PROJECT DESCRIPTION W.R. T. 16MW Captive power...

CHAPTER 2: PROJECT DESCRIPTION 2.1

PROJECT DESCRIPTION W.R. T. 16MW Captive power plant

2.0 INTRODUCTION M/s. Pudumjee Pulp & Paper Mills Ltd. is planning to shift its operations from their present

location in Pune to Mahad in Maharashtra along with some new machines too. To cater to the

additional power requirement for the proposed expansion & to improve the availability of

power consistently to the plant, the company proposes to set up a co-generation plant to

cater to its captive requirement of power and steam. M/s. Pudumjee Pulp & Paper Mills Ltd.,

Mahad, has proposed 16MW Coal based Power Plant at MIDC Mahad, Dist- Raigad,

Maharashtra state. This project development will give rise to social and economic

development measures in the study area.

2.1. TYPE OF PROJECT The proposed unit is co-generation power plant covered under the category of 1(d) in schedule “

co-generation power plant)” of EIA Notification 2006. This project falls under category ‘B’.

2.2. CAPITAL INVESTMENT The expected cost of the proposed project will be around Rs. 71.56 crores.

Sl NO. DESCRIPTION

16 MW capacity Rs lacs

1 CIVIL COST 800.00

2 PLANT AND MACHINERY

2.1 WATER TREATMENT PLANT 125.00

2.2 BOILER (INCLUDING THE TURBINE STEAM PIPING, PRDS FOR PROCESS STEAM AND PROCESS STEAM PIPING) 100 TPH 1700.00

2.3 DOSING SYSTEM AND DEAERATOR CUM STORAGE TANK 75.00

2.4 ELECTRO STATIC PRECIPITATOR 325.00

2.5 CHIMNEY 95.00

2.6 FUEL BUNKER 95.00

2.7 FUEL HANDLING SYSTEM 350.00

2.8 ASH HANDLING SYSTEM (DENSE PHASE) WITH ASH SILO 150.00

2.9 DCS BASED CONTROL SYSTEM WITH FIELD INSTRUMENTS 100.00

PROJECT DESCRIPTION 2.2

2.10 TURBO GENERATOR 16 MW 1350.00

2.11 AIR COOLED CONDENSER 400.00

2.12 AUXILIARY COOLING TOWER & CW PUMPS 30.00

2.13 POWER PLANT INTEGRAL PIPING OTHER THN STEAM PIPING 40.00

2.14 POWER PLANT ELECTRICALS OTHER THAN SWITCHYARD 350.00

2.15 EOT CRANE+ AIR COMPRESSOR& MISC 90.00

2.16 AIR CONDITIOING FIRE EXTINGUISHER 60.00

SUB TOTAL-I 5335.00

3 PACKING & FORWARDING 53.35

4 ERECTION & COMMISSIONING CHARGES 640.20

5 TRANSPORTATION 160.05

6 CONSULTING FEES AND EXPENSES 50.00

SUB TOTAL -II 903.60

7 TAXES AND DUTIES

7.1 EXCISE DUTY @ 10.3% 549.51

7.2 SERVICE TAX @ 10.3% 102.40

7.3 SALES TAX @ 2% 117.69

SUB TOTAL -III 769.60

8 PRE OPERATIVE EXPENSES INCLUDING TRAVEL, INTEREST DURING ONSTRUCTION PERIOD AND DEPOSITS, IF ANY) 605.61

GRAND TOTAL 7808.20

PROJECT COST NETT OF CENVAT 7156.29

2.3. NEED OF THE PROJECT For economic growth of any country, development of energy resources is vital importance.

Energy in the form of electricity is most convenient for generation, transmission and

utilization and hence it is widely used. The living standard and prosperity of nation vary

directly with increase in use of power.


Faced with the grim realities of load shedding, voltage fluctuations, tripping, consequent loss

of production, damage to costlier/critical equipments and with no hopes of improvement in

this scenario in the foreseeable future, Many power intensive industries have to install their

own captive or co-generation plants. This will ensure uninterrupted, quality power, meeting

the needs of the companies.

The present trend in process industries which consume large quantum of process steam and

electric power is to establish captive power generation facility; which can simultaneously meet

the process steam as well as the electrical energy requirements of the plant. The captive

power plant will go a long way in improving the overall energy balance of the plant which will

in turn improve the economy of operation. In line with the present trend, establishing a

captive power generation facility in M/S. PUDUMJEE PULP & PAPER MILLS LTD is expected to

substantially improve the overall energy economy.

Moreover power tariff of state electricity board is high and is expected to increase further in

the years to come, M/S. PUDUMJEE PULP & PAPER MILLS LTD will have to pay a very high

cost if the plant power requirements are to be met from the electricity board grid. On the

other hand, if power requirements are to be met from the in-plant power generation through

new diesel generator sets using Diesel, the prevailing uncertainty with regards to the price of

oil due to changing global scenario, and the cost of oil at the present level makes the DG sets

based in plant power generation also unattractive. In addition, generation of steam in a

separate boiler adds to the production cost. In order to reduce the cost of production to

sustain the operation in the globally competitive environment, it is essential for M/S.

PUDUMJEE PULP & PAPER MILLS LTD to look into the examine its viability. It is imperative to

improve the energy efficiency and thereby the economy of plant operation by simultaneous

generation of steam and power from one source of fuel.

2.4 LOCATION OF PROJECT SITE The unit is located at K-5 Additional Industrial Estate, MIDC Mahad, Dist Raigad, State

Maharashtra. The project site is located in additional Industrial Estate of MIDC. The

environmental setting around the proposed site is given in Table 2.1. The location map of

project site is shown in figure 2.1 & Google map of project site is shown as Figure 2.2.

Table 2.1: Environment Setting of the Proposed Project

Sr. No.

Particulars Details

1 Latitude 180 06’N,

2 Longitude 730 30’ E

3 Elevation above MSL 115 ft above Mean Sea Level


Sr. No.

Particulars Details

4 Climatic Conditions.

Annual Mean Maximum Temperature: 31.8 °C

Annual Mean Minimum Temperature: 17.7°C

Annual Mean Maximum Rainfall: @ 3360 mm**

5 Present land use at the location Industrial

6 Nearest Village Birwadi ( 2.5 km)

7 Nearest Town/City Town: Mahad (12 km)

City: Mumbai (200 km, SE)

8 Nearest Railway Station Veer Railway Station (27 km, SE)

9 Nearest Hospital MMA Hospital (4 km, SE)

10 Nearest Highway NH –17 (8 km, WSW )

11 Nearest Airport Mumbai Airport (200 km, ESE)

12 Nearest Water Body Kal River (3.0 km, ESE)

13 Ecologically sensitive zones within 10-

km area (NPKs, WLS etc) Nil

14 Ecologically sensitive Areas within 5

km area Villages: Jite, Solamkond

15 Historical/ Archaeological places Nil

16 List of Major Industries (within 10 km)

Sandoz Pvt. Ltd., Piramal Health care, Kopran,

Adventz (Zuari Agro), Vinati Organics Ltd, Pidilite

industries Ltd, laxmi Organics industries Ltd, Shri

Hari Export Ltd.

17 Critically Polluted Areas within 10 Km

radius Nil

18 Seismic Zone Zone –III


Figure 2.1: Location Map of Project Site


Figure: 2.2: Google Map of Project Site

2.5. Highlights of projects

SL.NO DESCRIPTION DETAILS

1 PROJECT 16 MWe Co-generation power project

1.1 Proponent M/s. PUDUMJEE PULP & PAPER MILLS LTD

2 Location details

2.1 - Place Mahad

2.2 - District Raigad (MH)

2.3 - State MAHARASHTRA


3 Plant capacity 1x 16 MW co-generation power plant

4 Technology

Conventional steam cycle operating in Rankine cycle

consisting of 1 no. AFBC boiler and 1X 16 MW

extraction cum condensing Turbine

5 Fuel

Indian and imported coal shall be 50 % each. However

the boiler shall be capable of operation with 100 % of

Indian as well as imported coal.

6 Source of fuel OUT SIDE SOURCING

7 Fuel requirement

(APPROX)

INDIAN COAL : 18908 kg/hr

IMPORTED COAL: 19854 kg/hr

8 Source of water Raw water from MIDC supply.

9 Water requirement 735 m3/day / 31 m3/hr

10 Gross power Generation 16000 Units/hour

11 In house Consumption 2080 Units/hour

12 Net power generation 13920 Units/hour

13

Land requirement (Acres) 4.25 Acres (Power Plant equipments & Switch Yard)

1.00 Acres (Open Yard for Coal Storage)

1.00 Acres (Covered coal storage)

Total of 8.00 Acres is required including roads.

14 Total Project Cost Rs. 7156 Lacs

15 Project implementation

schedule

3 months for major machinery order placement

16 Commissioning schedule 16 months from zero date to commissioning.


Figure: 2.3: Layout Plan of Proposed Project

2.6 Technology Alternatives: Method of Power Generation The thermal power plant option selected is a co-generation thermal power plant with

Atmospheric Fluidized Bed Combustion (AFBC) boilers.

Conventional Method of Power Generation

The conventional method of power generation and supply to the user is wasteful in the sense

that only about a third of the primary energy fed into the power plant is actually made to

available to the user in the form of electricity. In conventional power plants, efficiency is only

35% and remaining energy is lost as heat through the stack or condenser water. The major

loss in the conversion process is the heat rejected to surrounding water or air due to the

inherent constraints of the different thermodynamic cycles employed in power generation.

Co-generation

Co-generation is the merging of a system designed to produce electric power and a system

used for producing industrial heat and steam for industrial processes. This system is a more

efficient way of using energy inputs and allows the recovery of otherwise wasted thermal

energy for use in an industrial process.

Through the utilization of the heat, the efficiency of the co-generation plant can reach 90% or

more. In addition, the electricity generated by the co-generation plant is normally used


locally, leading to negligible transmission and distribution losses. It is an accepted fact that

co-generation therefore offers energy savings ranging between 15-40% when compared

against the supply of electricity and heat from the power stations and boilers. Its long term

future in the global energy markets is secured by its ability to provide operational, financial

and environmental benefits from to a single unit of a fuel. The following benefits arise as co-

generation is a well proven technology, recognized world over as a cleaner alternative to

traditional centralized generation:

Base load electrical supply

Security of supply

Increased diversity on heating and hot water

Steam raising capabilities

Considering the above points, Pudumjee has selected co-generation as its chosen power

generation option over a conventional option.

Technology Alternatives: Boilers

As mentioned, two, Atmospheric Fluidized Bed Combustion Boilers (AFBC) of 100 Tonnes per

Hour (TPH) capacity have been proposed for the project. Conventionally, stoker fired boilers

have been used for power generation. Stoker fired boilers do not provide equivalent efficiency

as compared to fluidized bed combustion boilers across a number of key parameters

including: boiler size, flexibility of fuel quality, ability to burn fines, pollution control, low

corrosion and erosion, ash removal, simple operations such as start-up, faster response to

load fluctuations, avoidance of slag formation or soot blowing, reduced maintenance and

higher thermal efficiency. The Machinery and Units The captive co-generation power plant of 16 MW capacity will be operated on 100 % coal

Imported or Indian) throughout the year. It shall employ High Pressure and Temperature

configuration Boiler and Steam Turbine, as well as ESP for emission control, DCS and SCADA

control system for efficient operations.

The Machinery and units which to be installed are as follows;

1. Boiler (Multi Fuel Fired) 2. Turbine 3. Water Cooled Condenser 4. Cooling tower 5. Coal Storage and handling system 6. Ash Handling system 7. Generator 8. Pumps 9. Water supply, DM plant and Treatment Plant 10. Vessels and Tanks 11. Piping 12. Insulation 13. Civil and Structure


14. Electricals 15. Control and Instrumentation 16. Fire hydrant system 17. Power switch yard

2.7 BASIC REQUIREMENT

The basic input requirement for the power plant is fuel and water.

M/s. PUDUMJEE PULP & PAPER MILLS LTD is planning to source the fuel namely Imported coal

& Indian coal. On the basis of the design consideration and expected heat rate of the power

plant, the consumption of imported coal firing as mentioned elsewhere in the report while

generating 16 MW on co-generation.

The following configurations have been proposed

STEAM GENERATOR SL.NO DESCRIPTION DETAILS

a. No. and ratings 1 no, 100 TPH, 88 ATA and 525°C

b. Type of boiler AFBC

c. No. of boiler fans 2 x 100% ID, FD and PA fan

d. Type of APCS Electro Static Precipitators

STEAM TURBINE GENERATOR

SL.NO DESCRIPTION DETAILS

a. No. and ratings of turbine 1 no. 16 MW having inlet parameters

of 85 ata and 520°C

b. Capacity 1x 16 MW,11 KV

c. No.of controlled extractions 1 no.

d. No.of bleed 1 no.

Emphasis has been given on optimum layout, energy efficient, environment friendly and state

of art technology, special care shall be taken in choosing pollution control equipment so as to

maintain emission levels below 50 mg/Nm^3. Fuel shall be stored in a heap and reclaiming

shall be with pay Loader. The fly ash generated from the power plant shall be truck

transported to suitable destination. For control of boiler and TG, Micro processor based DCS

controls has been considered.

2.7 HUMAN RESOURCES


Hiring of project consultant for project engineering is envisaged. 60 personnel shall be

required during the operation phase and are summarized in Table below:

MANPOWER DETAILS

SL.NO MANPOWER CATEGORY SHIFT

1. Assistant Manager General

1

2. Operation Engineer (B.O.E) Shift 1

3. Maintenance Mechanical Engineer General 1

4. Engineer (Electrical & Instrumentation) General 2

5. First Class Boiler Operator (3 + 1) Shift 4

6. Second Class Boiler Operator (3 + 1) Shift 4

7. Turbine Operator (3 + 1) Shift 4

8. Fitter (Mechanical, Electrical, Instrument) Shift + Gen 8

9. Water Treatment Plant Operator & Lab. Chemist Shift + Gen 8

10. Helper for Operation & Maintenance Shift + Gen 25

Some personnel have to be recruited and shall be involved during construction stage itself for

execution of the project and make them acquainted with the system. Comprehensive training

programme have been envisaged for key personnel both in operation and maintenance of the

plant at an appropriate stage of project execution. The training shall encompass:

i) Manufacturers works

ii) On job training during commissioning

2.8 FUEL ANALYSIS:

Constituent Unit Indian coal Imported coal Carbon % 39.9 40.51

Hydrogen % 2.48 3.02 Oxygen % 6.76 11 Sulphur % 0.38 0.26 Nitrogen % 0.48 0.64 Moisture % 8 38

Ash % 42 6.57

GCV, Kcal /kg 3800 3900


2.9 Water and waste Water treatment plant: Water is required to meet the requirement of:

Makeup water for boiler makeup and auxiliary cooling tower make up. The daily water

requirement is to be met from MIDC or Savitri River. From the view point of basic

requirement viz. fuel and water for auxiliary system no major problems are envisaged.

Figure: 2.4: Water Balance Diagram

Water system facilities requirement for the complete power plant are covered under the following

categories.

1) Raw water pretreatment system.

2) Water treatment plant for power cycle make up.

3) Water treatment plant for cooling tower make up.

The raw water supply for the power plant shall be arranged from savitri River and MIDC

water to plant site. In plant site, the water will be stored in the raw water storage tank.


Figure: 2.5: ETP Flow Diagram

RAW WATER PRETREATMENT SYSTEM

A pretreatment plant to treat the water received to produce water for the power plant shall

be considered. 2x100% capacity raw water pumps (1W+1S) shall pump raw water from the

raw water storage tank to the pretreatment plant consisting clarifier shall be considered. All

pipings, fittings and valves etc as required for complete intake system with handling

facilities for raw water intake shall be provided. Chlorine dosing system in boiler make up

line is considered in order to reduce the chloride content in the raw water. There are two

streams considered, one for boiler heat cycle make up. The boiler make up stream shall

consist of chlorine dosing system with MGF, SAC, SBA, Degasser unit and MB units. The

cooling tower make up comprises of MGF & Softner. Both the streams will have common

pumps for feeding the required water.

Water treatment plant for heat cycle make up

The water treatment plant shall provide makeup of specified quality and quantity to meet

the heat cycle makeup of the unit. The WTP permeate flow has been selected considering

process steam losses, boiler blow down, other vent / drain losses. The operating hours of

the plant shall be considered as 20hrs in a day. For the requirement of very high quality of

water with conductivity less than 0.5 micro Siemens per cm and total silica, less than 0.02

ppm and removal of complete colloidal silica the water treatment plant with reverse osmosis

followed by ion exchange is proposed for this plant. Water must have a very low silt (solids)


content to keep the membranes from plugging up. From MGF, water will be directed to

Degassifier tower to remove carbon di oxide and then stored in permeate water storage

tank. From permeate water storage tank, the water will be pumped by permeate water

transfer pumps to Mixed Bed Exchangers through SBA and SAC to produce demineralized

water.PH boosting system at the outlet of MB shall be considered in order to maintain the

required PH of water.

Demineralized water will be collected in the demineralized water storage tank. Water from

the demineralized water storage tank will be distributed to the consumption points through

pumps in others scope.

Water treatment plant for cooling tower make up

The water treatment plant shall provide makeup of specified quality and quantity to meet

the cooling tower makeup of the unit. The WTP capacity with Softner outlet flow has been

selected considering evaporation losses in cooling tower, drift, cooling tower blow down &

other vent / drain losses. The operating hours of the plant shall be considered as 20hrs in a

day.

In the complete plant, all continuous duty pump requirement will have each 2 nos x 100%

pumps with (1W+1S) arrangement to have flexibility for pumps and the plant will be having

single stream with space for future provision shall be considered. The entire system shall be

housed in a building.

Control & Instrumentation

The operation shall be based on a control system, which consists of a control panel

complete with PLC system. The control system will have all safety interlocks. Also the PLC

will have RS 485 modbus connectivity, so that it will be linked with plant DCS systems.

Plant instruments shall consist of the following minimum requirements.

1) Inlet and outlet pressure indicators for vessels & discharge pressure indicators for

various pumps.

2) Flow indicators

3) Level / flow /pressure switches

4) Conductivity meters at R.O outlet and MB outlet with transmitters.

5) PH meters at MB outlet.

6) ORP meter with auto dump valves.

Control panel shall be considered to locate instruments / annunciators in order to operate

the plant.

As the WTP effluent comprises mainly of regeneration waste and filter back wash, suitable

blow down from the neutralizing pit shall also be provided. Pumps for effluent handling shall

be considered.

WATER QUALITY REQUIREMENTS


FEED WATER

Total Iron max. ppm 0.01

Total copper Max. Ppm 0.01

Total silica Max. Ppm 0.02

Oxygen Max. Ppm 0.007

Hydrazine residual Ppm 0.01 – 0.02

PH at 25 OC (Copper alloy pre-boiler system) 8.8 – 9.2

PH at 25 OC (Copper free pre-boiler system) 9.0 – 9.4

Permanganate Max. Ppm Nil

Hardness Ppm Nil

Total CO2 Ppm Nil

Oil Ppm Not allowed

BOILER WATER Total dissolved solids Ppm Not more than 100

Specific electrical conductivity at 25 OC Us/cm Not more than 200

Phosphate residual Ppm 15 – 25

pH at 25 Deg.C. 9.8 – 10.2

Silica Max. Ppm Note no. 4 & 9

2.10 Fuel handling system

The fuel handling system consisting of Fuel conveying, Crushing, screening and Feeding to

boiler bunkers. Also the system includes Vibratory feeders, magnetic separator etc.

The handling system shall be capable of handling the following fuels:

100% Indian coal, 100% Imported coal

Fuel from stockpile will be moved to the ground hopper using bull dozers/dumpers/front

end loaders as applicable. Also provision has been envisaged to dump the fuel received

through truck directly into the ground hoppers.

Fuel from ground hopper will be fed to Crusher & vibrating screen designed to screen out

foreign particals and over size. The Product Fuel received from screen will be falling to

conveyor that will be fed to boiler bunkers. The over size Fuel will be recycled.

At bunker top, ‘Y’ chutes shall be considered to distribute the Fuel uniformly to the

bunkers.

2.11 Ash handling system

A Dense phase Pneumatic type fly ash handling system is proposed forboth bed ash& Fly

ash. Out of the total ash generated, 10% is considered as bed ash and remaining 90% is

collected as fly ash at various hoppers like Economiser, Air heater and ESP hoppers.


Considering 90% of ESP ash will be collected in field– I as well as field – II & III and also

the adverse condition of field –I or field –II not in line. Generally for design purpose the

same ash quantity shall be considered and all the three fields have provision for inter

changeability.

A Dense phase Pneumatic type fly ash handling system is proposed for the removal of bed

ash collected at furnace bottom, fly ash collected at Economiser, APH & ESP hopper zones.

The system will start from Surge hopper, which is kept above the Ash transmitter vessel.

Water jacket cooling facility, which is required to cool the fly ash temperature less than

200°C, shall be provided in Surge hoppers as applicable. The fly ash collected in the

various hoppers will be fed by Gravity into individual transmitter vessel located below the

hoppers.

The system shall have dual operation ability either through level probe material sensing or

Timer based mode. In Timer based mode, the system shall convey material automatically

in batches at preset programmable interval of time. In level probe mode, level sensing

probe provided in the hopper above Denseveyor of Transfer level shall sense the pressure

of material in the hopper and initiate the conveying cycle. Dome valve shall open and

allow the material to gravitate into transmitter vessel for a preset time & then close

automatically based on the Ash level in the hopper. After the inlet valve closes,

compressor air will be allowed in to the vessel by the opening the air inlet valve.

Once the desired conveying pressure is reached inside the vessel, the outlet valve will

open and the ash shall be conveyed to Fly ash silos through suitably sized pipes. The

conveying air will be vented out from silo through the bag filter provided on top of the

silo. Further, disposal of Fly ash from silo will be by Trucks. Silo is of RCC construction.

2.12 Chimney

The chimney height depends upon the Sulphur content in the fuel. The chimney height of

the proposed boiler is 63 m considering 100% Indian coal, 100% Imported coal having

GCV of 3800 kcal/kg with 0.38 % Sulphur content. It is used to exhaust the fluegas to

the atmosphere. Chimney is of RCC construction.

Turbo generator set

The Turbine shall be horizontal, single cylinder, Extraction cum condensing design

coupled to a generator to generate the rated output with the steam inlet parameters

as specified elsewhere in this specification.

The Steam turbine, gear box, main oil pump with its interconnecting piping and its

supports shall be assembled and aligned on a single skid and shall be delivered.


All the cabling within the skid shall be laid in the metal conduits and shall be fixed to

the base frame with respective junction boxes mounted on the skid.

2.13 ROADS AND PAVEMENT

Any new roads proposed within the plant shall be with 6.0 m black topping & 1.5 wide

shoulders on either side of the roads or shall be single lane roads with 4.0 m black topping

and one meter wide shoulders on either side of the road for sub roads having lesser access.

Roads geometry and construction shall be in accordance with Indian Road Congress (IRC) or

equivalent. All the roads shall be designed to withstand the largest expected loads.

Minimum longitudinal slope of the road shall be 1 in 200 where there are curbs on each

side. Without curbs the roads may be laid flat. Slope from crown to edge should be 1 in 50

generally on straight stretches. Super elevation shall be provided on curves.

The sub grade shall be compacted to the levels, falls, widths and cambers as per the grade

requirements. Sub base will be laid on a prepared sub grade. Base and final road surfacing

shall be of bitumen macadam. Seal coat will also be provided. Precast RC kerbs on both

sides of road shall be provided. The rainwater shall be collected in road side gullies and let

into the plant surface drainage system.

Paving areas shall be properly graded and compacted to required grade and slopes before

providing the base layer. Reinforced concrete paving (grade MI5) shall be done in alternate

panels not exceeding 3.0 m x 3.0 m in size. Construction joints shall be filled with sealing

compound. Around equipment foundations / columns isolation joint shall be provided upto

full depth of the pavement. Expansion joints shall be provided at a maximum spacing of

15.0 m.

Top surface of the pavement shall be provided with adequate slopes as required for the

surface drainage.

2.14 Solid and Hazardous Waste

Sr.

No.

Type of Waste Quantity Disposal

1 Domestic Solid waste 15 Kg/day Used as Manure for Gardening

2 Used Oil 1200 Lit / Annum MPCB authorized Recycler

3 Fly ash 83 MT/Day The fly ash will be stored in pneumatic silos of sufficient capacity (5 day storage) and provided to nearby cement plants


5 Bottom Ash 9 MT/Day As per MPCB directives

2.15 Pollution Monitoring System

Monitoring of various environmental aspect is of prime relevance in setting-up the proposed power plants. The following aspects would be critically monitored:-

To keep watch on the state of pollution To generate data for predictive and corrective measures To quantify environmental impacts The important area requiring periodic/conditions monitoring are:-

Stack emission Ambient air quality Disposed water quality

Electronic smoke density analyzer and gas analyzer equipment is proposed to provide for continuous monitoring of particulate matters at outlet of ESP and sample analysis of SO2 and other pollutants from chimney would be carried out. Waste water would be checked for any harmful pollutants before discharging to outfall. An oil/water separation unit has been envisaged near fuel oil day tank/pump house area in order to keep plant drains free of oil and to reclaim waste oil as far as practicable. Oil thus separated would be returned to the fuel oil tank and used or disposed off by incineration. 2.16 Environmental Aspects For thermal power stations, the Indian Emission Regulations dated July 1984 stipulate the limits for particulate matter emission and minimum stack heights to be maintained for keeping the sulphur dioxide levels in the ambient within the air quality standards. The characteristics of the effluent from the plant would be maintained so as to meet the requirements of the State Pollution Control Board and the Minimum National Standards for Thermal Power Plants stipulated by the Central Board for Prevention and Control of Water Pollution. Windblown pollution will be contained by adequate green belts to be planned during construction. Wastewater, if any, from the plant will be adequately treated before being discharged into the common brine water discharge line leading to river. There being no fragile environmental consideration for the area, no degradation is apprehended. The effect of the proposed project on environment would be mitigated in the following manner:-

Air Pollution: A highly efficient electrostatic precipitator with properly designed boiler and a 63 m high twin stack shall contain air pollution in the form of suspended particulate matter and gaseous emission.

Liquid effluent shall be treated and collected in a guard pond. Liquid effluent would be recycled after treatment as far as practicable. Following CPCB norms, attempts would be made to attain “zero discharge”.

Solid waste in the form of coal ash shall be utilized for mine filling and other possible usages. Noise pollution shall be curbed by selection of suitable equipment.

Green verge to be developed as per MoEF/CPCB norms. Fly ash from the station would be utilized in land filling of low lying areas in the

vicinity, as filler materials in cement plants located in adjoining districts, for construction of bunds, flood protection dykes, ash dykes, road sub-base etc.

* * * * *

PROJECT DESCRIPTION W.R. T. 16MW Captive power...

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