HINDALCO INDUSTRIES LIMITED (UNIT: BIRLA COPPER) PROPOSED EXPANSION PROJECT OF CONTINUOUS CAST COPPER ROD Eco Chem Sales & Services 173 | Page To identify any significant adverse transformation in environmental condition in order to plan additional mitigation measures. To ensure that new parameters other than those identified in the impact assessment study, do not become critical on account of commissioning of the project. 5.2 ENVIRONMENTAL ASPECTS TO BE MONITORED Since the project is an expansion project, the unit has a well-established environment and safety department which undertakes measures for environmental protection and mitigation of environmental impacts. Several measures have been proposed in the environmental mitigation measures for minimizing the adverse impacts of the proposed expansion. These shall be implemented as per the proposal and monitored regularly to ensure compliance with environmental regulations and also to maintain healthy environmental conditions within & around the unit. A major part of the sampling and measurement activity shall be concerned with long term monitoring aimed at providing an early warning of any undesirable changes or trends in the natural environment that could be associated with the plant activity. This is essential to determine whether the changes are in response to a cycle of climatic conditions or are due to impacts of the plant activities. In particular, a monitoring strategy shall ensure that all environmental resources which may be subject to contamination are kept under review and hence monitoring of the individual elements of the environment shall be done. During the operation phase, Environmental Management Cell (EMC) shall undertake all the monitoring work to ensure the effectiveness of environmental mitigation measures. The suggestions given in the Environmental Monitoring Programme shall be implemented by the EMC by following an implementation schedule. In case of any alarming variation in the ground level concentration of ambient air, stack emissions, work zone air and noise levels, performance of effluent treatment facilities etc. and the same shall be discussed in the EMD. The variance from norms shall be reported for immediate rectification action at higher management level. In addition to the monitoring program, the following shall also be done to further ensure the effectiveness of mitigation measures: Internal environmental audits shall be carried out to check the compliance with standards / applicable norms by in-house experts. Promotion of Energy Optimization Technology including periodic energy audits. The environmental aspects to be monitored for proper implementation and effectiveness of various mitigation measures envisaged / adopted during the design and commissioning stage of the proposed expansion plan are described hereunder:
To identify any significant adverse transformation in environmental condition in order to plan
additional mitigation measures.
To ensure that new parameters other than those identified in the impact assessment study, do not become critical on account of commissioning of the project.
5.2 ENVIRONMENTAL ASPECTS TO BE MONITORED
Since the project is an expansion project, the unit has a well-established environment and safety department which undertakes measures for environmental protection and mitigation of environmental impacts. Several measures have been proposed in the environmental mitigation measures for minimizing the adverse impacts of the proposed expansion. These shall be implemented as per the proposal and monitored regularly to ensure compliance with environmental regulations and also to maintain healthy environmental conditions within & around the unit.
A major part of the sampling and measurement activity shall be concerned with long term monitoring aimed at providing an early warning of any undesirable changes or trends in the natural environment that could be associated with the plant activity. This is essential to determine whether the changes are in response to a cycle of climatic conditions or are due to impacts of the plant activities. In particular, a monitoring strategy shall ensure that all environmental resources which may be subject to contamination are kept under review and hence monitoring of the individual elements of the environment shall be done. During the operation phase, Environmental Management Cell (EMC) shall undertake all the monitoring work to ensure the effectiveness of environmental mitigation measures. The suggestions given in the Environmental Monitoring Programme shall be implemented by the EMC by following an implementation schedule.
In case of any alarming variation in the ground level concentration of ambient air, stack emissions, work zone air and noise levels, performance of effluent treatment facilities etc. and the same shall be discussed in the EMD. The variance from norms shall be reported for immediate rectification action at higher management level. In addition to the monitoring program, the following shall also be done to further ensure the effectiveness of mitigation measures:
Internal environmental audits shall be carried out to check the compliance with standards / applicable norms by in-house experts.
Promotion of Energy Optimization Technology including periodic energy audits.
The environmental aspects to be monitored for proper implementation and effectiveness of various mitigation measures envisaged / adopted during the design and commissioning stage of the proposed expansion plan are described hereunder:
Monitoring of ambient air quality within the plant premises is already being carried out. The fuel proposed to be used in the proposed furnace will be LNG. Hence, no major emissions will be generated due to the proposed expansion project. However, monitoring is/shall be carried out for Respirable Suspended Particulate Matter (RSPM) & Suspended Particulate Matter (SPM), Sulphur Dioxide (SO2) and Oxides of Nitrogen (NOx) for the compliance of prescribed limits of CPCB/GPCB.
Online Ambient Air Monitoring Station
5.3.2 Plant Stack Emissions Monitoring
The unit already carries out periodical monitoring for existing stacks attached to the furnaces. Same practice shall be carried out after the proposed expansion. PM, SO2 & NOx in stacks is carried out to assess the performance of pollution control facilities installed for the unit. In case emissions are found to exceed the
For the proposed expansion, along with the performance test of main plant, equipment performance test & calibration of pollution control equipment shall be made on a regular basis. A detailed maintenance schedule shall be drawn for all pollution control systems. The maintenance shall be done strictly as per the schedule.
Source of water is GIDC water Supply. Industrial water requirement of existing CCR plant is 630 KLD and for the proposed CCR plant will be 400 KL/Day. Domestic water requirement of existing plant is 5 KLD and for proposed plant additional 4 KLD water will be required for proposed expansion.
Generated 3.5 KLD additional sewage will also be treated in existing Sewage Treatment Plant (STP) of 500 KLD capacity. Treated sewage is/will be reused in process.
There will be no wastewater generation on daily basis from the manufacturing of CCR but the only negligible generation of wastewater from the cleaning of coolant water tank of rolling mill intermittently. This will be about 1000 liters in a six month (@0.006 KL/day), which will be treated in existing ETP. Other wastewater will be generated from cooling tower blow down i.e. 8 KLD for proposed expansion, which will be reuse in slag granulation in smelter and lime slurry preparation in ETP.
5.3.4 Noise Quality
Noise monitoring is already carried out in existing premises by third party. Noise levels shall be measured at the source of generation. However, in case of high noise generating equipment which are not frequented by
provided with personnel protective equipment like ear plugs/ear muffs before entering such areas.
After the proposed expansion, the noise level monitoring shall be carried out once in a month at selected locations. Data obtained after noise monitoring shall be carefully evaluated to identify changes, if any. Gross deviation from the baseline will require a thorough review of operations at the proposed expansion project to identify the reasons of high noise generation.
No Solid/Hazardous waste is/shall be generated from existing/proposed expansion project.
5.3.6 Green Belt Development
Unit has already maintained 106 hectors well-developed greenbelt area within the factory premises and township. Additional 1500 m2 of greenbelt area shall be developed by the proponent. The following plan has been made & implemented for existing greenbelt and same shall be followed after proposed expansion.
Annual plans for tree plantation with specific number of trees to be planted shall be made. The fulfilment of the plan shall be monitored by the EMC every six months.
A plan for post plantation care will be reviewed in the monthly meetings. Any abnormal death rate of planted trees shall be investigated and acted upon immediately.
Watering of the plants, manuring, weeding, hoeing will be carried out for corresponding years.
5.3.7 House Keeping
The EMC cell is/will keep a very close monitoring of the housekeeping activities and organizing regular meetings of joint forum at the shop level (monthly), zonal level (once in two months) and apex level (quarterly).
5.3.8 Occupational Health and Safety
Unit has already prepared key safety measures implemented in the existing plant and same shall be implemented for the proposed expansion. Routine medical examination of the personnel is being carried out. A systematic program for medical check-up at regular intervals is already carried out and same shall be followed for newly employed workers to ascertain any changes in health conditions due to the working conditions.
5.3 MONITORING METHODOLOGIES
Monitoring of environmental attributes shall be collected as per the guidelines provided by MoEFCC/CPCB/GPCB. The methods followed shall be recommended/standard method approved/recommended by MoEFCC/CPCB.
Table No 5.2: Method Adopted for Environmental Sampling/analysis
Attributes METHOD
Sampling / Preservation Analysis
A. Air Environment
1. Micro Meteorological Data
2. Ambient Air Quality
Mechanical/automatic
1. Mechanical or automatic weather station/ Meteorological Department
2. Samplers (Designed as per USEPA) to collect PM2.5, PM10 and the gaseous samples
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Standard methods such as IS: 5182 & CPCB guideline, ASTM etc.
B. Noise Instrument : Noise level meter As per CPCB guidelines
Expansion in the existing plant will improve the infrastructure & economic conditions of the locality thereby, uplifting the social development of the same. It is suggested that the plant management should have structured interactions with the community to disseminate the measures taken by the industry and also to elicit suggestions for overall improvement for the development of the area.
5.4 MONITORING PARAMETERS & FREQUENCY
The monitoring parameters and frequency of monitoring shall be as following:
Table 5.1: Post Project Environmental Monitoring Programme
No. Item Parameters Frequency
1 Ambient Air quality PM2.5, PM10, SO2, NOx, Monthly
2 Stationary Emissions from flue gas stacks
PM, SO2, NOx Monthly
3 Noise Equivalent noise level - dB (A)
(min. 10 locations)
Monthly
4 Greenbelt Number of plantation (Units), Number of Survived Plants/Trees, Number of Poor Plant/Trees
Yearly
5 Environmental Audit As per Directions of Hon. High Court, Gujarat
Yearly
6 Renewal of Consents and Authorization
Renewing consent to operate under applicable acts
90 days before expiry of validity
7 Compliance of EC conditions
Submission of 6 monthly compliance reports.
Half yearly
8 Water cess Filing annual returns for cess incurred on water consumption.
Yearly by 30th Sept
9 Medical surveillance The health status of all the workers in Yearly for all
program respect of occupational health hazards. employees and half yearly who are working in hazards areas.
5.5 PROGRESS MONITORING AND REPORTING ARRANGEMENTS
The rational for a reporting system is based on accountability, to ensure that the measures proposed as a part of the Environmental Monitoring Plan get implemented in the proposed expansion project. The monitoring and evaluation of the proposed management measures are critical activities in implementation of the proposed expansion. Monitoring involves periodic checking to ascertain whether activities are going according to the plans. It provides the necessary feedback for the project management to keep the program on schedule.
Table 5.3: Reporting System for Environmental Monitoring Plan
Sr. No. Details Indicators Stage Responsibility
A. Pre-Construction Stage: Environmental Management Indicators and Monitoring Plan
1 Suitable location for dumping of construction wastes has to be identified.
Dumping locations Pre-construction
Construction Contractor
B. Construction Stage: Environmental Condition Indicators and Monitoring Plan
2 The parameters to be monitored as per frequency, duration & locations of monitoring specified in the Environmental Monitoring Programme
Air quality Construction Project Dept. through approved monitoring agency
C. Operation Stage: Management & Operational Performance Indicators
1 Solid waste generation, utilization and dumping
As per guidelines of statutory bodies
Operation Concerned Plant Units / EMD
2 Hazardous waste dumping, storage and disposal as specified by statutory authorities.
As per the notifications / guidelines specified by statutory authorities.
Operation -Do-
3 Stack Emissions from Process & de-dusting stacks
All parameters as specified for stacks of different units by Statutory Authorities
Operation Concerned Plant Units / EMD
4 Meteorology, Ambient air quality and Noise levels.
All parameters as specified by Statutory Authorities
Operation -Do-
5.6 LABORATORY FACILITIES
Hindalco Industries Limited (Unit: Birla Copper) has already set up permanent and efficient laboratory with adequate manpower and facilities for the effective implementation of environmental control measures. basis. PM2.5, PM10, SO2, NOX, Cl2, HCl etc samples are taken from ambient air and analyzed in their laboratory on daily basis. Analysis of PM, SO2,SO3, Acid mist, Ammonia and fluoride for stack sample is carried out as per their pre scheduled basis for various stacks emission points. COD, Acidity
and heavy metal analysis is also carried out on daily basis for smooth operation of ETP. BOD, TSS and residual chlorine is also measured on daily basis for STP. The current practice will be continued after proposed expansion.
Birla Copper also submit the monthly statics (based on daily results) of ambient air quality and stack and effluent analysis report to state pollution control Board.
5.7 DOCUMENTATION & RECORDS
The environmental department in respect of operation of pollution control facility is/will maintain the following records:
Instruction manual for operation and maintenance
Log sheet for self-monitoring of pollution control equipment and technology
Manual for monitoring of ambient conditions
Instruction manual for monitoring of water and gaseous parameters discharged from the factory and also for various parameters of pollution control facilities.
Stationary records as per the Environmental Acts.
Monthly and annual progress reports.
5.8 BUDGETARY PROVISION FOR EMS
On regular basis, environment management cell shall inspect the necessity & availability of the materials, technologies, services & maintenance works. The cell shall make appropriate budget for this purpose. Regular record review for change in financial requirement of environment management shall be done and appropriate budgetary provisions shall be made. With other budget, budget for Environmental Management System shall also be prepared and revised regularly as per the requirement.
Hindalco Industries Limited (Unit: Birla Copper) proposes to expand their capacity by increase in the capacity of Continuous Cast Copper Rod from 2,40,000 TPA to 4,84,000 TPA by setting up of a new Continuous Cast Copper Rod plant of 2,44,000 TPA capacity in the existing Copper Smelter Complex. Hindalco Industries Limited envisages to use a state of art technology, adopting modernized machineries/equipment and novel process technologies, with waste minimization techniques at a capital investment of Rs. 240 crores.
7.2 EMPLOYMENT POTENTIAL
The proponent has planned to recruit around 50 numbers of skilled, semi-skilled and unskilled manpower according to the requirement cited in the project planning. The direct & indirect employment potential of the project would be significantly beneficial for the area. The planned employment will have significant benefits after the commissioning of the proposed project.
The following measures shall be taken to provide basic facilities to the workers.
All the workers will be hired from local population.
All the basic facilities such as tap water, sanitation, drinking water, lunch space will be provided.
First aid box, free medicines, etc. will be available within the project site.
Adequate PPEs will be provided to all workmen during construction as well as operational phase.
7.2.1 SKILLED AND SEMI-SKILLED
Skilled and Semi-skilled employment potential in terms of direct and indirect employment of the area will be non-marginal which will usually remain widespread across a long region. As the proposed project takes place, indirect employment is likely to grow further during the construction as well as operation phase of the project. The project is expected to generate substantial indirect employment in other sectors such as hospitality sector, food & catering, transportation services, other service units, etc. Overall assessment of the employment and income effects indicates that the project has strong positive direct as well as indirect impacts on employment and income generation of the area.
The proposed project has employment generation potential by way of recruiting local unskilled people also directly for different activities of the project, specifically at the construction phase and some of the temporary works during the operation phase as well. It is expected that substantial portion of the investment in this project will trickle down to the local people in the form of employment and income generation.
7.3 CSR ACTIVITIES
7.3.1 PAST CSR ACTIVITIES
The proponent has been actively engaged in social welfare activities from the past many years. Summary of the social welfare activities carried out by the proponent from April 2015 to March 2016 is given below and the cost of which was Rs. 260 lakhs.
Sr. No Name of the Program Total beneficiaries
1 Education
A. Transportation to girls students of Lakhigam, Luvara for higher study
B. Support to P J Chheda High School by paying salary of two teachers of science stream (11th & 12th standard Guj. Med)
C. Educational Materials distribution among 81 Govt. Primary Schools / Secondary school of entire Vagara tehsil, covering 69 villages + 2 villages of Bharuch tehsil (Note Books, Math Practice, School Bag, Slates, etc)
D. Sports Competition organized jointly (CRC Level)
D. District Administration of Bharuch, Dr. Vikrant Pandey, IAS, District Collector, Bharuch recognised M/s. Hindalco Ind. Ltd, Unit: Birla Copper by issuing appreciation certificate in recognition of support for dedication and participation to worthy cause of cleanliness drive
on May 24,2015 at Bharuch town. The event is registered in Limca book of records.
E. Mass marriage at Bhutnath Mahadev Temple
F. Gym inauguration at Dahej village
G. 50 nos. tarpaulin provided to earthquake affected people of Nepal
H. Bus provided for AMBAJI PAD YATRI
I. CSR Audit on Sustainability by KPMG
J. Food packets given to flood affected people of Banaskantha district
K. Celebration of International Yoga Day, Republic
L. Values promotion camps/ Awareness drives on knowledge attitude & practice (Aditya Birla Cleanathon , Fire & Safety, Environment, ABHYAM)
M. Organising local festivals and cultural prog., (Orphan children get together) Mahashivratri at Bhutnath Mahadev Temple
N. Tree Plantation with Tree Guard Impact Assessment Survey
The company also proposes to carry out CSR activities for the welfare of local community. Under this, the company will propose a detailed CSR Plan. Under this plan, the proponent has allocated a budget of Rs. 6.22 crores within the five year. Activities under the following areas have been identified and shall be carried out:
Education
Vocational and technical training
Buildings and Civil structures ( Construction of Primary & Secondary schools at Dahej )
The Environmental Management Plan (EMP) constitutes an important part of the EIA report. The main purpose of EMP is to minimize the identified potential environmental impacts to be generated from the proposed expansion project and to mitigate the consequences. HIL, on basis of the impacts identified, sets targets to reduce the negative impacts, plans and decides action plan to achieve the target effectively and efficiently. EMP ensures an effective implementation methodology and alternatives for mitigation measures planned/recommended to reduce or eliminate the adverse impacts to maximum possible extent during the operation of the proposed expansion project.
8.1 COMPONENTS OF AN EMS
In order to develop an EMS, an organization has to identify the impacts, set targets to reduce the negative impacts, plan and decide the targets as well as set proper and appropriate steps to achieve the targets effectively and efficiently.
A. ENVIRONMENTAL IMPACT IDENTIFICATION:
Any expansion work, either small or large, has some environmental implications. The environmental implications may be beneficial or adverse, but the main objective of impact identification is to specify areas that are likely to be affected by the expansion project. It refers to identification and documentation of the actual and potential environmental impacts of an organization's operational activities to be undertaken.
This work has been done as a part of the EIA study which is already explained in earlier chapters. Further the impact identification shall be recorded and reported with the expansion activities of the proposed project.
B. OBJECTIVES AND TARGETS:
To comply with all the conditions of Approved ToRs/ regulations/ applicable laws stipulated by MoEFCC or Central/ State Pollution Control Boards.
To exercise all necessary controls with respect to management of liquid/gaseous pollutants. To remediate wastewater and air emissions posing adverse impacts on the environment by installing
adequate pollution control technology and equipment.
To install adequate APC along with stack monitoring facility at all gaseous emission points to ensure emissions within prescribed limits.
To plan environmental conservation and protection activities for the purpose of achieving environmental standards and to improve methods of environmental management practices.
To improve working environment for employees by implementing mitigation/control measures for Occupational Health & Safety and thereby improving workplace environment.
To make budgetary provision and allocate funds for environmental management system and to ensure timely revision of the same.
To implement and ensure effective implementation of Planned Mitigation including R&D programme for innovative technologies for better environment, resource conservation/recovery/recycling/reuse especially to promote waste utilization and wastewater recycling/reuse.
To encourage and inspire employees and contractor for highest performance and attentive response for environmental conservation, protection and improvement.
Growth and development of the company.
8.2 SUMMARY OF ANTICIPATED ENVIRONMENTAL IMPACTS
A detailed study for the identification & prediction of anticipated environmental impacts of the proposed expansion was carried out and the outcomes of the study are described in earlier Chapter-4. The major impacts which require mitigation measures to protect the environmental health are further considered for
The summarized list of the major impacts considered for EMP is illustrated below.
Impacts on Land Environment:
Minor changes in land cover due to minor construction activity at the project site.
Contamination of land due to disposal of untreated sewage during the construction & operation phase.
Contamination of land due to disposal of untreated effluent during the operation phase.
Impacts on Air Environment
Air pollution due to site preparation works as well as air borne construction materials during construction phase.
Air pollution from transportation vehicles during the Construction phase & Operation Phase
Air pollution due to plant operations & related activities during the operation phase
The major sources of air emission from the proposed project are:
Point source emissions (Furnaces)
Dust emissions (Minor construction activity and transportation activity)
Impacts on Water Environment
Impacts on water resources due to abstraction to meet the water requirement of the proposed expansion.
Water pollution due to runoff from construction site containing soil particles & construction materials.
Impacts on water resources due to abstraction to meet the water requirement of proposed expansion.
Impacts on Noise Environment
Impacts due to noise generation by transportation activities during Construction & Operation phase
Noise generation from Construction works
Noise generation during Operation phase
Impacts on Ecological Environment
Clearance of minor useless vegetation for area expansion
Direct & Indirect Impacts on vegetation & flora and fauna due to process emissions, flue gas emissions and noise impacts.
8.3 ENVIRONMENTAL MANAGEMENT PLAN
8.3.1 LAND ENVIRONMENT & SOLID/HAZARDOUS WASTE MANAGEMENT
a. Construction Phase
The major problem will be disposal of excavated earth generated during construction phase which shall be well handled by landfills to level the low lying areas.
Reuse of construction waste for PCC works, development of roads and misc. filling for construction works.
Vegetation clearance shall not be a major issue as the proposed expansion will be carried out in the existing premises using spare open land.
Use of excavated soil for landscaping & gardening/greenbelt development.
Storage & handling of construction materials shall be done properly to avoid spillage or leakage.
Further, the proponent has planned additional Green Belt within the premises, which shall prove to be beneficial from all aspects and shall effectively compensate the minor impacts.
Care shall be taken that domestic waste of construction workers is not disposed of on land.
Existing sanitation facilities shall be provided for construction workers.
b. Operation Phase
During the operation phase of proposed expansion no additional Solid/Hazardous waste will be generated. No hazardous/solid waste is generated from existing CCR plant also. Hence impacts on land environment due to disposal of solid/hazardous waste shall be ruled out.
Impact on land environment due to disposal of untreated sewage will not be raised as sewage will be treated in existing sewage Treatment Plant (STP).
Additional Effluent will be treated in existing effluent treatment plant and treated effluent will be reuse for slag granulation, lime slurry preparation and gardening purpose.
Hence, after implementation of proper EMP there will be no adverse impacts on land environment.
8.3.2 AIR ENVIRONMENT MANAGEMENT
a. Construction Phase
Potential sources of air pollution during construction of additional facility at the plant premises area are (i) dust emissions due to vehicle movement and (ii) exhaust emissions from diesel generator, heavy construction equipment, and vehicles. The impact on air quality during construction phase will be minimized by adopting following mitigation measures.
Dust suppression by regularly spraying water on roads and work sites shall be practiced.
Wetting or covering stockpiles, the proper location of material stockpiles and covering loaded trucks during the transportation of material shall be ensured.
Loading/Unloading of construction materials shall be done in a proper way to avoid dust generation.
Use of low-emission vehicles and wherever feasible, construction equipment powered by electricity shall be preferred.
Maintenance of engines and use of vehicles with PUC Certificates. Contractors will be required to strictly implement these measures.
DG set equipped with stack of adequate height.
Engines of idle vehicle machineries/equipment not in use, shall be turned off.
Regular inspection for proper implementation of mitigation measures shall be done.
b. Operation Phase
In the proposed expansion project, the sources of air pollution will be:
Point source emission (furnace)
Fugitive emission (from transportation activity)
a) Action Plan to Control point source emissions from all the sources
Company will adopt the following mitigation measures to reduce the impact on air environment:
Source of point source emission will be stack attached to furnace. To control the emission from the furnace 26 meter height stack shall be provide, no other air pollution control equipment will be required as fuel will be LNG.
Adequate stack height of 26 meter is already provided with existing furnaces.
Regular monitoring of stacks and vents is/shall be carried out to check the emisshall be maintained.
Regular ambient air quality monitoring is/shall be carried out within premises and in the nearby area for PM, SOx and NOx.
Ensuring the operations of various process units are as per specified operating guidelines/ operating manuals.
Strict adherence to maintenance schedule including lubrication for various machinery/ equipment.
An additional greenbelt around the factory will be developed for reducing the air pollution and attenuation of noise.
Good house-keeping shall be maintained in the premises to avoid dust emissions.
b) Action Plan to control ambient air quality as per NAAQS Standards:
The design stage endeavors to mitigate the problems related to environment and health at the process technology/source level itself. Besides standards, emphasis would be given to comply with all design standards/ regulatory norms as specified by CPCB/MoEFCC/GPCB etc.
No secondary fugitive emission will be generated from the proposed expansion
The gas emission from the furnaces is/will be vented through adequate height and dia. of chimney.
It is proposed to develop additional Green Belt within the premises, which will intercept the dispersing particulates. Also the sprinkling of water is recommended in areas where dust emission is expected within the plant.
Ambient air monitoring shall be carried out by an independent agency every month to assess particulate matter, SOx & NOx in at different locations within the plant.
The internal roads of the plant are constructed from RCC to minimize dusting due to transportation.
8.3.3 WATER ENVIRONMENT MANAGEMENT
a. Construction Phase
Water requirement during the construction phase will be fulfilled by existing source. No extraction of water shall be done from the borewell or nearby surface resources for construction activity.
Further the proponent shall ensure to implement good operation practices to minimize the use of water so as to reduce the consumption of water to maximum possible extent.
Proper drinking water facility will be made available to the construction workers.
Due care shall be taken to avoid formation of stagnant pools, which may cause damage to the aesthetic condition as well as other environmental & socioeconomic factors.
Proper sanitary facility of the existing unit will be provided for construction worker during the construction phase and waste will be treated in existing Sewage Treatment Plant (STP).
b. Operation Phase
Industrial water requirement of existing CCR plant is 640 KLD and for the proposed CCR plant additional 400 KLD water will be required.
Domestic water requirement of existing plant is 10 KLD and for proposed plant additional 8 KLD water will be required.
Source of water for expansion will be existing source i.e. GIDC water supply.
Only 8.006 KLD of additional wastewater will be generated from industrial cooling and coolant wash water, which needs treatment and shall be treated in the existing ETP and treated water shall be reused for slag granulation or lime slurry preparation in ETP.
Generated additional sewage will also be treated in existing Sewage Treatment Plant (MBR Technology) of 500 KLD capacity. Treated sewage is/will reuse in process.
Quality of wastewater Table No: 8.3.1 Wastewater Quality
Sl. Parameters Unit
Before
Treatment After Treatment
Min Max
1 pH 5.5 9.0 5.5 9.0
2 Turbidity NTU 21 43 < 20
3 Oil & Grease mg/l 28 35 < 20
4 Total Suspended Solids mg/l 150 300 < 100
5 Chemical Oxygen Demand mg/l 50 250 < 250
6 Bio Chemical Oxygen Demand 3 day
at 27o C
mg/l 20 100 < 100
Details of Existing ETP:
Industrial effluent streams from various plants like Smelter, Refinery, Sulphuric Acid plant, Phosphoric acid
plant, DAP plant, CCR Plant, PMR plant is sent to main ETP by pumping, which is collected in Raw Effluent
Tank - I & II. ETP is having capacity to treat effluent up to 320 m3 /hr of avg. load (max 400 m3/ hr).
Additional effluent generated (i.e 8.006 KLD) due to proposed expansion will also be treated in existing ETP.
