issues of water conservation in bengallaru_thippeswamy _2013
TRANSCRIPT
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FOCUS ON BENGALURU CITY
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The
Charting our Water Future” looks at four case studies: China,
Brazil (Sao Paulo), India and South Africa. Below is each countries projected water consumption
Country Current
Supply*
Demand in
2030*
China 618 818
Brazil 18.7 20.2
India 740 1500
South Africa 15 17.7
*Billions of meters cubed
e
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5
The challenges before BWSSBa) Diminishing water resources (Arkavathi source) b) Increased Water Demandc) Inequitable distributiond) Water Quality (catchment to consumer)e) Aged Assetsf) High level of NRW (Non Revenue Water)g) Water Securityh) Climate change and it’s impact on water resourcesi) Aged sewer age systemj) Revision of tariffk) New water resources for augmentingl) Capacity building
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PLAN SHOWING THREE SOURCES OF WATER SUPPLY TO
BANGALORE CITY
Across the River
Year of
Commission
ing
Optimu
m
Drawal
Assumed
flow
Arkavathy1896 36
Arkavathy 1933 148 50
Cauvery I stage 1973 135 135
Cauvery II stage 1982 135 135
Cauvery III stage 1993 270 270
Cauvery stage IV
Phase I 2004 270 270
Cauvery stage IV
Phase II 2012 500 215
TOTAL 1494 1075
BEYOND CWSS WHAT NEXT ?
In MLD
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Bruhat Bangalore Mahanagara palika
Jurisdiction map
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Population of Bengaluru has crossed 1.00 croreand is still increaseing very badly
Old resources are completely non dependent ieHessaragatta & TG hally under Arkavathyriver
Water allocation to Bangalore from Cauvery is only 1-85 tmc But GOK has alloted additional 17 tmc from it’sallocation
Ground water situation is very bad , water table depleting 1-2m every year
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Hessarghatta Lake
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Intake Tower
Sheshadri Iyers Volute Siphon
Hesarghatta Aqueduct
Soladevanahalli Pump house
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THIPPAGONDANAHALLI
Water Treatment Plant - T.G. Halli
T.G. Halli Reservoir view
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Shiva Anikat
Intake
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Loss of water from intaketo treatment plant
Loss of water in treatmentprocess
Loss of water intransmission mains
Loss of water indistribution mains (trunk,feeder, distribution,service mains) due toageing, corrosion, bursts,damage, etc.
Loss of water due toillegal connection, metertampering etc
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Tree of water resources recycling
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Categories of wastewater reuse
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BIRDS EYE VIEW OF YELAHNAKA RECYCLING PLANT
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Name & Location of
the plant
Capacity of
the plant
Proposed for which
recycled water to be
used
Status
1. Bangalore Golf
Club
1.00
MLD
Water for Lawns and
other non potable use
Functioning from
last 14 years
2. Lalbagh 1.50
MLD
Water for Lawns and
to replenish water to
the Lalbagh lake
Functioning from
last 7 years
3. Karnataka Golf
Club
1.50
MLD
Water for Lawns and
other non potable use
Functioning from
last 10 years
4. Cubbon Park 1-50
MLD
Water for Lawns of
Vidhanasoudha
Cubbon Park and
other non potable use
Functioning from
last 6years
RECENTLY INSTALLED RECYCLING PLANT AT BANGALORE (UNDER PRIVATE SECTOR)
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Toilet – 26.8%
Clothes Washer – 21.7%Shower – 16.7%
Faucet – 15.7%
Bath – 1.7%
Dishwasher – 1.4%
Leaks – 13.7% Other – 2.3%
Source: Awwa Research Foundation (1999)
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Wash laundry & dishes with full loads
Always turn off running water
Take shorter showers
Eliminate any and all leaks
Reduce the flow of toilets & showerheads
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Report leaking sinks and toilets.
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Zero discharge of sewage into Storm Water Drain In view of various Technical, social, institutions problems, present the
sewage generated in the city is not conveyed to sewage treatment plateven though there is adequate treatment capacity of STP’s inside theBMA area.
K & C Valley STP diffused aeration pump
30 MLD STP at K & C Valley
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1. Inadequate carrying capacity
2. Corroded & damaged sewers
3. Sewers with reverse / flat gradient
4. Sewers not linked to system
5. Sewers not provided in certain areas
6. Sewers displaced during floods
7. Sewers connected to drains directly
8. Manholes damaged for irrigation
9. Manholes overflowing due to blockage by the solidwastes dumped into manholes
10. Manholes and sewers encroached
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Zero Discharge of Raw Sewage into Storm Water Drains
Clean living Environment
Reduction in damaged Assets
Improved water quality in Lakes
Improved Ground Water Quality
Improvement in fish life and aquatic ecology
Improved Aesthetics
Improvement in Public Health & quality of life
Appreciation of property values
Socio-Economic Improvement
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Schematic presentation of an onsite grey water
treatment and reuse system for an individual house
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GRAY WATER
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ALTERNATE SOURCES HAVE TO BE identified such as ;
Reduction of Unaccounted for water
Reuse of waste water (sewage) for potable and non potable uses
Rain water harvesting , micro and macro level
Efficient management of water by utility
Conservation of water by using highly efficient plumbing fixtures by consumers
Industries must embark on water audit
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