a 1: I~
.1 . . .. - .- . . ~~~~~~~~.. s. .,u.. .~~~~~~~~.
scaLe
-- ~~~~~t .. ; Zs >
- t i- ffi j g Jr w-5- j" + ' @- 'f.j',: -
recycld paper iookg. and c,iviuxment
Assessed results according to above formula was listed in table6-22.
Table 6-22 Assessed Environmr.,,tal Noise
Point Noise (dB) Point Noise (dB) Point Noise (dB)day night day night day night
According to assessed results in table 6-22 the noise along*boundary line of plant would be calculated and listed in table 6-23.
Table 6-23 Noise along boundary of WWP
Time Noise Noise at Boundary of four Lisitsed(Average) direction (dB) Standard(dB) East South West North (dB)
Da3r 60 57 64 57 56 - 65Night 55 54 57 54 53 55
B. Evaluation-of noisy impact on environment
From table 6-23 we can see that assessed noise along boundaryline of plant is 60 dB in day and 55 dB in night, it can meet withlimiting standard at plant boundary line for class 3 industrialdistrict. For most of high noise source were- located at southern partof plant, noise at southern boudry line of -plant in hight is 57 dB,exceed 2 dB.
6.3.6 Analysis of impact on environment for heating boiler in wastewater treatment plant
In order to solve heating problem in winter, a boiler housewhich have a contruction area of 500 would be construated in firstphase of waste water control project in Fushun. Major equipments inboiler house are:
K2L240 - 13/p51178 - A2 Hot water boiler 1X2D - LG -4 dust remover ( efficiency 94 )
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Chimrey output dia 1l, length 30m.
According to engineering analysis, annual coal consumption forheation is 1800 Ton, *aximum coal consumption rate in heating period is1.2 Ton/hr, bumning coal are principally, Fushun coal, ash content 20%,net heatiin8 value 20,935 kCJ/kg, sulfure 0.9%, if the efficiency ofdust remover is better than 94%, concentration of dust in effluent gascna meet with the maximum permited dust concentration of 300 us/cubic m.which was issued by Liaoning przvince DB 21-60-89. The length ofchimney 30x, can also meet with the minimum length of chimney in DB -21-60-89. Calculated maximum concentration o' dust in effluent gas arelisted in table 6-24.
Table 6-24 Calenlated Maximum concentration of pollutantsin Heating Period
Season S02 N02 1SP Co Flue Discharge Dischargegas concen Standard
Frow table 6-25, we can see that afer cOqOpAtion -of waste water- control engineering in -Fshan ( first pbase ), in heating period,
wmXiDum hoUrly equisealar contribution is t0- only account for 1.92%- of total equisealar in this distrect in heating period. For Sanbaotxn
distriect in Fushun have a better back ground value in air environment,if` the boilers are better operated and managed in heating period, dustremover.<' maintain its coresponding efficiency there would no anysignificant ijpact to environment after completion of waste water
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73
control engineering in Pushun.
6.3.7 Analysis of impact on health of residents whom lived adjacentto irrigation canal for discharge or treated effluent.
According to investigation and study proceeded by municipalsanitation and epicremic prevention station of Fushun, it is belivedthat the healthy situation of resicents whom lived in Lishi irrigationarea is much worse than that of whom lived in contrast area,hepatomegaly rate for farmer is 94% higher than that of later, cancermortality is 2.85 times higher than that of later, infant deformityrate is 6.34f higher than that of later.
After completion of waste water contrrl engineering in Fushun,pollulant in treated effluent would much reduced and water quality inHun river and Shenfu canal would also much improved, of course, qualityor environment in irrigated area would be get better gradually and heal Lysituation of residents lived there would also get bettersimultaaneously.
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7. Public participated investigation
7.1 Purrpose for iiivestigation
Object for investigation is to understand the idea whatnongovernmental personnels, affected residents and farmers was thinkedabout the waste water control engineering and weigh the advantages anddisadvantages for proposed project.
7.2 Content and local point for investigation
MLjor investigation objects are necessity of project, trend orinterception trumk, rationality or plant site selection impact toproduction and every day life activity of residents and famers,investigation locus is emphasized to Lishi township location site oftreatment plant.
7.3 Investigation sethod
In order to set real opinion about project from public,everywhere seminar type or talk was selecled, neigbbou cadres, farmer'srepresenta tives was invited to participate the seminar, to announcevarious kind of speech tlrotgly.
7.4 Inverstigation results
A seminar was proceeded at Aug. 5,1992.8 neighbour eadres andfromers representatives was invited as goests, other participates werethe host, related experts from construction unit and evaluation unit,waste water control engineering and related problems were talked, talkedresultse can be summaried as follows.
(1) About waste water control engineering project (includeingtrend of intecleption trunk, site selection of treatuend plant), allrepresentatives whom participate the seminar express their opinion ofagree and support, they believe that this is a good thing for residentsand state. It have a good significant mamning in improvement ofenvironment and development of economics.
(2) For Lishi township have very few farmland but much morepoptlation, representatives hope that farmland ccupied by proposedengineering can exchange with a rational compensation, the farmers whomlose farmland can get an industrial work anAd eliminate the.r fear of
recycled paper erolog% and envwunn
disturbance in the rear.
(3) Necessary envirornKmtal protection measure must be selectedby treatment plant, to ensure that the environment arround plant sitedo not suffer froma any pollution or damage.
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8 Analysis of potential environmental impact
In order to urxxerstand the potential environmantal problem,environmental impact and evalution must be considered as the base andanalyze the potenlial environmental imlact as follows.
8.1 Calegory of potential environmental impact
From the over all view to see, municipal waste water treatientplant must have a positive effect to environment, but if the plantwas not be designed painstakingly, constructed earefully and managedprudently, it is posible to have a negative effect to environment,according to categary of effect, potential impact can be divided as intable 8-1.
Table 8-i Category of Potential Environmental Impact
Category of impact Direct Direct irndirect Indirectpositive nagative positive negative
Impact factor impact impact impact impact
Treated water discharge (+)can meet with standard
Treated water dischar-e ()in accident
Sludge pile up (+)unreasonably
Chlorine discharge (+)in accident
Block up or seepage (-)of waste water pipeline
Volatilization of ( )volatile matter inwastewater treatmentprocess
Notes: (+) - Serious iwpact -
(-)- Commo impact( ) - Slight iwact
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8.2 Potegory of potential effect
Through investigation of resemble treatment plant inJizhuangzi, Tianjin, above described potertial 4mpect can bequalitatively compared and analyzed as in table B-2.
Table 0-2 Potential Environmental Effect
Potential Happening Impact Environmentalijpact factor probability scope effect
Treated water a More than 95% Water coures Water quality of Hundischarge ran after out fall river arround Shenyangmeet with city world get betterstandard gradual.ly
Treated water Very little Water course Water quality of Hundischange in after out fall river arround Shenyangaccident city would get better
worse in short time
Sludge pile up Frequently if Arround pile Ground water would beunreasonably designed up site polluted and barmful to
unreasonable public nealty even causeor uagei pathogenic becteria
pollution
Chlorine Unpiudently Arround Seriously harmful todischarge probability is treatment plant public health andin accident low if managed especially agriculture crops
prudently dowstreamdirection
Block up or Very little Arroiud Ground water would beseepage of waste water polluted and harmful towaste water interception public healthpipeline pipe line
Volatilization Frequentily .Arround - IWpact to public healthof volatile treatment plantmatter in especiallywaste water down streamtreatment directionprocess
s Designed discharge reguirement-
78recycled paper olay and envirnunwn,
8.3 ?itigatory measure for potential environmnt impect
Mitigation measure for polential environmental iApact orproposed project was listed in table 8-3.
Table 8-3 Potential Environmental Ipact Mlitigation measure of theconstruction Project
Block up or Steel pipe (cast iron), Drainage Fushum Drainageseepage of prefabricated casing Naintenance companywastewater pipejoint reinforced Unit of thepipeline concrete fundation was Drainage
9. Protection measure for environmental inpact of proposed project
9.1 Law basis for protection measures
Legal basis for environmental impact protection easure orproposed project is Environmental protection law of people's republicof china", i, e.
Article 22-during preparing the developoet programe of acity, the environmental protection object and task must be determind.
Article 23-urban and rural construction work must combine withcharacharistircs or local natural environment, to protection vegetation,water body and natural landscape, to strengthen construction ofgardens, green land and scenic area.
Article 24 - the unit them generate environrental pollution or-other harm to public must bring environmental protection work intotheir routine working plan. responsible regime for environmentalprotection must be estableshed, effective measure nst be selected tocontrol the waste gas, waste water, solid waste, dust, bad odour, radioactive substances and noise, vibration electro ngnetic radiation etc,generaled during industrial production, construction or other activityand to prevent their pollution and harmfulmness -ipact to environment.
9.2 Environmental protection object
Environmental protection object for proposed project can refer= to paragraph 1.5.2
9.3 Envirrnmental protection measureds and lost estimation
9.3.1 -Envionomental impact mitigatory-measure for waste watercollection system and cost estiation-
(1) Mitigation measure for impact and damage to urbaninfrastructure construction by proposed project.
(2-) -Municipal waste water collection system (includinginterception tnmk and waste water- ump station) must be designedaccording-to-requirement described in un'am construction over all plani,e function of exist sewerage system must be utilized tbroughly, land
-- occupation wmst be reasonably and damsge to urban infrastructure mustbe as less as possible, the actual measures are:
recycled DaDer mlog and esviotkment
A. Different waste water collection regime may be selected indesign of urban sewer-age net work, in new constructed sewer-age district,separate sewarage system may be constructed, but in old constrictedsewage district ( principally have narrow street and more obstacle )-combined sewarage system xy be constructed.
B. Interception trunk can be designed according to data usedfor combined system. Trend and position of pipe line can be selected atsouthern bank of Hum river, at least 10 a to exist Shenfu canal andShenyang mater supply pipe, to aviod or reduce the probability ofacross large btiildings, structures and important public facilities suchas road, water supply, rain water and sewage pipe line etc as possible.
C. Position of waste water lifting pump station can be locatedat a place more than 50m from residential area and public buildings(including institutions and schools).
(2) Measures for reduce residents removal
A. Either in engineering design or construction period,rational utilization of land must be condsidered, such as selection ofdifferent collection regime to occapy as less land as possible.
B. An removal settlemt office must be established byconstruction unit to process related affairs about famers whomoriginally lived in occupied lad convert to worker or give them anycompensation.
C. A plan for farmers convert to workers must be prepared byremoval settlement office, to estimate the necessary compensation costProperly. All effort most be done to reduce any inflluence to farmerswork and life.
(3) Reducing measure to other environmental impact
A. Waste rock or earth generated during construction should bebackfilled as wore as possible, the remuinderr should be piled up orfilled to any suitable site but would not damage vegetation and naturallandscape.
B. It is better to construct pipe line which across the riverin dry -season, this can reduce the cost for measures to by pass thewater source and also reduce loss of sand anrd earth.
C. Damaged vegetation during construction mist -esumme tooriginal state as quick as posible after completion of work.
(4) Cost estimation
Estimated cost used for reducing environmental impact are
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listed in table 9-1.
Table 9-1 Estimated cost used to reduce Ehvironmental Impact forwastewater collection system
Item Quantity Units price Cost(yuan) (1000 yuan)
Infrastructure restoration cost 25,565 sq.u. 80 2,045.2Farmer to worker arrangemnet cost 80 person 5,000 400Vegetation restoration cost 3,063 trees 30 91.9
Total - - 2,537.1
9.3.2 Environaental impact mitigatory neasure for waste watertreatment system arkd cost estimation
(1) measures .for discharge or waste water when accident ishappened in treatment plant
A. Over flow pipe line mist be provided in waste watertreatment plant, if there is any accident happened, waste water canthrough over flow pipe line pass over portion or whole structures ofone treatment unit and flow into structures of next unit.
B. Tanks for every process unit uust mord than 2 or 4, ifaccident is happened in one tank other tanks can be still operatednormally.
C. If condition is permitted, double electrical power supplycan be equiped in treatment plant, to reduce accident of power failure.
D. Major equipment such as waste water pump slucge pump,blower etc should be equiped with one or two stand by equipment intreatment plant, if any accident is happened for one, another would beinsteaded at once.
E. When accident is happened in treatment plant, over flowedwste water can passes through over flow pipe to discharge to Shenfucanal or emergency water tank ( if necessary an evergency tank must beprovided in treatment plant).
(2) Measures for treatuent oi intercepted waste water duringstorm
A. According to average Interception factor for combinedsewaraeu system in rainy time is h=2, in order to keep treaentstructures can work normally in storm condition, capacity of structures
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and equipment before primary sedijentation tank must be designedaccording to maximnm flow rate during rainy time, at that time, wastewater detention time in primary sedimentation tank should not less than30 minutes.
B. Consider that duration time of uaximum design flow rate inrainy-tile is not so long end designed detention time in aeration tankand secondary sedimentation tarik is rather long ( detention time inaeration tank is 10 hours, in secondary sedimentation tank is 3 hours)so designed flow rate may little less than maxiu:m flow rate.
C. Rainy water pipe should designed in waste water treatmentplant, rain ater can be collected and treated on time, to avoidaccident of rain water flooding in plant yard awd environmentalpollution.
(3) neasures for treatment and disposal of sludge
A. Land fill was recommended as the final disposal method fordewatered sludge, dump site can utilize western dump site of Fukuangcompany, at a distance of 3.5Km from treatment plant.
B. Sludge fillina method at dump site must be listed as anind t chapter in feasibility study and primary design of proposedproject, and described in detial, effective protection measures must besum-itted.
C. In design of sludge dump site, transportation road,vehicle,water see page protection, fly dust controlling, rain water discharge,waste biogas control and dump site afforesting etc. must be consideredactual activity can refer to figure 9-1.
D. According to ground water hydrological condition severelmonitorinr water wells should be installed arround dump site to monitorwater quality periodically and supervise their development.
E. During the operation of dump site, especial administrativeunit must be established to prepare operation control regime,administrative plan and supervise their execution.
F. lhruough composition and harmful analysis we can understnadthat if waste watr which contain heavy metals was seriously oontroledin plant for their heavy metal content, dischared sludge from wastewater treatment plant would contain much less heavy metals, therefor,a sludge if their heavy metal content can meet with state dischargestandard, can be used as fertilizer or soil imzprnving additives. Butbefore large scale application, a pilot experiment in farm land isnecessary, for its suitability was depend upon actual experiment.
(4) Measures for control of had odour and noise
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A. Major bad odour sources (such as screen, aerated gritchamber, aeration tank, sluige dewatering house etc.) and noise sources(such as pu station, blower house etc.) must arsnged far froresidents are and administrative buildiing, the r-atial protectiondistance between thim should not less than 300., in order to increasethe efficient of isolation ever green trees can be planted inprotection area.
B. It is better to select lower noise centrifugal blower asthe aeration equipment, if Roots blower is selected, sound iliminatingdevice wust be equiped (such as XK type sound iliminator manufacturedin Beijing, or F-i or 2 sound iliuinator manufactured in Shanghai).
C. In order to reduce the impact to environment, hollow brickwall, double window, sound insolating board and sound isolating covermay be used in construction of blower and pump house.
(5) Mitigation uesures for envirnmental impact duringconstruction period.
Mitigation measures for environmental impact in waste watertreatmen system is -sa as that of in waste water interceptionsystem.(refer to paragraph 9.3.1)
(6) Plant area afforest
in order to iwprwve the envirometof waste water treatmentplant and enm sound in body and mind of working persons their, spacebetween buildings and structures or any gap must be afforested.(category of usually afforested trees and flowers can refer to table9-2).
Table 9-2 Categary of usually afforested trees and flowers
Road side Afforested Affcrested Flowers Hedgerowtree arbor sbrub
Chinese Chinese pagoda Small leave Feather Pbly headparasol apricot tiller covered cupresswalnut Chinese toor Chinese cabbage Golden ballmaple shiny-leaved wolfberry Deony cupresspoplar yellowhorn plum false chinese Tiller
five-pointed indigo hfrbsceousmaple date peonyppAa
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Table 9-3 Estimated cost used for environmental protection aroundwastewater Treatment system
Item Quantity Unitprice Cost(yuan) (1000 yuan)
Sludge disposal - 1,400Noise, bad odour - - 301.BpreventionFar-ers convert to 640 person 5,000 2,300workers settlementAfforest 10,000 sq.m. 30 300
Total - - 4,301.6
An exquisite and clean environment can be maintained. workingor living area such as adminitrative building, labratory, dining hall,dormitory etc must be isolated from treatment structures by a properbreadth of afforested zone, arround the open type treatment tank sodaand shrube must be planted.
(7) Cost estimation
Estimated cost used for alleviation of impact to enviranment bywaste water treatment system are listerd in table 9-3.
9.4 Implementation and supervision organization for protectionmeasure
During construction of proposed project, environmentalprotection measures would be executed by design institute anden8ineering contractor. Specification and requirement of environmentalprotection engineering must be included in engineering design andcontract, responsibility for both side should also be listed inengineering design and contract.
During starting and operation of proposed project environmentalprotection meamsues would be executed by waste water treatment plant ofFushun sewarage company. Their responsibility is to ensure thatenvironmental protection measures can starting or qpe-ation normally.
Fushun Environmental Protection Bureau and Fushun urban andrural construction and renewal project office are the supervisionadministrations for environmental protection easumes. Theirresposibility is to supervise the perfomance and efficiency ofenvironment protection measures during their starting anid operation.
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10. Analysis f or instead aptions
Iunicipal waste water integrating treatment is the mosteffective measure in contronl of pollution and iMrovement of waterenvironumtal quality, hat their first cost and operation cost israther high, it would supported by enterprises, institutions, residentsand governUmt, according to actual condition in Fushun city, anotheralternatives was proposed and analyzed as follows: '
10.1 implemtation of total pollutants control and to strengthenpollution soure treatent
Quanlity of waste water present discharged from Fushun city is740,000m3/day among them industrial waste water 624,0003/day accountfor 84.32% of total, domestic sewage 116,000m3/day account for 15.68=of total, estimeted that of 2000, quantity of waste water would beincreased to 986,0003/day account for 73.=6 of total and domesticsewage 260,000D3/day account for 26.4% of total, if these huge quanlityor waste water would not treated with proposed either treatedintegrately in ane large treatment plant or treated separately in unyindustrial enterprises. They can only be treated at their own source,and total quantity or pollulant would be controled according todilution. ability of receiving water body. If this alternative isselected, all industrial pollutants removal would be increased to 2.4times of present proposed alternative, althouth cost for constructionof interciption trunk and pump station is lower than former,but costpaied by a large number of industrial enterprises used -to constructtheir own treatment plant viuld much more than fermer, degree oftechnical difficulty would also higher than former, it is reported thatabout 36.8% of completed industrial waste water treatment facilitiescan not reach tneir design requirement.
Oxidation pond is easy to construct, simple to operate feasibleto uanage and less cost is -equired, but cxidation pond for its longdetention time large area of land is required, its treatment effect-largely depentd on weathe coDdition and it can bring with some negativeeffect to surrouiding envirnmet, it is estimted that if waste waterin Fushim is treated with oxidation pond about 2,000 hectares of landwould be occupied, so that for most of land in subub area of Fushun isgood frmland if bPare area or land ms occupied, it would bring witha lot of problems in volved with settlement of farmers whom loss theirwork, therefore oxidation pond is not so suitable for Fusbun.
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10.3 Land treatuent
Land treatment is similar with oxidation pond, large erea ofland is necessary, and land treatment would cause pollution of groundwater, generation of bad odour, propmgation of fly and mosguito,deterioration surrounded environment and iupct humn healts, thereforein 8eneral, land treatment for nmticipal waste water is not suitable inFushun.
From above disenssion we can think that all alternatives havetheir own disadvantages, in Fushun, at this peculiar condition, anyalternative to instead of inteqraling treatment umicipal waste wateris unfeasible.
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11. EBconomical profit and loss analysis
11.1 Estimation of prdiuction cost for first phase engineering
Total engineering cost in phaese 1 is 198,716,800 yuan, amongthem, land acquires cost 11,577,900, environmental protection cost7,138,900 if forming rate of fixed assets is 90(, dur-able life is 30years.
Fixed assets original value =( 198,716,BO-58,395,800-11,577,900 ) a 90% = 115,868,800 yuan
and maintenance6 Cost of deducting 74,156,000 (yuan) 1.7% 1,260.0
a percentage farmajor overhaul
7 Basic depreciation 3,670.0charge
8 Funds for pipe 58,395,800 (yuan) 7% 4,087.7network
9 Other 18,658,000 (yuan) 10% 1,865.8
10 Total 20,523.8Fixed 11,625.8Variable 8,898.0
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11.2 Estimation of economical benif it for first phase engineering
(1) Agriculture benefit
Capacity of treatment plant in phase 1 project is250,0cubic a./day, ir rigated area are 150,00OHu a 0.68 = 102,700 Mu.
For quality ot water would be improved after treatment, riceproduction would be imcreased simultaneously, if estimated increase inrice production is 15 kg/Mu.
lhen assume that:construction period 5 years,operation period 19 years,purchase price of paddy 700 yuan,export price of paddy $280 /ton,exchange rate $=5.8 yuaTi,trade fee 6%.
A. Price of rice ( yuan Pfon)
$280 * 5.8 = 1624 yuantrade fee = 700 a 0.06
= 42 yuanfreight fee = 0.07 yuan/Ton a 300km
= 21 yuanurice or rice in production site
- = 1624 - 42 - 21= 1561 yuan/ton
B. Production cost of paddy700 yuan a 0.15 = 350 yuan
C. Net benefit per ljjtn of paddy1561 - 350 = 1211 yuan/Ton
D. ner benf it per Nu in 19 years
i.t-4~I- -- i *
E. Total net benefit of 102,700 fu in l1 years102,700 Nu a 178.48 = 18,329,900 yuan
F. Annual land net benefitA =P(AP, 0.12, 19) = 18,329,900 s 0.1358 = 2,489,200 yuan
(2) Water resources benefit
For the sake of improvement in water environment after treating
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of waste water, clean water rsource was increased, if the price orwater resource is 0.05 yuan per m3, 4,562,500 yuan would be collectedanually.
(3) Indistrial productin benefit
Because of water quality in Hun river is improved, moreindustrial water can be abstxacted from Hun river directly, servicelife of water supply system and water circulation system would beelongated, annual saved main fenance cost would be 34,233,200 yuan.
All of above described economical benefit for phase 1engineering project would be 41,284,900 yuan.
11.3 Estimation of econoaucal loss for first phase engineering
Economical loss for land phase 1 engineering project isprincipally agriculture economical loss due to land occupation, itwould be calculated as follows:
if dur ation; time of occupation for waste water treatment plantis 24 years, net benefit loss for 24 years would be:
p 1 2 1 X O -4 K- ) - S 4 2 9 Li;
Construction land occupation is 225 Mu, their net benefit losswould be:
P = 225 a 5,234 = 1,177,700 yuan
Therefore annual agriculture economical loss would be:A = P(A/P, 0.12, 24 ) = 1,177,700 a 0.129 = 151,300 yuan
11.4 Benif it and cost radio and profit and loss radio for firstphase engineering
Benefit rate = 41,284,900/20,523,800 = 2.01
Loss and gain rate = 151,300/41,284,900 = 0.0037
Benefit rate for phase 1 engineerring projectis 2.01, loss andgain rate is 0.0039. lbus it ran be seen that this projet havesignificat economical benefit and should be executed as quick aspossible.
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12. Mbanagement organization and management regime
12.1 Management organization
12.1.1 Structure of manasement organization
- Administrative organization should be arranged. as in figure12-1 after completion of waste water control engineering project:figure 12-1
12.1.2 Personnel composition of management ornization
Composition of administrative organization after completion ofphase prlject is listed in table 12-1:
Table 12-1 Composition of administrative OrganizationAfter completion of phasel Project
-Organization PersonnelAduinis Technical Other Totaltration Management
fFushun UrbaLn hIDrainage Institute hConstruction Bureau Maintan
Fushun Drainage Municipal EngineeringCompaLny 11&TeaInm
lHepairs and Supply h- Rleplacements plia ll
jVehicle Team h j Laboratory
.____ Aite water h A nistrativeeament plant I Office l
Supervislon Institute M eter and Automatic Q eneral 1Control 9ecUon
Charge Station
Pumip StationAdmnistrative insUtute
Fig. 12-1 Administrative Structure
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(3) Thaining cource
Training cource are: waste wter treatment technol-.W, wasterwater treatment process and management, waste water treatmentfacilitues and their maintenance, trouble shouting for accident inwaste water treatment plant, regimes and-regulations in treatment plantetc.
(4) training plan
Senior technical manamgeent staff would be sent to trainingabroad organized by CUCRPO ( 1 - 2 months ), medium and primarytechnical management staff would be trained locally by senior staff (about 6 months ).
12.2 Management regime
Mlanagement regime is necessary for normal and steady operationof waste water treatment plant, following regimes must be established.
(1) Post responsibility regime
Fixed scope of responsibility must be prepated for everyworking post and operation quide would also be prepered for everyworkers.
(2) Safety regime
Safety must be the basic quarantee for normaloperation, andmust also be paied with much attention. Safety includ safety measure,dangerous chemical management, alarm device and safety mard etc.
(3) Examination,rewards and penalty regime
Operation ard management personnel must be examinedperiodically and recorded results into their technical archives so asto refer it as the condition for promotion. Some rewards can be save toany one whom outstanding achievements was tributed by him.
(4) Honitoring regime
Monitoring regime include monitoring point, monitoring termand monitoring fequency.
Monitoring point: inter and outlet of treatment facility.
Photo electric Wavelength 420-700 u. 2sectro I imter Type 721, Type 751
Biomicroscope 5D-1000 times 1
pI electric NS-73, FH 0-14 1potentioanmeter
DO analyzer 0-15.l/l, SJG-203 1
Moisture quidc umxial weight rang 1O0 1tester graduation 5 m
Sludge-concentratio 1000-5000r/l 1meter
Auto potential Z2-2 2titri meter
B. -Electrical equipmet
BOD culture box. constant teuperat2ue 2D C+1 21*250A
Fridge Volume > 200L 2
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High-temperatur-e 1200 C 1electric stove Auto-cntrolled temperature
Oven 35-20 oc 1Auto-controlled teuwerature
Electric centrifuge 0-4000 r/uiu 1
Mecianical vacuum Gas drawing rate 1puMp 0.72-l.8cubic u./h
Vacmm 5E-4
Data process equipment (such as uicrocomupter and stone typewriter) should also be included, total cost 300,000 yuan.
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13. Conclusion and recommendation
13.1 Conclusion
(1) Waste water control engineering consist froo two parts i, ewaste water collection system and treatment system, waste watercollection system consists principally of interception trunk, startingfrom Zhangdang ( phase 1 from Dor*gzhou ) at east and ended to Sanbaotunat west, total length 32.3 Xm ( phase 1 29 Km), waste water treatmentsystem is located at Sanboatun to northern of Shenfu high road andsouthen of Hejiaxin village, land occupation 46 hectares ( phase 1 15hectares ), environmental quality in engineering involved area are asfollows:
Vegelation
Involed area are rich in farest resources, forest coveragerate 51.8%, major trees are dragon sprace, fir, northeast china ash,yullow cork splinter walnut etc.
Soil
Soil around both bank of Hun river principally are arassym2rshland, paddy soil, brown earth etc, above category of soilbasically maintianed is original Hate, polluted soil was appeared incertain area ( Lishi irrigation district ), petroleum content of soilwas 300-500 mg/kg.
Surface water
Hun river is the largest river in Fushun city, it belongs toDaliao water system, along with the developement of economics, qualityof river water become worse gradually, in present time, Qualityu ofriver water of each monitoring sectian in evaluation district isarround or worse than class 5 water standard, major pollulant are OOD,BOD5, volatile phenolics, NH3-N, SS.
Shenfu canal water
For most of Shenfu canal received waste water have been treatedin plant, quality of waste water becam better gradually, but petroleumand suifide still exceed ' aqriculture irrigation standard " exceededtimes are 0.49 and 0.42 respectively.
(2) According to charactoristics of proposed project andc6ndition of environment around plant site environmental iwmact wasidentified and decided. proncipal impact factors for waste watercontrol engineering are sludge desposal, bad odour diffusion and
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immigrant settlement, sludge disposal can cause impact to grourni water,
soil and public sanitation, bad odour can effect air and publichealth, immigration can cause impact to agriculture production andresidents every day life.
(3) Through assessment and evaluation of environmental impactit is obvious that waste water control engireering project have greaterfavourable iwpact than unfavourable impact, positive effect greaterthan negative effect, their different impact canlisted as follows:
Favourable impact
After completion of proposed project ( phase 1 ) majorpollutants reduation are COD 32,250kg/day, BOD 87,500 kg/day, SS 89,500kg/day, NH3-N 13,600 kg/day, respectively, quality of water in ffHunriver at every major monitoring section would be iqpromed greatly,estimated water quality was listed in table 13-1.
Table 13-1 Water Quality in Hun river at every major monitoring section
Monitoring Section Water Quality (g/l)B0D5 COD Phenol NH3-N
Addition to water quality improvement in Hun river, for inplant treatment or many industrial pollution sources, water quality inShenfu canal would also became better incertain deqree, esfimated waterquality in Shenfu canal was listed in table 13-2.
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Table 13-2 Water Quality of Shengfu Canal
Time Water Quality vg/iB0E5 COD SS Phenol oil
Prent - 215.89 125.0 0.675 14.86
After cowletion 44.0 107.65 64.96 0.6811 10.5of the prject( pase 1 )
After completion 44.51 123.80 68.27 0.9806 10.0of the project( final pase )
Unfavourable impact
Unfavourable impact due to construct proposed project arelisted in table 13-3.
Table 13-3 Unfavourable impact due to cnstruct proposed project
Type of Impact Degree of impact
Vegetation daj.ge 3063trees and 6126 sq.u. grasslan would be damaged duringinterception trunk contruction
Short-term irastruure damge 25,565sq.m. pitch pavement wouldimpact be damged during interciption
trunk contruction
Temporary land 545,720cubic m. land would beoccjpation occupied during construction,
amorg them, farm land264,998 sq.u.
Waste earth and 37 5,700cubic u. earth and rockrock pile i;p would be excavated during
pipel_ne construction, backfill180,00D .3
Pemat 4i,258.7sq.u. land would beland occupation occupied by interception trunk,
46 hectares of land would beoccupied by treatmet plant
phase 15 ha )
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Long-term Sludge pile up 68 cubic m./day of sludge wouldImpact be generated after completion of
phase 1 project 218 cubic m./dayof sludge would be generatedafter completion of final phaseproject
Bad odour Bad odour impact area afterdiffusion completion of final phase
project would be 100m. fromtreatment plant
Noise Noise would exceed 2dB atsouthern boundary line of plantduring night
(4) Through plant site selection and pipe line trendrationality analysis it can be seen that recommended alternate is themost reasonable one in economic dffect, environmental effect and socialeffect. The representertive rationalities are:
A. Natural pagraph is ulitized throughly.
B. Construction cost and operation cost was been saved.
C. National policy or combine the integral and separatetreatment together was been executed.
D. Easy to connect with exist sewarage system.
E. Punction of exist drainage pipe line net work was beenacted.
(5) Through public particitated in restigation it was furtherdemonstrated that munoicipal waste water control engineering project isa project that has more advantage and less disaadvantage 100% ofparticipant support the project, they believe that this is a good thingfor state and residents, it can improve the environment, it isfavourable for development of economics, kut the problem of farmersconvert to works must be proper settled, and reasonbly solve thep-oblem of compensation to farmer for land occupation.
(6) Mumicopal waste water control engineering have certaineconomical benefit and huge social benefit, their positive effect areimprovement of environmental quality, control or pollution, to promatedevelopment of agriculture and industrial production, to increaseliving condition of residents. Estimated economical benefit for phase 1project are 41,284,900 yuan per year, loss and gain rate are 0.0037,
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benefit rate are 2.01.
(7) In order to alleviate impact to environment due toconstruct waste water control engineering, umuicipal infrastructureprotection measure, immigrants settlement measure, waste watr dischargemeasure during accident condition, waste water treatument measure duringstorm, sludge treatment reasure, bad odour prolection measure andpotential environmental iWaqct alliviation measure etc. was proposedacconding to environment analysis. All of these measures are feasiblefor economical condition in our country, it is possible to alliviateiWpact and damage to environment.
(8) Instend alternative analysis prove that only to controltotal quanlity or pollulants, treated with oxidation pond or landtreatment can not control pollution of wsate environment, presentseparate control system must be reformed. The only feasible approach isexeente the policy of to combine integrating control and separatetreatment togather and to construct a better scale and benefitmunicipil waste .water treatznet plant.
To sum up all above description, it believes that waste watercontrol engineering in Flushun city have greater positive letter thannegative effect, nmre active iWpact than passive impact. So tbat, if itis judged by economical, environmental and social benefit, thisconstruction project is feasible, plant site selection and trend ofpipe line are all reasoable.
13.2 Rpcomeendation
Waste water control enineering project is a project whichreceive loan from world bank, in order to execute the managementpriLcipal published by state gernment, all environmental protectionmeasures for project itself, construction unit must execute the w threesame time " regime, i, e major construction engineering and pratection
easures must be constructed synchronously.
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14. Reference
Environment mnagement for construction project ]BeijingUniversity pulishing house. Sep.1990
t Guide for envirormentaliupact evaluation ]Tianze publishing house. Feb.1990
t Environmental evaluation data book]Chemical publishing house Aug.1988
t Examples for envirnmental imact evaluation ]QCinaenviromental science publishing house. Nov.1988
* Practice ofenfvironmental imact evaluation in developingcountries I
Chinaenvironmetal science publishinig house Dec.1986
lar.1991i Watersupply and drainage design handbook ]
China architectural irxustrialpublishing house. Dec.1986
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15. Appeidix
1. Announcement frm Fushun plan comities about aproval ofhIshun waste water control ugineerin8 project issued by state planco=ittee, Fuji touzi [19921 605
2. Announcemt from Liaonins povincial plan comittee aboutapproval or Fushum waste water control engineering project issued bystate plan committee Liaoji [1992] 56
3. Approval about Fushun waste water control engineeringproject issued by state plan comittee Jitouzi [1992] 516
4. Outline of environmental impact assessment of municipalsewage control project ( Lbe first phase ) in Fushun city ( draft )Hay.1992
5. Approval about outline of environmental impact assessmentof municipal sewage control project in Fushun city ( draft ) Liaohuan8uanhan [1992] 024
