water conservatio rjpc 20032012

7/28/2019 Water Conservatio RJPC 20032012

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RESERVOIR

65000 x 2CLARIFIER

CHLORINE ALUMLIME

BLOWDOWN

GRAVITY

FILTERMUWP RWP

PROCESS FLOW CHART-JHANOR

FILTER

WATERSUMP

DMPLANT

CT

MAKE UPCLARIFIED WATER TANK

DRINKING

WATER

SOFTENING

PLANT

PRESSURE FILTER

HVAC System Steam generationGT Injectio


4/28

JHANOR-GANDHAR

WATER CONSERVATION MEASURES

ZERO-DISCHARGE OF:

TREATED SEWAGE FROM PLANT &

TOWNSHIP.

GRAVITY & PRESSURE FILTER BACKWASH

EFFLUENTS.

CLARIFIER BLOW-DOWN EFFLUENT.

BOILER BLOW DOWN WATER


5/28

JHANOR-GANDHAR

Gr.Filter BW

WHRB Blow

Down

STP

Township

PlantGardening/

drain

Sludge

Sludge Pit

Clarifier

under flow

Pr. Filter BW

SupernatantSump Drain

ETP

CT Basin


DAILY SAVINGS

OF 300-500M3

OFFRESH WATER

Clarifiedwater


6/28

Water Consumption Reduction measures

Re-use of treated sewage water for

horticulture purpose:

The treated sewage from STP is utilised for

horticulture purpose & thus reducing therequirement of fresh water.

Operating CW system at higher COC:

Earlier the project operated the CW system as

per the design COC of 4.0 To reduce the water

consumption, the project is now operating the

CW system with higher COC of about 4.3 4.5.


7/28

JHANOR-GANDHAR


SAVINGS :

Pumping of fresh water and effluent.

Around 720 M3/day of make up water.

Reduction of effluent by 720 M3/day.

OPTIMIZING COC OF CW SYSTEM FROM 4.0 TO 4.5 :


8/28

MAKE-UP VS COC

A. Increasing the ability of

CW system to hold higher

concentrations of TDS

will increase the COC,and will decrease the CW

Blow down.

B. Cooling tower water

treatment provided by

newer high-bonding

strength ploymers will

achieve higher COC.

RJPC (WR-1)- 2012


9/28

N-Pit Pumps Priming

Fume absorbers-

HCl Tanks

Gardening

Continuous

Flushing in

toilets

Over Flow

Daily Monitoring

JHANOR-GANDHAR

POTABLE WATER CONSERVATION MEASURES

DRASTIC REDUCTION IN POTABLE WATER THROUGH:

PotableWater

Use


10/28

JHANOR-GANDHAR

Potable water consumption during last 4 years

2007-08 2008-09 2009-10 2010-11

Total Potable water 230.34 225.74 211.74 215.29

Townshp_total 186.98 186.53 180.75 182.91

Plant_total 43.36 39.21 30.99 32.38

0.0025.00

50.00

75.00

100.00

125.00

150.00

175.00

200.00

225.00

250.00

275.00

300.00

CONSUMPTION(1000M3)

JGGPP POTABLE WATER CONSUMPTION


11/28

JHANOR-GANDHAR

Potable water consumption during last 4 years

2.12

2.14

2.16

2.18

2.2

2.22

2.24

2.26

2.28

2.3

2.32

2007-08 2008-09 2009-10 2010-11

WaterC

onsumption(lacsM3)

Potable water Consumption

2007-08

2008-09

2009-10

2010-11


12/28

JHANOR-GANDHAR


RINSE WATER RECYCLING- FY 06-07

Separation of rinse water effluent (which is

comparable to raw water) from regenerationeffluent.

Collection of rinse & back wash water

from stream and ACF to Rinse pit. Pumping back to clarifier.


13/28

REGN. O/LRINSE OUTLETSERVICE O/LB/W O/LB/W I/LSERVICE I/L

TO N.PIT

SBA MB

TO STORM

WATERDRAIN

ACF SAC

RAIN WATER FROM DMPROOF

OLD SCHEME FOR DM PLANT

DM

TANK

MODIFIED SCHEME FOR DM PLANT

NEW RINSE

PITTO DM CLARIFIER

TO STORM

WATERDRAIN

ACF SAC

RAIN WATER

FROM DMP ROOF

DM

TANK

TO

N.PIT

SBA MB

NEW HDPE LINE


14/28

SCOPE FOR FURTHER WATER CONSERVATION

Pilot Study for Effluent recycling

A pilot study to know the

feasibility of effluent recycling

was carried out at the station with

CW blow down water.

The CW blow down, approx. 150-

200 M3/hr, which constitutes

about 90% of the plant liquid

effluent was treated with a skid

mounted combined Microfiltration and Reverse Osmosis

unit.

Pilot Study Model

RO SYSTEM


15/28


PROPOSED RO SYSTEM


16/28

JHANOR-GANDHAR

Raw water consumption vs Raw water Intake from river

Raw water

Intake from

river

Raw water

drawl from

Reservoir

Difference in

water drawl

Genera

tion

(MU)

Spec.Raw

water

Consump

tion

(Lit/U)

2008-09 79,62,500 69,62,460 10,00,040 4,150 1.92

2009-10 85,91,484 72,77,257 13,14,227 4,488 1.91

2010-11 77,58,185 65,85,995 11,72,190 4,058 1.91


17/28


WATER BALANCE STUDY DONE

Period Water Level Total waterLoss

Evaporationloss

Un-accountable

loss

(Percolation/

seepage Loss)

FY- Oct 10 3.45 mtr 120 m3/hr 15 m3/hr 105 m3/hr

FY- Jan 10 3.8 mtr 155 m3/hr 15 m3/hr 140 m3/hr

FY-07 3.5 mtr 165 m3/hr 15 m3/hr 150 m3/hr

Reservoir level is being maintained between

2.3 m to 2.8 m to minimize the loss


18/28


WATER BALANCE STUDY DONE

UNACCOUNTED LOSS-120 M3

ESTIMATED EVAPORATION LOSS: 15-20 M3

WHAT ABOUT

100 M3

?


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NET ANNUAL WATER SAVINGs

Present Practices

Zero Effluent Discharge-

1,09,500 m3

Optimizing COC-1,92,720m3

Recycling of Rinse water-

23000 m3

Total water savings=3,25,220 M3/Annum

Potential savings

Eflluent (CW Blowdown)

Recycling by RO-13,14,000

Unaccounted Loss@100m3/hr=8,76,000

Total Potential savings=

21,90,000M3/Annum

RJPC (WR-1)- 2012


20/28

JHANOR-GANDHAR


21/28

RAIN WATER HARVESTING

CAN BE OF TWO TYPES:

Collection and use

Recharging to underground aquifers.

FORMULA FOR RAIN WATER COLLECTIONQUANTITY:

Q = A x C x rain fallQ is in M3

A, the area is in M2, Rain fall is in meters and C is the run-

off coefficient.

JHANOR-GANDHAR

WATER CONSERVATION MEASURES INITIATIVES


22/28

HOW MUCH WATER?

Parameter Value

Total AreaMain Plant, sq.m 14,40,400

Collection area, % 90

Avg. Rain Fall, mm 650

Run off coeff., % 60

Run off Water Qty. M3 5,05,440

Rain fall during Jun- Sep, mm 550

Run off during Jun-Sep, M3 4,20,000

JHANOR-GANDHAR

RAIN WATER HARVESTING INITIATIVES


23/28

From Main plant, around 2.7 lacs M3 ofwater can be collected with:

A 3.0 m height check dam storing

12500 M

3

of water in drain. A pit to collect and pump to reservoir

@ 300M3/hr.

Separate collection of better qualityroof water is being considered.

JHANOR-GANDHAR



24/28

THE DRAIN SYSTEM IN MAIN PLANT:

D1 D2 D3 D4 D5

2.95 m

2.55 m

1.60 m 1.00 m 0.60 m

(L = 725m) (L = 1550m) (L = 3120m) (L

=3120m)

(L =

3120m)

JHANOR-GANDHAR


Sufficient for 15

days requirement

at full

load,amounting to

Rs.16,20,000/-


25/28

JHANOR-GANDHAR


Ground water recharging is being

considered.

Average yearly rain fall of 650 mm.

Area = 50 acre = 2,20,000 sq.M

Around 75,000 M3 of rain water can be used

for aquifer recharging annually.

This qnty. is more than 6 months

consumption of potable water in the colony.

For Township


26/28

JHANOR-GANDHAR


For Township


27/28

WATER BALANCE (M3/DAY)

RAW WATER- 26500

CLARIFIED WATER- 26500

FILTER WATER

5400

SOFT WATER-

100

CT MAKEUP

21000

DRINKINGWATER

700

DM PLANT

4500

MISC. US

200

EVAP.

16800

BLOWDOWN

4200

STEAM CYCLE

400

GT INJECTION

3600


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CONDENSER AUXILLIARYCOOLING

2000M3/HR

Cl2 dosing

Servicewatersystem

Fire Fighting

Blow down

240M3/HR

H2SO4 dosingSide filters

CT

720m3/hr

40000m3/hr

2000m3/hr

MAKEUP

960M3/HR

TREATMENT

CHEMICAL

DOSING

CW SCHEMATIC AT JHANOR

water conservatio rjpc 20032012

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