Wastewater Treatment Plant -...

1

Wastewater Treatment PlantNablus West

Annual Report for Operations and Reuse

2017

February 2018

Prepared by

Eng. Suleiman Abu Ghosh

Eng. Yousef Abu Jaffal

Mr. Sameh Bitar

Eng. Mohammad Homeidan

Eng.Yazan Odeh

1



2017

February 2018

Prepared by



Mr. Sameh Bitar


Eng.Yazan Odeh

1



2017

February 2018

Prepared by



Mr. Sameh Bitar


Eng.Yazan Odeh

1

TABLE OF CONTENTS

1. ABBREVIATIONS............................................................................................... 3

2. INTRODUCTION .................................................................................................4

3. BACKGROUND ..................................................................................................5

3.1 Location of the WWTP Nablus West .................................................................................5

3.2 WWTP Nablus West ............................................................................................................6

4. GENERAL PERFORMANCE .............................................................................. 7

5. OPERATION OF WASTEWATER TREATMENT PLANT FACILITIES ............... 7

5.1 Screens and grit/grease removal .......................................................................................7

5.2 Two Primary sedimentation tanks with total volume (1,728 m3) ...................................7

5.3 Two Aeration tanks with total volume (18,000 m3) ..........................................................7

5.3.1 Nitrification and de- nitrification .....................................................................................8

5.4 Two Final sedimentation tanks with total volume (7,718 m3) ........................................8

6. OPERATION OF SLUDGE FACILITIES ............................................................. 9

6.1 Two Belt thickeners..............................................................................................................9

6.2 Primary thickener tank (548 m3).........................................................................................9

6.3 Anaerobic digester (3650 m3) .............................................................................................9

6.4 Gas balloon holder (660 m3) .............................................................................................10

6.5 Gas flare ..............................................................................................................................10

6.6 Sludge drying beds ............................................................................................................10

6.7 Two Belt Filter Presses......................................................................................................10

6.1 Other facilities .....................................................................................................................11

7. SCADA SYSTEM .............................................................................................. 11

8. PERFORMANCE OF WWTP ............................................................................ 12

8.1 Influent flow .........................................................................................................................12

8.2 Cleaning performance .......................................................................................................13

8.3 Power consumption............................................................................................................14

8.4 Gas production....................................................................................................................15

8.5 Desulfurization Unit ............................................................................................................15

8.6 CHP engine .........................................................................................................................16

8.7 Nablus CHP electrical figures...........................................................................................17

8.8 Online measurement For Nitrogen and suspended solids in the aeration tanks:.....17

9. PREVENTIVE MAINTENANCE......................................................................... 18

10. STAFF TRAINING AND ORGANIZATION STRUCTURE ................................. 18

2

11. REUSE PROJECTS.......................................................................................... 19

Table 1: Reuse projects by treated wastewater ........................................................................20

Table 2 : Results from reuse pilot project inside scheme ........................................................23

12. Future Improvements ...................................................................................... 24

13. Problems & Challenges in 2017...................................................................... 24

14. Staff .................................................................................................................. 25

15. Annexes ........................................................................................................... 28

Annex 01: Daily pattern readings of daily inlet flow ..................................................................29

Annex 02: Graphs ..........................................................................................................................30

Annex 03: Performance summary ...............................................................................................40

Annex 04: Power consumption ....................................................................................................40

Annex 05: Additional lab Tests in WWTP Lab ...........................................................................41

Annex 06: External laboratory analysis.......................................................................................42

Annex 07: Quality of tertiary treatment systems........................................................................43

16. Photos .............................................................................................................. 44

3

1. ABBREVIATIONS

µs/cm: Micro Siemens per centimeter NM Nablus Municipality

Al: Aluminum element NO3-N: Nitrate as nitrogenAT: Aeration tank Pb: Lead elementB: Boron element PE: Population equivalentBOD: Biological oxygen demand PLC: Programmable Logic Controller

Ca: Calcium element PO4-P: Phosphate as phosphorousCd: Cadmium element SAR: Sodium adsorption rationcfu: colony fecal unit SCADA: Supervisory Control and Data Acquisition

CH4: Methane Se: Selenium element

Cl: Chloride SO4: Sulphate compoundCn: Cyanide element TDS: Total dissolved solids

Co: Carbon monoxide TN: Total nitrogen

Co: Celsius degree TSS: Total suspended solids

CO2: Carbon Dioxide UV: Ultra violetCOD: Chemical oxygen demand WSSD: Water supply and sanitation departmentCr: Chrome element WWTP: Wastewater treatment plantCu: Cupper element WUA: Water user associationDO: Dissolved oxygen Zn: Zink elementFC: Fecal coliform Ni: Nickel elementFe: Ferric elementGIZ: Gesellschaft für International ZusammenarbeitHg: Mercury elementJV: Joint ventureKfW : Kreditanstalt für Wiederaufbaukg/d: Kilogram per dayKm: KilometerKPR: Kinetics- Passavant ReodigerkWh: Kilowatt hourLi/HEC: Consultant Lahmeyer and Hijjawi EngineeringCenterm³: Cubic meterMBAS: Methylene blue active substanceMCC: Motorized control centreMg: Magnesium elementMLSS: Mixed liquor concentrationMn: Manganese elementMoA: Ministry of Agriculture

Na: Sodium elementNH4-N: Ammonium as nitrogen

4

2. INTRODUCTION

Water supply and sanitation department (WSSD) is considered one of the important

departments of Nablus Municipality (NM) that provides safe drinking water and sanitation

services to Nablus citizens and several surrounding villages in addition to four refugee camps,

namely, Balata, Ein Beit Elma, New and Old Askar Camps. It is estimated that 230,000

inhabitants receive drinking water services. Water and sanitation department has a staff of

300 employees including engineers, technicians, skilled and unskilled laborers.

In 1998 the financial agreement for the implementation of Sewage Project Nablus West was

signed between the German Government through KfW and Nablus Municipality. So far the

allocated fund reached up to 39 million Euros. The Project consisted of construction trunk and

interceptor of 12 km and wastewater treatment plant (WWTP) of 150,000 PE. The WWTP was

designed to treat 14,000 m3/day and 8.0 tons of BOD5 per day. The plant is located near Beit

Leed village junction. The wastewater is collected from Zawata, Beit Eba, Beit Wazan, Deir

Sharaf and Qusin in the future by gravity after the implementation of relevant sewerage

networks.

Nablus West catchment area presently has a population of about 120,000. Presently about

95% of the population of Nablus west is connected to the sewerage network. The main

objective of the sewerage project Nablus West is:

Improve the environmental and health conditions in upper Wadi Zumer

Protect the surface and groundwater from pollution

Reuse of treated wastewater for irrigation purposes

The construction works of the project have been completed in July 2013; however it was put

into operation in November 2013. The consultant Lahmeyer and Hijjawi Engineering Center

(Li/HEC) who provided the consultancy services for Nablus west sewerage project had issued

the performance certificate to the contractor the JV of Kinetics- Passavant Reodiger (KPR) on

September 23th 2015.

Operation assistance (OA) for two years at the cost of 1.10 million Euros has been allocated

through KfW to provide operational assistance to operate, guide and train NM WWTP staff.

The OA was provided by the KPR which was concluded in November 2015.

A second phase of OA financed through KfW is provided now by Consul Aqua to guide the

WWTP staff on part time basis.

5

3. BACKGROUND

3.1 Location of the WWTP Nablus WestThe WWTP Nablus West is located approx. 12 km West of Nablus City and lies on a much

lower orthographical level than Nablus City. Ideally, wastewater is flowing into the treatment

plant through gravity sewer system.

Figure (1): Section of a topographic map in Figure (2): Direction of slopethe project area

Figure (3): Overview of WWTP Nablus West

WWTPNablus West

5

3. BACKGROUND






WWTPNablus West

5

3. BACKGROUND






WWTPNablus West

6

3.2 WWTP Nablus WestThe WWTP Nablus West is operated as an activated sludge process with a mechanical

treatment, a biological treatment and a sludge treatment steps with gas utilization. In Figure

(3) shows an overview of the WWTP Nablus West. Three construction stages have been

planned for the WWTP Nablus West: stage 1 with a design horizon in 2020, stage 2 with

design horizon in 2025 and a final stage 3 with design horizon in 2035. During the first

construction stage only the colored parts in green of the WWTP (Figure 4) were implemented.

Figure (4): WWTP Nablus West

7

4. GENERAL PERFORMANCE

Around three millions nine hundred and forty seven thousands (3,963,000 m3) cubic meters

of wastewater were treated in the year 2017, with an electrical consumption of two millions

nine hundred and thirty six thousands (2,998,000 kWh). During last year, in general the

average lab results were in line with the Palestinian standards. The average effluent

concentration of BOD5 was 7.7 mg/l and TSS was 13 mg/l. By these results, the treatment

efficiency in terms of BOD5 and TSS were 98 % and 98% respectively.

5. OPERATION OF WASTEWATER TREATMENT PLANTFACILITIES

5.1 Screens and grit/grease removalThe wastewater treatment in Nablus west began with a screening unit. The screening unit

consisted of two types of screens. The first is coarse screen (bar space of 5 cm), and the

second was fine screen (bar space of 5 mm). The main objective of this unit was to protect the

facilities from plastics, woods, rubbish and etc. The screened solid material removed by the

screen conveyors for disposal.

Grit/grease removal unit was designed to remove sand and grits/grease from wastewater. The

grease was sent to the anaerobic digester however, grits/sands were washed out by treated

wastewater in the grit classifier to sanitary disposal.

5.2 Two Primary sedimentation tanks with total volume(1,728 m3)

In this unit, around 60% of organic suspended solids were settled down in two rectangular

tanks forming primary sludge. The primary sludge was thickened in a gravity primary thickener

to increase its concentration from 1% to 4% to be digested in the anaerobic digester in a later

stage.

5.3 Two Aeration tanks with total volume (18,000 m3)The biological wastewater treatment in the aeration tanks was the core of the WWTP. High

concentration of special aerobic bacteria and other microorganisms were activated in the

aeration tanks at existence of high concentration of oxygen called activated sludge. The

soluble and other suspended organic material was digested by bacteria .This unit has to be

controlled in terms of the concentration of activated sludge and dissolved oxygen content.

Almost 90% of the power consumption of the WWTP is required to operate theses two tanks.

8

5.3.1 Nitrification and de- nitrification

The plant was designed for COD removal. Nitrification and de-nitrification also phosphate

elimination was not foreseen in the first stage. However, on the 17th of March, 2015 the plant

started to perform nitrification, and de- nitrification process in the aeration tanks in addition to

carbon removal process.

Inlet AT

Outlet AT

Figure (5): Aeration tank with implemented de-nitrification zone

In areas where oxygen was reduced, there were bacteria starting a de-nitrification process. In

de- nitrification, elemental gaseous nitrogen is produced from nitrate and nitrite and released

to the atmosphere.

5.4 Two Final sedimentation tanks with total volume (7,718m3)

The activated sludge was settled down in the two circular final sedimentation tanks. The

settled bacteria was withdrawn from the bottom of the tanks and returned back to the aeration

tanks as returned sludge. This recycling of activated sludge was necessary to maintain certain

concentration of activated sludge (around 2-3% SS) with optimal sludge age, however the

excess sludge was pumped to the mechanical thickeners for further treatment in the

anaerobic digester.

aerobic anoxicaerobic/anoxic

9

6. OPERATION OF SLUDGE FACILITIES

6.1 Two Belt thickenersThe excess sludge was withdrawn via pumps to the belt thickeners where polymer was

added. This machine thickened the excess sludge up to 1% to 6% SS concentration. After

thickening it was mixed with the primary thickened sludge to be pumped later on to the

digester.

6.2 Primary thickener tank (548 m3)The settled primary sludge in the primary sedimentation tanks was sent to the primary gravity

thickener circular tank. In this unit, the sludge was thickened to reach 6% which was treated in

the anaerobic digester.

6.3 Anaerobic digester (3650 m3)The thickened primary sludge and thickened excess sludge were treated in the anaerobic

digester; the retention time is 21 days. Temperature and pH were carefully monitored to

maintain optimum conditions for the anaerobic bacteria in the digester (pH= 6.8-7.5), the solid

content was around 3-4%. The biogas produced from the digester normally contained 33% of

CO2 and 66% of methane gas. The sludge was heated up via boiler to maintain mesophilic

conditions in the digester around 36 Co.

Figure (6): Digester tank in Nablus West WWTP with the gas flare

9





digester.











9





digester.











10

6.4 Gas balloon holder (660 m3)Produced CH4 gas from the digester was treated in stone filters to remove the humidity and

then store it in the gas holder.

6.5 Gas flareThe excess gas was burned by the gas flare. It started flaring when the storage in the balloon

reaches up to 90% and stop when it reached 80% of the volume of gas balloon.

6.6 Sludge drying bedsIn emergency cases, the digested sludge was pumped to the drying beds for drying via natural

evaporation. There were 11 beds with total area of 11.5 donum. After drying, the sludge was

transported to the sludge storage yard for disposal into Zahret Al-Fenjan sanitary landfill site

near Jenin.

6.7 Two Belt Filter PressesTwo belt filter presses were used to dewatering the digested sludge coming from the digester

to have solids more than 25%. Special polymers were used to improve the efficiency of these

machines as shown in Figure (7).

Figure (7): Dry solids content after mechanical dewatering.

20%

22%

24%

26%

28%

30%

32%

34%

36%

38%

40%

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Dry

solid

s con

tent

%

Month - 2017

Dry solids content %

Average = 25%

11

6.1 Other facilitiesOther equipment were available for the sustainability of the operation of the WWTP such as

well-equipped lab, stand by generator, spare parts, administration building and workshop.

7. SCADA SYSTEM

The sewage treatment plant was controlled by using Programmable Logic Controller (PLC)

and Supervisory Control and Data Acquisition (SCADA). The PLC’s are located in several

substations (electrical switch rooms) within the wastewater treatment plant.

The wastewater treatment plant was controlled by PLC’s. PLC’s and their support equipment

were computer controlled system that was capable of remote managing of the plant’s

operation. The control was executed from the analogous and digital in-puts / outputs received

from instruments, drives and MCC and from signals received from the SCADA system.

Figure (8): Nablus WWTP SCADA system

11



7. SCADA SYSTEM









11



7. SCADA SYSTEM









12

8. PERFORMANCE OF WWTP

8.1 Influent flowThe performance of WWTP Nablus West during 2017 was analyzed on the basis of the plant

loading which had been monitored regularly. Two aeration treatment tanks were mainly in

operation, the hydraulic treatment capacity of the plant was sufficient and the amount of inflow

in most cases under design capacity. Only extreme weather conditions (heavy rain) led to

capacity problems. The hydraulic and pollutants loading and the actual performance of WWTP

Nablus West from January 2017 to December 2017 were analyzed.

Figure (9) Shows the hydrographs of the daily wastewater flows which were treated in WWTP

Nablus West. It became clear that no strong fluctuation of the daily wastewater flows occurred

during summer time. However, in the winter time the fluctuation was sometimes very high due

to heavy rain events. In such cases, the bypass to Wadi prior to the WWTP had to be used for

plant protection design capacity.

The average daily wastewater flow in the year 2017 was approximately 10883 m³/day . The

amount of incoming wastewater will increase gradually over the next years.

Figure (9): Hydrograph of the daily treated wastewater inflow

7400

9400

11400

13400

15400

17400

19400

21400

23400

25400

27400

01-Ja

n15

-Jan

29-Ja

n12

-Feb

26-F

eb11

-Mar

25-M

ar08

-Apr

22-A

pr06

-May

20-M

ay03

-Jun

17-Ju

n01

-Jul

15-Ju

l29

-Jul

12-A

ug26

-Aug

09-S

ep23

-Sep

07-O

ct21

-Oct

04-N

ov18

-Nov

02-D

ec16

-Dec

30-D

ec

Wes

tew

ater

Inflo

w m

3/da

y

2017

Inflow pattern in 2017 m3/day

Inflow pattern in 2017 m3/day

Inflow pattern in(وفق معدل النقل 7 2017 m3/day)

13

8.2 Cleaning performanceThe current daily wastewater pollution load treated in WWTP Nablus West in terms of COD

and SS were calculated. The average daily COD load was approximately 11,449 kg/d and the

total COD load over the year of 2017 was 4,178,854 kg/year. The COD load at the effluent in

the same period was 154,760 kg/year. The cleaning performance is approximately 96%.

Figure (10): Influent and effluent concentration of COD

The hydraulic and pollutant load of WWTP Nablus West as well as site conditions had an

effect on the performance of the WWTP. The average daily suspended solids inflow was

approximately 4,843 kg/d. The reduction of suspended solids was in average approximately

97%.

0.84

0.86

0.88

0.90

0.92

0.94

0.96

0.98

1.00

0

200

400

600

800

1000

1200

1400

1600

180002

-Jan

02-F

eb

02-M

ar

02-A

pr

02-M

ay

02-Ju

n

02-Ju

l

02-A

ug

02-S

ep

02-O

ct

02-N

ov

02-D

ec

COD

mg/

l

2017

COD Inlet and outlet

COD In mg/l

COD out mg/l

PerformanceEfficency %

وفق معدل النقل 3)COD In mg/l)

وفق معدل النقل 3)COD out

mg/l)

14

Figure (11): Suspended solids of the inlet and outlet of the treatment plant

8.3 Power consumptionOptimization of operation was one of the most important challenges in municipal WWTPs. The

specific power consumption of similar WWTP is about below 0.85 kWh per m³ of treated

wastewater, and below 0.8 kWh of kg COD removed , however in Nablus WWTP is 0.77

kwh/m3 and is 0.73 kg/COD removed respectively. Deviations from this value can be

attributed to the circumstances of daily plant operation.

Figure (12): Monthly values of power consumption per treated m³ of wastewater

0.0050.00

100.00150.00200.00250.00300.00350.00400.00450.00500.00550.00600.00650.00700.00750.00800.00

02-Ja

n

02-F

eb

02-M

ar

02-A

pr

02-M

ay

02-Ju

n

02-Ju

l

02-A

ug

02-S

ep

02-O

ct

02-N

ov

02-D

ec

Susp

ende

d so

lids m

g/l

2017

Inlet and outlet SS in 2017

SS in mg/l

SS out mg/l

وفق معدل النقل 3)SS in mg/l)

وفق معدل النقل 3)SS out mg/l)

0.450.485

0.520.555

0.590.625

0.660.695

0.730.765

0.80.835

0.870.905

0.940.975

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Kwh/

Trea

ted

m3

Month - 2017

Kwh/Treated m3

Average =0.77Kwh/Treated m3

15

8.4 Gas productionPart of produced gas at this stage was used for heating the digester. However, the excess

used by CHP unit (Installed and operated in 2017). The average gas production in the year of

2017 was 2,473 nm3/d.

Figure (13): Gas production of the digester

In 2017 more regular operation of the digester was done and as a result a substantial increase

in biogas occurred. Biogas flowmeters were optimized for reading the flow in normal cubic

meters instead of kilogram. This optimization was done with reference of new installed sensor

of biogas flowmeter in the combined heat and power plant (CHP).

8.5 Desulfurization UnitThe desulphurization unit of biogas is considered as one of the main components of CHP unit,

which ensures sustainability for the operation of the CHP engine. It treats the produced biogas

from anaerobic digester from H2S gas and Siloxane. These gases are dangerous for the

engine and could cause engine failure.

0400800

12001600200024002800320036004000440048005200560060006400

1-Ja

n

22-Ja

n

12-F

eb

5-M

ar

26-M

ar

16-A

pr

7-M

ay

28-M

ay

18-Ju

n

9-Ju

l

30-Ju

l

20-A

ug

10-S

ep

1-O

ct

22-O

ct

12-N

ov

3-De

c

24-D

ec

Gas p

rod

kg/d

ay

2017

Gas production 2017 Average = 2473 kg/d

Gas ProductionNm3/day

16

Figure (14): Nablus West desulfurization unit

8.6 CHP engineOne of the best energy efficiency practices in WWTP’s is utilizing the biogas through CHP

engine. Nablus CHP engine has been put in operation in 18/6/2017. It is burning the treated

biogas which treated in desulfurization unit and produce electrical and thermal power. It was

covered around 60% of the total electrical consumption of Nablus plant. It is expected to cover

around 80% of total electrical demand as more organic load reaches to the Treatment plant

from the nearby villages of Nablus West.

Figure (15): Nablus West CHP engine.

16









16









17

8.7 Nablus CHP electrical figuresThe electrical consumption of the plant and CHP production are monitored on daily.

Figure (16): Electrical consumption of plant with comparison of CHP electrical production

8.8 Online measurement For Nitrogen and suspended solids inthe aeration tanks:

In 2017 an online system for measuring Nitrogen with suspended solids have been installed in

the aeration tanks, four sensors (NH4, NO3) and two (suspended solids) at specific locations in

the aeration tanks which help controlling the nitrification/denitrification process efficiently.

By direct on line measurement of such parameters, an optimization of energy could be

achieved in terms of oxygen supply via the surface aerators which are considered the

prominent energy consumers among other units, as a result a significant reduction of

wastewater energy demand.

A complete connection to SCADA will be optimized in terms of Oxygen supply from surface

aerators.

4775 3013 2998 5371 5160 5196 4613

4509

8328

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

Jun-

17

Jul-1

7

Aug-

17

Sep-

17

Oct

-17

Nov

-17

Dec-

17

kwh/

day

Month

Avg. daily electricalproduction of CHPunit

Avg. daily electricalproduction of CHPunit since start ofoperation untilnow = 4509 kwh/d

Avg. daily electricalconsumption ofNablus plant =8328 kwh/d

18

9. PREVENTIVE MAINTENANCE

From the beginning of the plant operation maintenance works and plans had been conducted

in accordance with the periodic and routine works of machines manuals. These works could

be classified as preventive maintenance. Preventive maintenance was done by Nablus

WWTP staff.

10. STAFF TRAINING AND ORGANIZATION STRUCTURE

Training was essential for the sustainability of the plant. The staff of Nablus plant had been

trained the through KfW in fields of plant operations such as:

Practical training on the CHP maintenance in Jordan. This training was done as (onthe job training) under the umbrella of Consulaqua consulting company. Fourmechanical and electrical technicians were trained in Irbid WWTP.

Theoretical training for the agricultural engineer on reuse issues of treated water andsludge funded by GIZ.

19

11. REUSE PROJECTS

In view of the limited water resources in the West Bank, reuse of treated wastewater

has a great potential to reduce part of these problems and improve crop yield. Designing

wastewater treatment plants for reuse in irrigation could potentially increase agricultural yields,

conserve surfaces water and balance chemical fertilizer demand. Nablus Municipality adopted

the policy to reuse treated wastewater in agriculture. With reference to Ministry of Agriculture

by-law 34-2012 the treated wastewater quality of Nablus WWTP has Grade (A). Four reuse

projects are foreseen in the time being as shown in the following table.

Figure (17): Area’s for reuse of treated WW within the boundary of Nablus WWTP

20

Table 1: Reuse projects by treated wastewater

No

Project Area(Donum) Crops Financing Objective

Quantityof

TWW (m3)\Year

Operatingparty

Cost(Euro)

StatusTaking

Over/foreseen steps

1Reuse InsideWWTPschemeFigures 14,15

40

Avocado-Olive-Apple-Almond-Pomegranate-Pirsamon-Pistachio-Apricot-Walnut-Pecan-Citruss-peach-Alfalfa-Barly-Vetch

EU+GermanGovernmentthroughKfW

EducationalPilot project

35,000 NablusMunicipality

462,000 Jan-2017

2

ReuseoutsideWWTPschemeFigure 16

120 Olive-Almond- Alfalfa

EU+GermanGovernmentthroughKfW

Pilot project 115,000 Deir SharafWUA

1,500,000 July-2018

3CompeteProjectFigure 17

140 Olive-Almond -Pomegranate-Apple-Fig USAID Pilot project 80,000 Deir Sharaf

WUA500,000 June-2017

4Reuseoutside 2800Figure 18

2800 Alfaalfa-Pecan-Walnut -almond-alfalfa-olive

GermanGovernmentthroughKfW

To reuse allTWW in

Agriculture

3,000,000 Deir SharafWUA

10 millions End 2019

21

Figure (18): Reuse inside scheme

.

Figure (19): Sand filtration and ultraviolet disinfection units

21


.


21


.


22

Figure (20): Reuse outside scheme

Figure (21): Reuse outside scheme (USAID)

22



22



23

Figure (22): Reuse outside scheme 2800 donum (KfW)

The growth status of the plants which have been planted inside the Nablus WWTP was

monitored. Table (2) shows the assessment of agricultural experts for the growth status of

the different plants types. Also figure (23) shows the growth of AlfaAlfa in two different

pictures which have been captured within duration of less than one month.

Table 2 : Results from reuse pilot project inside schemeCrop and planting date Growth status

Almond Tree Very GoodPistachio ExcellentPecan ExcellentWalnut (Camel eye) ExcellentPommel GoodLemon GoodOlive Tree ExcellentPomegranate ExcellentApple ExcellentPersimmon goodApricot ExcellentPeach ExcellentAvocado Very Good

23








23








24

Figure (23): A comparison between AlfaAlfa area (before and after)

12. Future Improvements

Implementation of a stone trap at the inlet of WWTP to protect screens

125 KW Pilot Project of PV Solar Panel financed through Nuremberg City-Germany. The Cooperation Agreement was signed in February 2017

Covering primary thickener tank and the sludge storage yard Replacement of thermal isolation sheets for the tank of the anaerobic digestion

13. Problems & Challenges in 2017

Unavailability of spare parts in local market.

Keep the staff of the WWTP.

Sludge Disposal:

1. High Cost of sludge disposal in Zeharet Al-Fenjan at 75 NIS/ton.

2. As per Palestinian standard, it is not allowed to reuse sludge in agriculturedue to high Water content in sludge of 75%

24









Sludge Disposal:



24









Sludge Disposal:



25

14. Staff

Waste Water Treatment Plant Nablus - WestOrganization Structure

Technical AdviserSuleiman Abu Ghosh

Chief OperatorYousef Abu Jaffal

Process EngineerMaintenance

EngineerAdministrativeAgricultural

engineerMohammadHumaidanAnas BarqAssistanceYazan Odeh

Sameh Bitar

Lab TechnicianWWTP SCADAGuardsAgriculture workersRola Abu SlamaAdminestratorRami HasanBara'a Fakr Aldeen

Amer ShanteerZeidan KayedWWTP OperatorZeiad Nasser

Abed al hadi NorieWWTP M.TechniciansRami HasebaMohammad TawashiOffice boy

Khaled MakhzomMohammad AzzamMohammad

HashashAmjad Shanteer

WWTP E.TechniciansAhmad Yaish

26

Suleiman Abu Ghosh

- Technical Adviser

Yousef Abu Jaffal

-Nablus WWTP Chief

Operator

Mohammad Homeidan

-Process Engineer &

Lab Officer in Nablus

WWTP

Anas Barq

- Electrical Engineer

Sameh Bitar

-Administrative Secretary

& Accountant

Rola Abu Slama

-Lab Technician

Amer Shanteer

- WWTP SCADA

Administrator

Yazan Oudeh

-Agricultural engineer

Operators

Khaled Makhzom Amjad Shanteer Rami Hasiba Abdel hadi Norie

26

Suleiman Abu Ghosh

- Technical Adviser

Yousef Abu Jaffal

-Nablus WWTP Chief

Operator

Mohammad Homeidan

-Process Engineer &


WWTP

Anas Barq


Sameh Bitar


& Accountant

Rola Abu Slama

-Lab Technician

Amer Shanteer

- WWTP SCADA

Administrator

Yazan Oudeh


Operators


26

Suleiman Abu Ghosh

- Technical Adviser

Yousef Abu Jaffal

-Nablus WWTP Chief

Operator

Mohammad Homeidan

-Process Engineer &


WWTP

Anas Barq


Sameh Bitar


& Accountant

Rola Abu Slama

-Lab Technician

Amer Shanteer

- WWTP SCADA

Administrator

Yazan Oudeh


Operators


27

Electro mechanic Technicians

Mohammad Tawashi Mohammad Azzam Ahmad Yaish

Labour office boy

Mohammad Antar Mohammad Hashash

Agriculture

Bara’a Fakrldeen

Guards

Rami Hasan Zeidan Kayed Zeiad Nasser

28

15. Annexes

29

150.0200.0250.0300.0350.0400.0450.0500.0550.0600.0

12:0

0am

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0am

12:0

0am

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0pm

daily

flow

pat

tern

Time

Daily Pattern Flow 11/1/2017

100.0150.0200.0250.0300.0350.0400.0450.0500.0550.0600.0

12:0

0…

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0…

12:0

0…

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0…Flow

m3/

hr

Time

Flow pattern 25/7/2017

300.0350.0400.0450.0500.0550.0600.0650.0700.0750.0800.0

12:0

0a…

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0a…

12:0

0a…

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0…

daily

flow

pat

tern

Time


100.0150.0200.0250.0300.0350.0400.0450.0500.0550.0600.0650.0

12:0

…

2:00

…

4:00

…

6:00

…

8:00

…

10:0

…

12:0

…

2:00

…

4:00

…

6:00

…

8:00

…

10:0

…Flow

m3/

hr

Time


100.0150.0200.0250.0300.0350.0400.0450.0500.0550.0600.0

12:0

0am

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0am

12:0

0am

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0p…

daily

flow

pat

tern

Time


100.0150.0200.0250.0300.0350.0400.0450.0500.0550.0600.0

12:0

0a…

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0a…

12:0

0a…

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0p…Fl

ow m

3/hr

Time


150.0200.0250.0300.0350.0400.0450.0500.0550.0600.0

12:0

0am

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0am

12:0

0am

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0pmda

ily fl

ow p

atte

rn

Time


070140210280350420490560630700

12:0

0am

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0am

12:0

0am

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0pm

Flow

m3/

hr

Time


100170240310380450520590660730

12:0

0…

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0…

12:0

0…

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0…Flow

m3/

hr

Time


100.0150.0200.0250.0300.0350.0400.0450.0500.0550.0600.0

12:0

0…

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0…

12:0

0…

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0…Flow

m3/

hr

Time


100.0200.0300.0400.0500.0600.0700.0800.0900.0

12:0

0am

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0am

12:0

0am

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0p…

Flow

m3/

hr

Time


100.0150.0200.0250.0300.0350.0400.0450.0500.0550.0

12:0

0a…

2:00

am

4:00

am

6:00

am

8:00

am

10:0

0a…

12:0

0a…

2:00

pm

4:00

pm

6:00

pm

8:00

pm

10:0

0p…Flow

m3/

hr

Time


Annex 01: Daily pattern readings of daily inlet flow

30

Annex 02: Graphs

Graph 1: Average wastewater effluent

Graph 2: Average treated wastewater effluent

370.0390.0410.0430.0450.0470.0490.0510.0530.0550.0570.0590.0610.0

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Vens

uri r

eadi

ngs m

3/hr

Month - 2017

Venturi readingsm3/hr

Average = 453 m3/hr

9,0009,4009,800

10,20010,60011,00011,40011,80012,20012,60013,00013,40013,80014,20014,60015,000

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Out

flow

m3/

day

Month - 2017

Outflow m3/day

Average = 10883m3/day

31

Graph 3: Monthly dissolved oxygen concentration pattern in the aeration tank no. (1)

Graph 4: Monthly dissolved oxygen concentration pattern in tank no. (2)

1.35

1.425

1.5

1.575

1.65

1.725

1.8

1.875

1.95

2.025

2.1

2.175

2.25

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Aver

age

DO a

t AT

1m

g/l

Month - 2017

Average DO at AT 1mg/l

Average = 1.73 mg/l

1.35

1.4

1.45

1.5

1.55

1.6

1.65

1.7

1.75

1.8

1.85

1.9

1.95

2

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Aver

age

DO a

t AT

2m

g/l

Month - 2017

Average DO at AT 2mg/l

Average = 1.7 mg/l

32

Graph 5: The COD concentration in the influent of WWTP

Graph 6: The COD concentration in the effluent of the treated waste water

625675725775825875925975

102510751125117512251275

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

COD

inle

t mg/

l

Month - 2017

COD inlet mg/l

Average = 1052 mg/l

Design =1100 mg/l

30.0035.0040.0045.0050.0055.0060.0065.0070.0075.0080.0085.0090.0095.00

100.00105.00

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

COD

Out

mg/

l

Month - 2017

COD out mg/l

Average year = 39 mg/l

Design = 100 mg/l

33

Graph 7: The correlation between CODout and BOD5eff

Graph 8: The BOD5 concentration in the effluent of the treated wastewater

y = 4.9985xR² = 0.987

25

30

35

40

45

50

55

60

65

70

75

5 7 9 11 13 15 17 19

COD

out m

g/l

BOD 5 out mg/l

6.007.008.009.00

10.0011.0012.0013.0014.0015.0016.0017.0018.0019.0020.0021.00

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

BOD

outle

t mg/

l

Month - 2017

BOD outlet mg/l

Average = 7.7 mg/l

Design = 20 mg/l

34

Graph 9: TSS concentration of the treated wastewater (TSS)

Graph 10: Total Nitrogen for influent and effluent (TN)

5.007.009.00

11.0013.0015.0017.0019.0021.0023.0025.0027.0029.0031.00

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

TSS

outle

t mg/

l

Month - 2017

TSS out mg/l

Average = 13 mg/l

Design = 30 mg/l

0

10

20

30

40

50

60

70

80

90

100

110

120

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Tota

l Nitr

ogen

mg/

l

Month - 2017

Total Nitrogen outlet mg/lAverage Total Nitrogen 13.3 outlet mg/lTotal Nitrogen inlet mg/lAverage Total Nitrogen 95 inlet mg/l

35

Graph 11: The average produced quantities of biogas

Graph 12: Average pH of the inlet wastewater

1500

1700

1900

2100

2300

2500

2700

2900

3100

3300

3500

3700

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Biog

as q

uant

ity N

m3/

day

Month - 2017

Biogas quantity Nm3/day

Average Biogas quantity = 2473 Nm3/day

7.557.585

7.627.655

7.697.725

7.767.795

7.837.865

7.97.935

7.978.005

8.048.075

8.118.145

8.188.215

8.258.285

8.328.355

8.398.425

8.468.495

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

pH

Month - 2017

PH Average = 8

36

Graph 13: Mixed liquor suspended solids concentration (MLSS) in aeration tanks

Graph 14: Conductivity of the inlet flow

2.8

3

3.2

3.4

3.6

3.8

4

4.2

4.4

4.6

4.8

5

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

MLS

S

Month - 2017

MLSS

Average= 3.77 g/l

12001230126012901320135013801410144014701500153015601590162016501680

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

CON

D

Month - 2017

COND Average = 1513 µS/cm

37

Graph 15: Total dissolved solids in the effluent

Graph 16: Average monthly treated wastewater and power consumption

600620640660680700720740760780800820840860880900920940960

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

TDS

Month - 2017

190,000205,000220,000235,000250,000265,000280,000295,000310,000325,000340,000355,000370,000385,000400,000

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

ctrea

ted

wat

er a

nd E

lect

rical

con

sum

ptio

n

month - 2017

Treated Water quantity m3

Avg treated water =330294 m3

Electrical consumption kWh

Avg Electrical consumption =249839 kWh

38

Graph 17: Power requirement kWh/kg COD treated

Graph 18: Power requirement kWh/m3 treated

0.590.610.630.650.670.690.710.730.750.770.790.810.830.850.870.89

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Kwh/

Kg C

OD

rem

oved

Month - 2017

Kwh/Kg COD removed

Average =0.73 Kwh/KgCOD removed

0.450.485

0.520.555

0.590.625

0.660.695

0.730.765

0.80.835

0.870.905

0.940.975

Jan

Feb

Mar Ap

r

May Jun Jul

Aug

Sep

Oct

Nov De

c

Kwh/

Trea

ted

m3

Month - 2017

Kwh/Treated m3

Average =0.77Kwh/Treated m3

39

Graph 19: Expenditures versus collection

Graph 20: Expenditures breakdown 2017

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000

3,500,000

4,000,000

2014

2015

2016

2017

NIS

Year

Total income

Totalexpenses

Indirectexpenses

Electricity43%

Salaries andwages19%

Otherdepartmentsparticipation

14%

Transportationand land filling

8%

Chemicalsconsumables

6%

Insurance5%

Fuels2% O&M

1% Vehicles1%

Administrativeexpenses

1%

Electricity

Salaries and wages

Other departmentsparticipationTransportation and landfillingChemicals consumables

Insurance

Fuels

O&M

Vehicles

Administrative expenses

40

Annex 03: Performance summary

ParametersDesign

value 2020

Treatmentefficiency

% Average

Month - 2017

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Average inlet flowm3/d 14000 ----- 10883 12657 14413 11112 10615 9965 9812 9223 9523 10500 10352 10660 11760

Inlet COD mg/L 1100 ----- 1052 864 732 957 1035 981 1269 1094 1169 1000 1232 1203 1088

Outlet COD mg/L 100 96% 39 45 46 37 36 38 41 36 39 36 38 39 33

Outlet BOD5 mg/L 20 99% 7.7 9 9 7 7 8 8 7 8 7 8 8 6.5

Inlet BOD5 mg/L 550 526 432 366 478 517 490 634 547 584 500 615 601 544

Sludge age (days) 13.7 ----- 18 19 17 16 14.5 15.4 20 17.5 18 21 20 20 20.2

MLSS g/L 3 ----- 3.77 3 3.66 3.53 3.5 3.3 4.95 4.3 3.6 3.5 3.6 3.7 4.55

TSS inlet mg/L 500 474 355 300 377 304 430 602 522 562 534 546 629 522

TSS outlet mg/L 30 97% 13 22 21 15 18 15 13 12 6 10 5 9 12TN out 30 13.3 45 18 6 7 8 9 6.6 6.3 13 12 12.5 16.5

Annex 04: Power consumption

2017DecNovOctSepAugJulJunMayAprMarFebJanAvgMonth

364,555319,719320,914315,040295,204285,900294,351308,906318,454344,468403,560392,381330,288Treated

wastewaterquantity m3

101,511109,994102,987102,002178,615180,512202,106252,791242,157233,542193,860214,198

249,839

Totalelectrical

consumptionkWhr

142,995161,101159,981166,50992,94193,41066,850-----

CHPelectrical

productionkWhr

0.670.850.820.850.920.960.910.820.760.680.480.550.76kWhr per m3

41

Annex 05: Additional lab Tests in WWTP Lab2017

AverageValuesTest / DecNovOctSepAugJulJunMayAprMarFebJan33.0039.0038.0036.0039.0036.0041.0038.0036.0037.0046.0045.0039Average

COD outmg/l 46.0060.0054.0047.0057.0039.0064.0060.0044.0059.0085.0069.0057.0Max

18.0031.0030.0032.0029.0033.0030.0029.0030.0027.0029.0024.0028.5Min

6.508.008.007.008.007.008.008.007.007.009.009.007.7AverageBOD out

mg/l 9.0012.0011.009.4011.007.8013.0012.009.0012.0017.0014.0011.4Max

3.606.006.006.406.006.606.006.006.005.006.005.005.7Min

0.30----0.80--0.900.450.500.000.150.000.250.4AverageNH4-N out

mg/l 0.40----0.80--0.900.900.500.000.300.000.400.5Max

0.20----0.80--0.900.000.500.000.000.000.100.3Min

6.557.508.9011.453.604.186.106.103.803.302.3032.908.1AverageNO3-N out

mg/l 9.308.7015.4013.404.505.306.906.103.803.302.3043.0010.2Max

3.806.405.006.602.203.405.306.103.803.302.3022.805.9Min

16.5012.5012.0013.006.306.609.008.007.006.0018.0045.0013.3Average

TN out mg/l 18.0018.0019.0017.009.008.0011.008.007.006.0018.0050.0015.8Max

15.007.006.008.003.005.007.008.007.006.0018.0040.0010.8Min

1.302.402.303.304.404.652.642.692.140.851.903.932.7AveragePO4-P out

mg/l 1.702.703.703.444.806.542.642.692.140.851.903.933.1Max

1.101.901.503.144.003.482.642.692.140.851.903.932.4Min

12.009.005.0010.006.0012.0013.0015.0018.0015.0021.0022.0013Average

TSS out mg/l 30.0020.0010.0032.0012.0030.0032.0032.0027.0025.0046.0040.0028.0Max

2.002.002.002.002.002.002.002.0010.006.004.002.003.2Min

4.554.463.603.503.604.304.953.823.453.563.663.003.77Average

MLSS mg/l 5.205.004.504.404.224.906.383.644.205.002.383.404.4Max

3.803.732.903.003.053.604.453.002.753.133.192.503.3Min

42

Annex 06: External laboratory analysisQuality of the sludge (NWWTP) with comparison of standard (59/2015)

Elements

Sampled on Obligatory Method of Testing

05/09/2016 15/1/2017 Tech.Ins59/2015

Cd (ppm) 0.27 0.48 20 Birzeit Lab, ICP instrument

Cu (ppm) 71.63 123.9 1000 Birzeit Lab, ICP instrument

Ni (ppm) 6.21 11.2 300 Birzeit Lab, ICP instrument

Pb (ppm) 7.5 13.1 750 Birzeit Lab, ICP instrument

Zn (ppm) 243.46 360.3 2500 Birzeit Lab, ICP instrument

Cr (ppm) 6.93 13.4 400 Birzeit Lab, ICP instrument

As (ppm) Not Detected 0.29 N.A Birzeit Lab, ICP instrument

Mo (ppm) 1.21 0.40 N.A Birzeit Lab, ICP instrument

Se (ppm) Not Detected Not Detected N.A Birzeit Lab, ICP instrument

Hg (ppm) 0.58 0.47 16 Birzeit Lab, DMA-80 instrumentPhosphorus(ppm) 3299 6771 N.A Birzeit Lab, ICP instrument

FC (cfu/g) 4300 - N.A Birzeit Lab, iso instrument

Salmonella (cu/g) Nil Nil N.A Birzeit Lab, iso instrumentConductivityµs/cm - 1180 Birzeit Lab, iso instrument

43

Annex 07: Quality of tertiary treatment systemsQuality of the treated water (NWWTP) with comparison of reuse standard (34/2014)

Maximum limits for chemicaland biological properties

KfW reuseprojectsampled14\8\2017

USAIDreuseprojectsampled18/5/2017

Quality of Tech. Spec 34-2014

HighQuality(A)

GoodQuality(B)

MediumQuality(C)

LowQuality(D)

(BOD5) mg/l 14.8 5 20 20 20 60suspended solids (TSS) mg/l <2 6 30 30 30 90FC (Colony/100ml) Nill 2 200 1000 1000 1000(COD) mg/l 45.3 25 50 50 100 150Dissolved Solids (TDS) mg/l 975 820 1200 1500 1500 1500pH 7.74 7.54 6--9 6—9 6--9 6--9Fat, Oil, & Grease mg/l 4 4 5 5 5 5Phenol mg/l - BDL 0.002 0.002 0.002 0.002MBAS - <10 15 15 15 25NO3-N ppm BDL 2.46 20 20 30 40NH4-N mg/l 1.3 1.4 5 5 10 15Total nitrogen 6.6 11.06 40 40 40 40CL ppm 260.82 239.38 400 400 400 400SO4 ppm 88.73 97.40 300 300 300 300Na ppm 177 197 200 200 200 200Mg ppm 26.2 21.9 60 60 60 60Ca ppm 74.7 82.28 300 300 300 300SAR 5.37 5.33 5.85 5.85 5.85 5.85PO4-P ppm 16.3 11.93 30 30 30 30Al ppm 0.10 0.05 5 5 5 5Cu ppm 0.035 0.013 0.2 0.2 0.2 0.2Fe ppm 0.113 0.07 5 5 5 5Mn ppm BDL 0.04 0.2 0.2 0.2 0.2Ni ppm 0.054 BDL 0.2 0.2 0.2 0.2Pb ppm 0.03 0.03 0.2 0.2 0.2 0.2Se ppm BDL BDL 0.02 0.02 0.02 0.02Cd ppm 0.01 BDL 0.01 0.01 0.01 0.01Zn ppm 0.08 0.16 2 2 2 2Cn ppm BDL BDL 0.05 0.05 0.05 0.05Cr ppm <0.04 BDL 0.1 0.1 0.1 0.1Hg ppm <0.05 ppb 0.44 ppb 0.001 0.001 0.001 0.001Co ppm BDL BDL 0.05 0.05 0.05 0.05B ppm 0.15 0.065 0.7 0.7 0.7 0.7Ag ppm BDL 1E. coli (Colony/100ml) Absent Absent 100 1000 1000 1000Nematodes (eggs/L) Absent Absent 1>= 1>= 1>= 1>=

BDL = below detection limit

44

16. Photos

454545

464646

47

484848

Date post:	10-Jun-2020
Category:	Documents
Upload:	others
View:	4 times
Download:	0 times

Wastewater Treatment Plant -...

Documents