watertreatmentplant

Requirement Of Water A) COOLING PURPOSE

FOR GT’S, STG LUBE OIL, GENRATOR, EXCITER AND OTHER AUXILLARIES , CONDENSER

B) FOR STEAM GENERATION

REQUIRMENT OF WATER TREATMENT

FOR MAKING DE-MINERALISED AND

SOFT WATER AS PER

REQUIRED

PARMETER OF WATER FOR THE PLANT

WE ARE USING UPTO 19 MLD

TREATED SEWAGE RAW WATER

FROM DG STP & SNH STP DUE TO

NON AVIALABLITY OF RAW WATER

FROM OTHER SOURES i.e. YAMUNA

RIVER,CANAL OR GROUND WATER.

Analysis Parameter of the Raw water from STP:-

Raw Water Quality:-

Parameters Value Parameters ValuepH 6.8 to 8.5 FRC Nil

COND 1300 to 1800 PHOSPHATE 0.1

ALKALINITY 260 to 400 SILICA 25 to 30

TOTAL HARDNESS

260 to 340 TURBIDITY <15 NTU

CALCIUM 140 to 230 COD <150

CHLORIDE 160 to 230 Organic matter <150

IRON 0.2 BOD

AERATORRaw water form DG & SNH

RESERVOIR -A16000m3

RESERVOIR – B16000m3

SUMP

RAW WATER PUMP - A675m3

RAW WATER PUMP – B675 m3

STEALING CHAMBER

CLARIFIER - 1 CLARIFIER - 2

CAUSTIC (100-140PPM)

RAW WATER FROM SUMP

CHLORINE (5-15 PPM)ALUM (60-100 PPM)

PE (1.5 – 4 PPM)LIME (140-200 PPM)

Lime removes the temporary hardnessNaOH removes both temporary as well as permanent hardness

Clarified Water Quality:-Parameters Value Parameter ValuepH 9.8 to 10.2 CHLORIDE 180 to 250

COND 1300 to 1800 IRON 0.2

ALKALINITY 280 to 400 FRC 1

TOTAL HARDNESS

160 to 250 PHOSPHATE 0.1

CALCIUM 80 to 150 SILICA 25 to 30

COD 100 to 120 TURBIDITY <30 NTU

ORGANIC MATTER

100 to 120 BOD

CLARIFIEDWATER

SAND GRAVITYFILTER - 1

SAND GRAVITYFILTER - 2

SAND GRAVITY FILTER - 3

CT MAKEUP PPRO-SOFT WT PP

HVAC PPHRSG WASH PP

SULPHURIC ACID

Outlet Parameter after Gravity Filter:-

Parameters Value Parameters ValuepH 7 to7.8 IRON 0.2

COND 1300 to 1800 FRC <1

ALKALINITY 180 to 260 PHOSPHATE 0.1

TOTAL HARDNESS

150 to 240 SILICA 25 to 30

CALCIUM 70 to 150 TURBIDITY <5 NTU

CHLORIDE 180 to 260 COD 100 to 120

BOD Organic matter 100 to 120

SOFT WATER FROMLSP / RAW WATER

TBGF-1 TBGF2

RO FEED PP TOACF

FeCl3PE

Cl2

TBGF Water Quality:-

pH 6.8 to 7.2Turbidity <0.5FRC <0.5

RO FEED PP A& BOF 150 m3/hr

ACF – A ACF - B

CARTAGE FILTER OF5 MICRON - A

CARTAGE FILTER OF5 MICRON - B

CARTAGE FILTER OF5 MICRON- C

Reverse osmosis occurs when the water is moved across the membrane against the concentration gradient, from lower concentration to higher concentration. To illustrate, imagine a semi permeable membrane with fresh water on one side and a concentrated aqueous solution on the other side. If normal osmosis takes place, the fresh water will cross the membrane to dilute the concentrated solution. In reverse osmosis, pressure is exerted on the side with the concentrated solution to force the water molecules across the membrane to the fresh water side. Reverse osmosis is often used in commercial and residential water filtration. It is also one of the methods used to desalinate seawater. Sometimes reverse osmosis is used to purify liquids in which water is an undesirable impurity (e.g., ethanol).

WATER FROM CARTAGE

FILTER

RO BOOSTER PP STAGE – I

A

RO BOOSTER PP STAGE – I

B

RO BOOSTER PPSTAGE – I

C

RO BANK – ISTAGE - I

RO BANK – IISTAGE I

HCl SMBS

ANTI SCALLENT

PERMEIT BREAKTANK

RO BOOSTER PPSTAGE – II

A


B

RO STAGE – IIBANK - I

RO STAGE – II BANK - II

DE-GASER TOWER

A

DE-GASER TOWER

B


C

WATERFROMRO-STG -I

PERMEATE STORAGE TANK A & B

OF 1300 m3 EACH

M - B FEED PPA

M - B FEED PPB

M - B FEED PPC

MIX BED TANKA FOR CAP. OF

4500m3

MIX BED TANKB FOR CAP. OF

4500m3

MIX BED TANKC FOR CAP. OF

4500m3

DM STORAGE TANK – A OF

12500m3

DM STORAGE TANK – B OF

12500m3

GENERALLY CONDUCTIVITY OF DM WATERIS 0 AND SILICA IS UN TRACABLE

• HRSG FILL PUMP • POWER CYCLE MAKE UP PUMP• NOX CONTROL PUMP • REGENERATION WATER PUMP• REGENERATION ROOM• CHEMICAL CLEANING TANK AND PUMP• CAUSTIC TRANSFER PUMP• ACID TRANSFER PUMP• NEUTRALISED EFFLUENT DISPOSAL PUMP• CAUSTIC STORAGE TANK• ACID STORAGE TANK• ACID UNLOADING PUMP• CAUSTIC UNLOADING PUMP

ETP is meant to treat all the effluent generated during process of power generation as well as water treatment.

COWS- Central Oil Water Separating System- all the location in the plant having Hazard of oil leakage having sump and transfer pump, the oil and water transfer to COWS where oil and water

get separated.

CMB – Central Monitoring Basin- Drain Water in IBD,CBD , COWS, CT Blow down stored in

basin, temperature and pH of the water monitored up to the norm of DPCC before disposal of the water through pump at the

downstream of the SNH NALA.

DIPOSAL OF SLUDGE

THICKNER -1,2 CSDS -Sludge generated in Clarifier & Cooling Tower transfer to Sludge

Thickener where useable water get separated and concentration of sludge got increase

CENTRIFUGE-1,2 CSDS- Concentrated Sludge get separated from water in sludge Centrifuge and

separated water transferred to stealing chamber for further use and sludge is dispose off at

designated place for disposal.

CHLORINATION PLANT CHLORINE DOSING IS DONE TO REMOVE ODOURNESS AND STOP THE BACTERIAL & ALGAL GROWTH.

IN PPCL WE ARE HAVING TWO STREAMS OF 150 Kg/hr FOR CW SYSTEM AND TWO STREAM OF 10 Kg/hr FOR LIME SOFTENING PLANT AND RODM

CHLORINE ABSORPTION TOWER IS INSTALLED TO ARREST / ABSORB CHLORINE LEAKAGE DETECTED BY LEAK DETECTORS

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