Bangalore's Water Supply situation - BWSSB
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This is an excerpt from the presentation made by BWSSB (Bangalore Water Supply and Sewerage Board) detailing the Water Supply situation in Bangalore. The presentation was made in The Water Workshop conducted on 6-Dec-2009, by ApartmentAdda.com for RWAs. More resources from the workshop at: http://apartmentadda.com/blog/dec-6-2009-water-workshop/
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Bangalore's Water Supply situation - BWSSB
- 1. Presentation by BWSSB
- 4. Source of Water Supply
- 5. PLAN SHOWING THREE SOURCES OF WATER SUPPLY TO BANGALORE CITY WATER RESOURCES TO BANGALORE CITY HESSARGHATA CHAMRAJA SAGAR CAUVERY WATER PLANT
- 6. About Bangalore water supply 1890-1900 1896- Hesargatta WSS – untreated water 1900-1930 Hesargatta – Combined jewel filters 1930-1940 T G Halli Arkavathi WSS-27 MLD 1950-1960 1952-T G Halli – 45 MLD added 1960-1970 1964 – T G Halli – 135 MLD 1970-1980 1974 – CWSS I Stage – 135 MLD 1980-1990 1882- CWSS Stage II – 135 MLD 1990-2000 1993- CWSS Stage III – 270 MLD 2000-2010 2010-2020 2002 – CWSS Stage IV phase I -270 MLD Proposed CWSS Stage IV Phase II – 500 MLD
- 7. Built in 1896 Hessarghatta Lake
- 8. Chamaraja Sagar Reservoir Built in 1933
- 9. Water Treatment Plant at T.G.Halli Built in 1933
- 10. Present Water Supply Projects Year of commissioning Installed Capacity (MLD) Present Supply (MLD) Arkavathy (TG Halli) 1933 149 60 Cauvery Stage I 1974 135 135 Cauvery Stage II 1983 135 135 Cauvery Stage III 1993 270 300 Cauvery Stage IV, Phase – I 2002 270 270 Total Supply 959 900
- 11. CAUVERY RIVER - SHIVA ANICUT WATER RESOURCES TO BANGALORE CITY
- 12. Intake Gate at NBR
- 13. Filter House at T.K.Halli
- 14. Pump House at T.K.Halli
- 15. CWSS - III Stage Pump House
- 16. Pipe Lines
- 24. KaverEcom Customer friendly initiatives
- 33. Total Estimated Cost of Project Items Amount (Rs. Crores) Water Supply Component 1415 Sewerage Component 667 Distribution Improvement Component 249 Management Improvement 25 Slum Development 49 Price Escalation 184 Physical Contingencies 123 Interest During Construction 119 Sub-Total – JBIC Financed Portion 2831 Land Acquisition 61 Administration 202 Taxes and Duties 290 Total Project Cost 3384
- 36. About Bangalore sanitary system 1920-1950 Sewerage system existed 1950-1960 Major sewerage system constructed 1970-1980 K & C Valley wastewater treatment plant ( Primary) & V- Valley STP (Primary) 1980-2000 K & C and V Valley and Hebbal upgraded to secondary 2000-2010 CWSS Stage IV Phase I – 7 treatment plants & sewerage system
- 38. Abstract of sewer statistics >400mm Core Area Sewers less than 400 mm dia Length – 3367 KMs Number of Manholes – 1,21,364 Zones Total Length in Km Existing inside SWD in Km No of manholes in Nos Hebbal 45 9 1650 K&C 113 35 2857 V Valley 85 18 1746 Total 243 62 6253
- 39. Locations of existing STP`s Yelahanka TTP Jakkur STP Hebbal STP KR Puram STP Kadabeesanahalli STP K & C Valley STP Madiwala STP Kempambudhi STP Mylasandra STP V Valley STP & TTP Nagasandra STP Rajacanal STP
- 40. Wastewater Treatment Plants Sl. No. Location Capacity in MLD Treatment Facility Under CWSS I, II, III stages 1. Vrishabhavathi Valley 180 Secondary – Trickling filters 2. K & C Valley I 163 Secondary: Activated sludge process 3. Hebbal Valley 60 Secondary: Activated sludge process 4. Madivala 04 Secondary: UASB + oxidation ponds+ constructed wetlands 5. Kempambudhi 01 Secondary: extended Aeration 6. Yelahanka 10 Activated sludge process + filtration+ chlorination (Tertiary)
- 41. Wastewater Treatment Plants Note : V. Valley 60 MLD Tertiary treatment plant is fed by 180 MLD STP Under CWSS Stage IV Phase I Sl. No. Location Capacity in MLD Treatment Facility 1. Mylasandra 75 Secondary – Extended aeration 2. Nagasandra 20 Secondary -Extended aeration 3. Jakkur 10 Secondary – UASB +Extended aeration 4. K. R. Puram 20 Secondary – UASB +Extended aeration 5. Kadabeesanahalli 50 Secondary-Extended aeration 6. K & C Valley II 30 Secondary - Extended aeration 7. K & C Valley III 55 Secondary – CMAS 8. Rajacanal 40 Secondary- Extended aeration Grand Total 718
- 42. Wastewater Treatment Plants Raw sewage characteristics Raw sewage BOD : Average 350 mg/lit Raw sewage suspended solids: Average 400-500 mg/lit Treated effluent standards ( Secondary) Treated effluent BOD : < 20 mg/lit Treated effluent suspended solids : < 30 mg/lit Tertiary standards Treated effluent BOD : < 5 mg/lit Treated effluent suspended solids : < 5 mg/lit Coliforms : < 2.2/100ml
- 43. – Diffused Aeration System
- 44. – Diffused Aeration System
- 45. – Diffused Aeration System
- 46. – Effluent quality
- 47. – Effluent Quality
- 48. Effluent Quality
- 49. V. Valley Sewage treatment Plant - Recycling Plant
- 50. V. Valley Sewage treatment Plant - Recycling Plant
- 51. V. Valley Sewage treatment Plant - Recycling Plant
- 52. VIEW OF V. VALLEY TERTIARY TREATMENT PLANT
- 53. YELAHANKA Tertiary Treatment plant (Conventional ASP followed with filtration by Chlorination)
- 56. THANK YOU
- 57. Population in BBMP Area Year Population in Lakhs Water Demand in MLD Water supply in MLD Short fall in MLD 2001 53.79 870 540 330 2007 75.00 1219 870 349 2015 88.00 1720 1470 250 2021 100.00 2125 1470 655 2036 125.00 2550 1470 1080