Action taken by BWSSB in preventing pollution of Lakes
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Action taken by BWSSB in preventing pollution of Lakes

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Action taken by BWSSB in preventing pollution of Lakes Action taken by BWSSB in preventing pollution of Lakes Presentation Transcript

  • Action taken by BWSSBin preventing pollution of Lakes
  • Bangalore Valley System Well defined valleys – 4 Major valleys  Koramangala  Challaghatta  Hebbal  Vrishabhavathi – Minor valleys  Arkavathi, Kathriguppe and Kethamaranahalli (Vrishabhavathi Valley)  Taverekere (Koramangala valley)
  • BANGALORE’S CASCADING LAKES SERIES
  • Reasons for pollution of Lakes Un planned growth of city Un sewered pockets such as slums and erstwhile CMC areas Damage of main sewers Blockages and overflows in the sewer system Direct letting out of raw wastewater into storm water drainage system from un-sewered as well as sewered pockets Lack of adequate infrastructure facilities Dumping of solid waste within the drainage zones
  • Sewerage management in Bangalore Facts Total sewage generated in Bangalore – 1000 MLD Sewerage connections – 8 Lakh Sewerage network Laterals (< 300 mm dia) – 3367 Kms Trunk Sewers (>300 mm dia) – 302 Kms Number of plants – 14 Sewage treatment capacity – 721 MLD Average Present treatment – 453 MLD
  • Measures for abating Lake Pollution1) Replacement/ Rehabilitation/ Up gradation of old sewerage net work – Laterals and Trunk sewers in core city2) Creation of New Sewerage Net Work  Erstwhile CMC area – 2300 Kms  110 Villages – 2000 Kms Total – 4300 Kms3) Creation of Additional Treatment capacity to treat wastewater produced in the new areas
  • On going projectsEnvironmental Action Plan – A Replacement and Rehabilitation of existingsewers Total length – 33 Kms Cost – Rs. 47 Crores under NRCP Work is completed
  • On going projectsEnvironmental Action Plan – B Replacement and Rehabilitation of existing sewers Total length – 70 Kms Taken up under 8 packages Cost – Rs. 176 Crores under JnNURM & JICA Project period 2010-2013
  • On going projectsZero Flow in Hebbal drainage zone Length – 19 Kms Taken up under 3 packages Cost – Rs. 35 Crores under BWSSB funds & Mega city funds Project period 2010-2013
  • On going projects Providing UGD Facilities to 8 ULBs in BBMP area• Estimated Cost : Rs. 1098.15 Crore• Amount put to bid : Rs. 966.21 Crore• Awarded Cost : Rs. 1191.79 Crore• Funding : JnNURM - World Bank• Project Period : 4 Years• Length of pipeline to be laid : 2300 Kms• Number of packages : 24
  • On going projects - progress Sl ULB’s Total Pipe Progress Percentage CompletionNo. laying Qty achieved in Date to be Kms achieved in Kms1 Yelahanka CMC 60.28 57.82 95.92% Feb-132 Byatarayanapura CMC 468.81 269.46 57.47% Feb-143 Mahadevapura CMC 357.11 155.81 43.63% Sep-154 Krishnarajapuram CMC 314.85 246.91 78.42% Feb-145 Bommanahalli CMC 466.91 260.84 55.86% Feb-146 Rajarajeshwarinagar CMC 117.22 78.37 66.85% Feb-147 Kengeri TMC 57.62 14.1 24.47% Sep-148 Dasarahalli CMC 470.92 374.61 79.54% Feb-14 TOTAL 2313.72 1457.91 63.01% Sep-15
  • Future projects Construction of new treatment plants 11 Numbers under JICA assistance 339 MLD Capacity with nutrient removal treatment process 300 MLD plant at V Valley at a cost of Rs. 396 Crore Environmental Action Plan – C Cost – Rs. 360 Crores Length – 109 Kms Water supply and Sanitation to 110 Villages Awaiting clearance from Central Government
  • Treatment plants proposed under CWSS Stage IV Phase IIName Capacity in MLD Process (Including BNR)Raja Canal 40 Extended Aeration (EA)Horamavu Agara 20 Sequential Batch Reactor (SBR)Nagasandra 20 SBRChikkabanavara 5 SBRKadugodi 6 SBRKachohalli 3 Membrane Bio – ReactorKengeri 60 Activated Sludge Process (ASP)K & C Valley 60 ASPBellandur Amanikere 90 ASPDoddabele 20 SBRYellemallappa Chetty Kere 15 SBRTotal 339
  • Quantity of used water treated in the existing treatment plants Average daily inflow in ML Month 2006 2007 2008 2009 2010 2011 2012January 198.89 246.07 210.01 307.00 303.28 271.98 259.98February 233.55 247.32 216.15 316.33 318.15 251.02 277.56March 236.92 234.59 264.28 313.87 330.55 261.97 275.28April 269.88 264.22 305.91 277.75 276.15 274.92 270.90May 310.17 276.99 294.20 251.55 323.67 251.50 249.71June 224.34 299.24 304.44 244.93 307.66 279.12 285.55July 245.12 289.05 278.76 236.87 308.70 304.51 356.58August 253.33 327.73 301.85 275.66 306.78 285.22 354.27September 295.74 268.33 257.06 292.62 285.64 252.68 356.13October 301.31 247.88 261.78 271.95 297.04 304.74 383.27November 288.76 238.10 264.39 265.12 301.92 309.28 379.74December 245.59 217.67 303.05 269.91 275.20 249.00 384.29Average 258.72 263.18 272.75 276.72 302.88 274.81 320.50
  • Monthly Average inflow to treatment plants in MLDTreatment Plant and capacity January-13 February-13 March-13V Valley 180 MLD 68.17 67.18 74.45Mailasandra 75 MLD 47.14 48.99 52.58Nagasandra 20 MLD 7.24 5.68 7.34Hebbal 60 MLD STP 18.25 34.16 34.16Yelahanka 10 MLD STP 4.28 5.21 5.51Jakkur 10 MLD STP 4.44 4.70 4.91Raja Canal 40 MLD STP 19.00 28.04 39.35K R Purum 20 MLD STP 9.89 12.38 12.18Kadabeesanahalli 50 MLD 27.44 36.43 36.12K & C Valley 218 MLD 144.85 148.09 149.64K & C Valley 30 MLD 28.89 28.81 30.27Lal Bagh 1.50 MLD 1.20 1.08 1.08Cubbon Park 1.50 MLD 1.06 1.25 0.85Madivala 4 MLD 3.79 3.79 3.79Kempambudhi 1 MLD 1.00 1.00 1.00Total - 721 MLD 386.64 426.76 453.22
  • Benefits after the completion of UGD works under KMRPErstwhile ULB Name of the Lake No. of lakesYelahanka Attur, Puttenahalli, Yelahanka, 6 Allalasandra, Jakkur, ShivanahalliBytarayanpura Chikkabanavara, Singapura, 15 Abbegeri, Vidrayanapura, Doddabommasandra, Tindlu, Hebbal, Nagavara, Jakkur, Rachenahalli, Amruthahalli, Hennur, Byrathikhane, Kalkere, Rampura
  • Benefits after the completion of UGD works under KMRP Erstwhile Name of the Lake No. of ULB lakesMahadeva Munekollal, Sadaramangala, 18pura & K R Bhattrahalli, Vengeankere,Purum Ramamurthy Nagar, Basavapura, Yellemallappa Chetty, Kaggadasapura, Vibhuthipura, Varthur, Mahadevapura, Ganghadhar, Doddakundenahalli, Kundenahalli, Rajupallya, Benniganahalli, Sigehalli, Siddapura
  • Benefits after the completion of UGD works under KMRP Erstwhile Name of the Lake No. of ULB lakesBommana Jaraganahalli, Chunchanaghatta, 16halli Puttenahalli, Kothunur, Arekere, Hulimavu, Madivala, Agaram, Varthur, Begur, Chikkabegur, Singasandra, Kadagi Singasandra, Somasundra palya, Garvibhavpalya, HosapalyaR R Nagar Mallathahalli, Hosakere, Kengeri, 5& Kengeri Dubasapalya, Halgevadrahalli
  • Benefits after the completion of UGD works under KMRP Erstwhile Name of the Lake No. of ULB lakesDasarahalli Dasarahalli, Doddabidrakallu, 10 Herohalli, Laggere, Shivapura, Pillappakatte, Bagalkunte, Mallasandra, Chikkabanavara, Nelegadaranahalli Total 70