Issues of water conservation in Bengallaru_Thippeswamy _2013


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How unprecedented urbanisation has affected the water availability in the city.

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Issues of water conservation in Bengallaru_Thippeswamy _2013

  2. 2. e 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 Demand in Supply* 2030* China 618 818 Brazil 18.7 20.2 India 740 1500 South Africa 15 17.7 *Billions of meters cubed
  3. 3. The challenges beforeBWSSBa) 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 5
  4. 4. PLAN SHOWING THREE SOURCES OF WATER SUPPLY TO BANGALORE CITY In MLD Year of Optimu Assumed Across the River Commission m flow ing Drawal Arkavathy 1896 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 ?
  5. 5. Bruhat BangaloreMahanagara palika Jurisdiction map
  6. 6.  Population of Bengaluru has crossed 1.00 crore and is still increaseing very badly Old resources are completely non dependent ie Hessaragatta & TG hally under Arkavathy river 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
  7. 7. Hessarghatta Lake
  8. 8. Intake Tower Hesarghatta AqueductSheshadri Iyers Volute Siphon Soladevanahalli Pump house
  9. 9. THIPPAGONDANAHALLI Water Treatment Plant - T.G.T.G. Halli Reservoir view Halli
  10. 10. Shiva AnikatIntake
  11. 11.  Loss of water from intake to treatment plant Loss of water in treatment process Loss of water in transmission mains Loss of water in distribution mains (trunk, feeder, distribution, service mains) due to ageing, corrosion, bursts, damage, etc. Loss of water due to illegal connection, meter tampering etc
  12. 12. Tree of water resources recycling
  13. 13. Categories of wastewater reuse
  15. 15. RECENTLY INSTALLED RECYCLING PLANT AT BANGALORE (UNDER PRIVATE SECTOR)Name & Location of Capacity of Proposed for which Status the plant the plant recycled water to be used1. Bangalore Golf 1.00 Water for Lawns and Functioning from Club MLD other non potable use last 14 years2. Lalbagh 1.50 Water for Lawns and Functioning from MLD to replenish water to last 7 years the Lalbagh lake3. Karnataka Golf 1.50 Water for Lawns and Functioning from Club MLD other non potable use last 10 years4. Cubbon Park 1-50 Water for Lawns of MLD Vidhanasoudha Functioning from Cubbon Park and last 6years other non potable use
  16. 16. Leaks – 13.7% Other – 2.3%Dishwasher – 1.4% Toilet – 26.8%Bath – 1.7%Faucet – 15.7% Shower – 16.7% Clothes Washer – 21.7% Source: Awwa Research Foundation (1999)
  17. 17.  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
  18. 18. Report leaking sinksand toilets.
  19. 19. 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 plat even though there is adequate treatment capacity of STP’s inside the BMA area.K & C Valley STP diffused aeration 30 MLD STP at K & C Valleypump
  20. 20. 1. Inadequate carrying capacity2. Corroded & damaged sewers3. Sewers with reverse / flat gradient4. Sewers not linked to system5. Sewers not provided in certain areas6. Sewers displaced during floods7. Sewers connected to drains directly8. Manholes damaged for irrigation9. Manholes overflowing due to blockage by the solid wastes dumped into manholes10. Manholes and sewers encroached
  21. 21.  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
  22. 22. Schematic presentation of an onsite grey watertreatment and reuse system for an individual house
  23. 23. GRAY WATER
  24. 24.  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