Bengaluru Water Supply and Sewerage Board’s Wastewater

Management

2

BBMP

–

KEY–

MAP

R.R. Nagar

K.R. Puram

Yelahanka

Byatrayanpura

Bommanahalli

MahadevapuraKengeri

Dasarahalli

Core area 245 Sq. Km8 ULB 330 Sq. Km110 Villages 225 Sq. Km

Core Area

BWSSB Service Area 800.29 Sq.KmBWSSB Service Area 800.00 Sq.Km

Wastewater Generation Scenario

Bengaluru is supplied with 1400 MLD of water fromCauvery River and approximately 250MLD water isaugmented from public/private Borewells. 80% of the water supplied will convert in to

wastewater i.e. 1650 x 0.80 = 1320 MLD Out of which Approximately 528 MLD (40%) will flow in V Valley Approximately 528 MLD (40%) will flow in K & C Valley Approximately 264 MLD (20%) will flow in Hebbal

Valley

Wastewater Conveyance Scenario Core area – 245 Sq. Kms. – pipes were laid 45 to 50 years back

(i) Laterals – 3300 Kms – repaired/ replaced/ rehabilitated as and when neededfrom the Board revenue

(ii) Sub Mains/ Mains/ Trunk Sewers – 300 Kms – repair/ replacement/rehabilitation taken up in phases depending upon the receipt of funds from theout side/ external agencies as Board is not in a position fund the projects. As ofnow, out of 300 Kms sub mains replaced/ rehabilitated 51 Kms – Works areunder progress and completed by end of 2017 (70 Kms) and recentlyapproved under AMRUT - 74 Kms costing Rs.500 Cr for which DPR is underpreparation and works are expected to be completed by end of 2019.

(1) EAP – A – completed (33 Kms at a cost of Rs.47 Cr)(2) Hebbal Zero flow – completed (18 Kms at a cost of Rs.45 Cr)(3) EAP – B – rehabilitation work is under progress (70 Kms at a revised cost

of Rs.495 Cr) – expected to be completed by end of 2017(4) EAP – C – proposed at a cost of Rs.642.97 Cr - (EAP-C – 74 Kms – Rs.500

Cr + Pump House at Koramangala Sports Complex and Raisingmain from Pump House to K & C Valley STP – Rs.96.22 Cr +Ranganatha Colony – Rs.46.75 Cr) ) – Approved under AMRUT –DPR is under preparation – expected to be completed by 2019

Wastewater Conveyance Scenario – contd. Erstwhile CMC / TMC area – 330 Sq. Kms. – Added to BBMP in

2006 – there was no UGD network during the formation of BBMP – BWSSB has initiated UGD works under KMRP/ JnNURUM/ State Funding/ BWSSB Funds at a cost of Rs.1200 Cr. (i) Laterals – 2400 Kms.(ii) Sub Mains/ Mains/ Trunk Sewers – 340 KmsNow the 90% of the project is completed and balance will becompleted by end of 2016. Additional lateral network in twoerstwhile CMC/ TMC costing Rs.55 Cr was approved under AMRUT– expected to be completed by end of 2017

110 Village area – 225 Sq. Kms. – Added to BBMP in 2007 – No water supply and UGD facilities – depend upon bore well water supply and soak pits – temporarily discharging into natural drains – BWSSB has initiated the project costing Rs.5100 Cr for water and UGD facility – Now with JICA for funding

Wastewater Treatment Scenario Existing – 14 Nos. – 721 MLD capacity – treating up to 80% capacity due to

connectivity problem – works are under progress – full capacity utilization by end of 2016

Under Constructions – 10 Nos. – 336 MLD capacity – expected to be completed – K & C Valley by March 2017 – V Valley by end of 2018

Recently approved under(1) Mega City Revolving Funds – 4 Nos – 440 MLD capacity – cost

Rs.1209 Cr – KUIDFC has sanctioned 50% of the project cost,balance 50% will be shared by GoK and BWSSB – expected to becompleted by 2019

(2) AMRUT – 5 Nos. – 75 MLD capacity – Cost Rs.190 Cr – expected to becompleted by end of 2018

In pipeline – under(1) Mega City Revolving Funds – 1 STP – 60 MLD capacity – cost

Rs.131 Cr – KUIDFC will sanction 50% of the project cost,balance 50% will be shared by GoK and BWSSB – once approvedexpected to be completed by June 2019

(2) 110 Villages – 16os. – 129 MLD capacity – Cost Rs.387 Cr – awaiting Central/JICA clearance – expected to be completed by 2020

Wastewater Treatment Scenario – contd.

Valley wise treatment plant capacities in MLD

Valley Existing Underconstruction

Approved In pipe line Total

1) Vrishbhavathi 276 105 190 60 631

2) Koramangalaand Challaghatta

305 150 205 90 750

3) Hebbal 140 81 120 39 380

Total 721 336 515 189 1761

100%utilization byend of 2016

Commissioned– K&C Valley byMarch 2017 & VValley by end of2018

Expectedto becompletedby 2019

Expectedto becompletedby 2020

Existing Waste Water Treatment PlantsSl.

No. Location Capacity in MLD Treatment Facility

1. Vrishabhavathi Valley 180 Secondary – Trickling filters

2. K & C Valley I 248 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)

Existing Waste Water Treatment Plants

Sl. No. Location Capacity in MLD Treatment Facility

7. Mylasandra 75 Secondary – Extended aeration8. Nagasandra 20 Secondary -Extended aeration9. Jakkur 10 Secondary – UASB +Extended aeration

10. K. R. Puram 20 Secondary – UASB +Extended aeration

11. Kadabeesanahalli 50 Secondary-Extended aeration

12. Rajacanal 40 Secondary- Extended aeration

13. Cubbon Park 1.5 Membrane

14. Lalbagh 1.5 Extended Aeration + Plate Settlers + UV disinfection

Grand Total 721

10

Hebbal 60 MLD

V Valley 180 MLD

Location Of existing STP’s – 14 Nos of 721 MLD capacity

Kadabeesanhalli 50 MLD

K R Purum 20 MLD

Yelahanka 10 MLD

K & C Valley 248 MLD

Mailasandra 75 MLD

Nagasandra 20 MLD

Raja Canal 40 MLD

Kempambudhi 1 MLD

Cubbon Park 1.50 MLD

Lalbagh1.50 MLD

Madivala 4 MLD

Jakkur 10 MLD

Construction of new wastewater Treatment plants

Name Capacity in MLD Process (Including BNR)

Raja Canal 40 Extended Aeration (EA)

Horamavu Agara 20 Sequential Batch Reactor (SBR)

Nagasandra 20 SBR

Chikkabanavara 5 SBR

Kadugodi 6 SBR

Kengeri 60 Activated Sludge Process (ASP)

K & C Valley 60 ASP

Bellandur Amanikere 90 ASP

Doddabele 20 SBR

Yellemallappa Chetty Kere 15 SBR

Total 336

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Location Of under construction STP’s – 10 Nos – 336 MLD capacity

Raja Canal 40 MLD

Horamavu Agara 20 MLD

Nagasandra 20 MLD

Chikkabanavara 5 MLD

Kodugodi 6 MLD

Kengeri 60 MLD K & C Valley 60 MLD

Bellandur Amanikere 90 MLD

Doddabele 20 MLD

Yelemallappachettykere 15 MLD

Proposed New Treatment Plants

• The wastewater generation will go up in the coming days.• It is expected that the additional wastewater generated will

be about 300 MLD in the above valleys.• To bridge the gap following treatment plants are proposed

(1) V Valley – 150 MLD(2) Doddabele – 40 MLD(3) K & C Valley – 150 MLD(4) Hebbal – 100 MLD

Total – 440 MLD

• Proposal of constructing STP at Bangalore University of 60MLD capacity is yet to be approved

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K.R.PURAM 20 MLD STP

Hebbal100 MLD STP

Doddabele40 MLD STP

K& C Valley 150 MLD STP

Bangalore University60 MLD STP

V Valley 150 MLD STP

Location Of Proposed STP’s

New Treatment Plants approved under AMRUT

• It is proposed to construct 4 treatment plants on theupstream side of Bellandur lake.

• Government of India has approved the proposal in the 5th

Apex Committee Meeting held on 15-12-2015

Sl. No.

Location Capacity in MLD Cost in Rs. Crore

1 Sarakki 5 15.002 Hulimavu 10 30.003 ChikkaBegur 5 15.004 Agaram 35 105.00

5 K R Purum 20 33.00TOTAL 188.00

Valley wise Wastewater treatment capacities

V Valley – 180 MLD

V Valley – 150 MLD

Nagasandra– 20 MLD

Nagasandra – 20 MLD

B University– 60 MLD

Doddabele – 40 MLD

Doddabele – 20 MLD

Kengari – 60 MLDMailasandra – 75 MLD

Kempambudhi – 1 MLD

Existing – 276 MLDUnder Construction- 105MLD

Proposed – 250 MLD

Chikkabanavara– 5 MLD

Quantity of wastewater generation – 528 MLD

Treatment Plants

Total Treatment Plants – 631 MLD

K & C Valley – 150 MLD

K & C Valley – 248 MLD

K & C Valley – 60 MLD

Bellandur Amani Kere –90 MLDKadabeesanhalli – 50 MLD

Lalbagh – 1.50 MLD

Cubbon Park – 1.50 MLD

Madivala – 4 MLD

Treatment Plants

Quantity of wastewater generation – 528 MLD

Existing – 305 MLD

Under Construction – 150 MLD

Proposed – 205 MLD

In Pipe line – 90 MLD

Hulimavu – 10 MLD

Sarakki – 5 MLD

Begur– 5 MLD

Agara – 35 MLD

Total Treatment Plants – 750 MLD

Hebbal – 60 MLD

Rajacanal – 40 MLD

K R Purum – 20 MLD

Yelahanka – 10 MLD

Jakkur – 10 MLD

Rajacanal – 40 MLD

Horamavu Agara – 20 MLD

Yelemallappa ChettyKere – 15 MLD

Kadugodi – 6 MLD

Hebbal – 100 MLD

K R Purum – 20 MLD

Quantity of wastewater generation – 264 MLD

Treatment Plants

Existing – 140 MLD

Under Construction – 81 MLD

Proposed – 120 MLD

Total Treatment Plants – 380 MLD

In Pipe line – 39 MLD

Other initiations of BWSSB for abatement of pollution

Mandatory to install Sewage Treatment Plant (STP)

BWSSB has taken initiative to make mandatory to install STP andreuse the treated water for All residential group housing/ apartments with 20 units and above or

having total built up area of 2000 Sq M including basement Commercial Complexes with total built up area of 2000 Sq M and

above Educational Institutions with or without Hostel having total built

up area of 2000 Sq M and above Township and area development projects with an area of 10 Acres

and above Government Order has been issued on 19-01-2016 and published in

State Gazette on 20-01-2016 BWSSB has given time up to August 2016 to install STP, otherwise 25%

of the water bill will be charged as penalty and for commercial it willbe 50%

Publicity has been given to popularize the initiative

Government Order to install Sewage Treatment Plant

Advertisement to install Sewage Treatment Plant

Abatement of pollution in Bellandur and Varthur Lakes

Varthur Lake Series

Bellandur Lake and Major Inlet PointsNo. Location Flow in

MLD

1 Kempapura main Road 3.00

2 Kempapura 1st Cross 1.00

8 HAL Research Lab 10.00

9 Challaghatta 20.00

10 Nagasandra Slum 1.00

11 Nagasandra Colony 1.00

12 K & C Valley – 30 MLD 30.00

13 K & C Valley – 218 MLD 190.00

14 Ibalur 3.00

15 Agaram 1.00

16 Agaram Pump house 120.00

17 S T Bed 100.00

Total 480.00

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8

9

1011 12

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1415

16

17

Flow from inlet 3,4,5,6 & 7 – no flow – only during rains Flow from inlet 1,2,10,11,14 &15 – KMRP works – completed by end of 2016 Flow from inlet 8 & 9 – work is in progress – completed by end of 2016 Flow from inlet 16 – KMRP works – completed by March 2017 Flow from inlet 17 – Approved under AMRUT – Cost Rs.95 Cr – expected to be completed by 2018

Short Term Providing Sprinkler System Providing Mesh on the sides of SWD Providing ramp to the waste weir to smoothen the flow

in the SWDMedium Term Providing diversion channel for diverting dry weather

flow Long Term Construction of 4 treatment plants of 55 MLD capacity

costing Rs.165 Cr under AMRUT – completed by June 18 Construction of 150 MLD STP at K & C Valley under Mega

City funding – expected to be completed by end of 2019.

Measures taken to abate pollution of Bellandur Lake

Varthur lake is on the down stream side of Bellandur lake

The over flow from Bellandur lake and flow from the catchment between Bellandur lake and Varthur lake joins

The sewage flow from the catchment between these two lakes is going to be addressed in 110 Village project – requires 4 years time once the project is approved – by 2020

As short term plan, sprinklers are deployed to reduce the foam formation in the wasteweir

Measures taken to abate pollution of Varthur Lake

Thanks