This document provides information on wastewater treatment in Bangalore, India. It discusses Bangalore Water Supply and Sewerage Board's (BWSSB) responsibilities in providing water supply and sewerage systems. It details Bangalore's existing sewer network covering over 1,400 km and 14 wastewater treatment plants with a total capacity of 721 MLD. It also outlines BWSSB's plans to expand treatment capacity to 1,060 MLD under the CWSS Stage IV project. The document concludes by presenting effluent quality standards and current wastewater reuse initiatives in Bangalore.

1. POTENTIAL OF STP’S IN
BANGALORE
By
V. C. Kumar
Executive Engineer, BWSSB

2. Bangalore Water Supply and Sewerage Board
A statutory organization set up in 1964
under the BWSSB Act whose core
functions & responsibilities include :
 Providing water supply & sewerage and
sewage disposal systems
 Ensuring sufficient of domestic water
supply to the required standards.
 Levying & collecting water/sanitation
charges on a no loss/no profit basis.

3. Bruhath Bangalore Mahanagara Palike
Boundaries
Sq.K
m
1
BMA
1306
2
Bruhath Bangalore
810
i) Core Area Sewerage
Catchments
245
ii)7-CMCs & 1-TMC
250
iii) 111 Villages around
Bangalore
315
S.No.
BMRDA
Boundary
1306 Sq. Kms
CDP Boundary
594 Sq. Kms
Core Area
226 Sq. Kms

4. BBMP

5. Source of Water Supply
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6. Source of Water Supply

7. Bangalore Water Supply
1891-1900
1921-1930
1931-1940
1951-1960
1961-1970
1971-1980
1981-1990
1991-2000
2001-2010
2011-2020
1896- Hesargatta WSS – untreated water
Hesargatta – Combined jewel filters
T G Halli Arkavathi WSS-27 MLD
1952-T G Halli – 45 MLD added
1964 – T G Halli – 135 MLD
1974 – CWSS I Stage – 135 MLD
1882- CWSS Stage II – 135 MLD
1993- CWSS Stage III – 270 MLD
2002 – CWSS Stage IV phase I -270 MLD
Proposed CWSS Stage IV Phase II – 500
MLD

8. Present Water Supply
Year of
commissioning
Installed
Capacity
(MLD)
Arkavathy (TG Halli)
1933
149
0
Cauvery Stage I
1974
135
135
Cauvery Stage II
1983
135
135
Cauvery Stage III
1993
270
270
Cauvery Stage IV, Phase – I
2002
270
300
Cauvery Stage IV, Phase – II
2012
500
300
Projects
Total Supply
1459
Present
Supply
(MLD)
1140

9. Wastewater
Generation of wastewater
Year
Quantity in MLD
2006
875
2011
985
2021
1320
2036
1570

10. BANGALORE SANITATION

Bangalore is blessed with undulated terrain having natural
gradient
 Wastewater generated flows out of the city in all the four
directions
 Wastewater generated is collected and conveyed through the
sewerage network to the treatment plants for treatment up to
Secondary level and disposed to the natural course
 BWSSB has setup 14 treatment plants of secondary and
Tertiary level of various capacities all-round the city – 721
MLD Capacity
 Four Tertiary treatment plants of total capacity 73 MLD has
been established and treated water is reused for non potable
purposes

11. ABOUT BANGALORE SANITARY SYSTEM
1920-1950
1950-1960
1970-1980
Sewerage system existed
Major sewerage system constructed
K & C Valley wastewater treatment
plant (Primary) & V- Valley STP
1980-2000 K & C and V Valley and Hebbal
upgraded to secondary
2000-2010 CWSS Stage IV Phase I – 7 treatment
plants & sewerage system
2012 - 2015 CWSS Stage IV Phase II – 11
treatment plants – 339 MLD capacity

13. Core Area Sewerage Net work
Major and Minor Valleys
Hebbal
Valley STP
Hebbal Valley
Area in Sq.Km.
(32)
To Raja Canal
STP
Area in Sq
Kms
(35)
Vrishbhavathi
Valley
(38)
(36)
Koramangala
Valley
(31)
To Mailasandra
STP
Katriguppe
Valley
(16)
Kathariguppe
16
38
35
229
%
$
K-Minor
Valley
%
V-Valley
STP
19
K&C Valley
STP
%
Kempambudhi
Mini-STP
#
Taverekere
Arkavathi
Challaghatta
Valley
37
Vrishabhavathi
Hebbal
Minor Valley-2
(5)
36
Total
Hebbal
Minor Valley-1
(11)
Arkavathi
Valley
48
Koramangala
#
Hebbal
Challaghatta
%
(6)
Tavarakere
Valley
#
(19)
%
Madivala
Mini-STP
Agaram
SPS
Bellandur
Lake
Major Valleys
1 – K & C Valley
2 – V Valley
3 – Hebbal Valley

14. Abstract of sewer statistics < 400mm
Core Area
• 150 mm dia
• 175 mm dia
• 225 mm dia
• 300 mm dia
• Total No. of Manholes
– 1490 Kms
– 450 Kms
– 1600 Kms
– 275 Kms
–1,28,000

15. ABSTRACT OF SEWER STATISTICS
>400MM
CORE AREA
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

16. 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
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)

17. Wastewater Treatment Plants
Sl. No.
Location
Capacity
in MLD
Treatment Facility
7.
Mylasandra
75 Secondary – Extended aeration
8.
Nagasandra
20 Secondary -Extended aeration
9.
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
Grand Total
721
Extended Aeration + Plate Settlers + UV
disinfection

18. Treatment plants proposed under CWSS Stage IV Phase II
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
Kachohalli
3
Membrane Bio – Reactor
Kengeri
60
Activated Sludge Process (ASP)
K & C Valley
60
ASP
Bellandur Amanikere
90
ASP
Doddabele
20
SBR
Yellemallappa Chetty Kere
15
SBR
Total
339

19. Wastewater Treatment Plants
Raw sewage characteristics
Raw sewage BOD : Average 300 mg/lit
Raw sewage suspended solids: Average 400-500 mg/lit
Treated effluent standards ( Secondary)
Treated effluent BOD
Treated effluent suspended solids
: < 20 mg/lit
: < 30 mg/lit
Tertiary standards
Treated effluent BOD
Treated effluent suspended solids
Coliforms
: < 5 mg/lit
: < 5 mg/lit
: < 2.2/100ml

20. Locations of existing STP`s
Yelahanka TTP
Jakkur STP
Nagasandra STP
Hebbal STP
Rajacanal STP
KR Puram STP
Kadabeesanahalli STP
V Valley STP & TTP
Mylasandra STP
K & C Valley STP
Kempambudhi STP
Madiwala STP

21. K & C Valley Sewage Treatment Plant
K & C Valley STP (Activated Sludge Process)
Capacity
163 MLD
Capital cost
602 Lakhs
Installed capacity of power
1475 KVA
Power Charges
50 Lakhs per year
Cost of Man power utilised
25 Lakhs per year
Total O & M charges
75.60 lakhs per year
K & C Valley STP
Capacity
55 MLD additional module
Capital cost
2900 Lakhs
K & C Valley STP (Extended Aeration Process)
Capacity
30 MLD
Capital cost
Lakhs
Installed capacity of power
2700
750 KVA

22. Koramangala And Challaghatta
Valley Treatment Plant – 30 MLD
Plant
Agaram Pump House
K & C Valley treatment plant

23. Koramangala And Challaghatta Valley
Treatment Plant – 30 MLD Plant
Aeration Tank

24. Madiwala Water Reclamation Plant
Name of the STP
Location
:
:
Madiwala STP
Madiwala
Capacity
:
4 MLD capacity
Treatment Process
:
First & Secondary
Year of Construction
:
1998
Capital cost
:
121 Lakhs
Catchment Area
:
Tavarekere
Effluent characteristics
:
BOD < 20m g/L & SS <30 mg/L
Installed Capacity of power
:
35 KVA
Power Charges
:
3.7 Lakhs per year
Cost of Man power utilised
:
10.0 Lakhs per year
Total O & M charges
:
13.7 lakhs per year

25. Madivala Water Reclamation Plant
UASB side view

26. Madivala Water Reclamation Plant
UASB with sludge withdrawal piping arrangement

27. V. Valley Sewage treatment Plant
V. Valley STP (Trickling Filter)
Capacity
180 MLD
Capital cost
Lakhs
1122
Installed Capacity of power
1400 KVA
Power Charges
60 Lakhs per year
Cost of Man power utilised
45 Lakhs per year

28. V. Valley Sewage treatment Plant - Recycling Plant
Effluent Standards
- BOD < 5 mg/ L
- SS < 5 mg/ L
- Turbidity < 2 NTU
V. Valley Tertiary Treatment plant ( Trickling filter followed by
Densadeg and Flopac & disinfectin by Chlorination)
Capacity
Capital cost
60 MLD
3873 Lakhs
Power Charges
84 Lakhs per year
Cost of Man power utilised
37 Lakhs per year
Chemical Charges if any
36 Lakhs per year
Total O & M charges
157 lakhs per year

29. V. Valley Sewage treatment Plant - Recycling Plant

30. V. Valley Sewage treatment Plant - Recycling Plant

31. Kempambudhi Water
Reclamation Plant (Activated
Sludge Process)
Capacity
01 MLD
Capital cost
135 Lakhs
Installed capacity of power
Power Charges
49 KVA
5.0 Lakhs per year
Total O & M charges 5.6 lakhs per year
(including man power)

32. Hebbal Sewage
Treatment Plant
(Activated Sludge
Process)
Capacity
60 MLD
Capital cost
1100 Lakhs
Installed capacity of power
975 KVA
Power Charges
114 Lakhs per year
Cost of Man power utilised
40 Lakhs per year
Total O & M charges
154 lakhs per year

33. YELAHANKA Tertiary
Treatment plant
(Conventional ASP followed
with filtration by
Chlorination)
Capacity
10 MLD
Capital cost
3873 Lakhs
Installed capacity of power 500 KVA
Effluent Standards
Power Charges
84 Lakhs per year
Cost of Man power utilised 37 Lakhs per year
- BOD < 5 mg/ L
Chemical Charges if any
36 Lakhs per year
- SS < 5 mg/ L
Total O & M charges
157 lakhs per year
- Turbidity < 2 NTU
Supplied to International Airport, BEL,
Wheel and Axle and other industries

34. Kempambudhi Water Reclamation
(Activated Sludge Process)
Capacity
1 MLD
Capital cost
135 Lakhs
Installed capacity of power
49 KVA
Power Charges
5.0 Lakhs / Year
Total O & M charges
5.6 lakhs / Year
(including man power)

35. MAILASANDRA STP
(Extended Aeration Process)
Capacity 75 MLD
Capital cost :
5200 Lakhs

36. Kadabeesanahalli STP
(Extended Aeration Process)
Capacity
50 MLD

37. NAGASANDRA STP
(Extended Aeration Process)
Capacity
20 MLD
Capital cost
Rs.1400 Lakhs

38. Jakkur
(UASB Process)
Capacity
10 MLD

39. K R Purum
(UASB Process)
Capacity
20 MLD

40. Rajacanal
(Extended Aeration Process)
Capacity
40 MLD

41. Cubbon Park
(Membrane Process)
Capacity
1.50 MLD

42. Lalbagh Park
(Extended Aeration Process)
Capacity
1.50 MLD

43. Tertiary Treated Water Utilizations
Sl. No.
Consumer
Wastewater
in KLD
1.
International Airport
1000
2
3.
4.
5.
6.
7.
8.
BEL
Wheel and Axle Plant – Railway
ITC Limited
IAF
Aravind Mills
Cubbon Park
Lalbagh
TOTAL
1200
300
300
200
1000
1500
1500
7000
Selling rate - Rs.25/- per KL
Revenue - 4.50 Crores per year

44. Cubbon Park
Tertiary
Treatment Plant

45. RAW SEWAGE AND TREATED WATER
CHARACTERISTICS
Parameter
Unit
Influent
Effluent
Actual
pH
-
6.8 – 8.0
6.5 – 8.0
7.2
BOD
Mg/L
330
<4
<2
TSS
Mg/L
450
<3
<1
Turbidity
NTU
-
<2
0.05
Fecal
Coliform
MPN/
100 mL
nil
BDL
BDL
Coliform
Index
MPN/
100 mL
109 – 1010
2.3
BDL

55. Quality of treated wastewater
Raw Sewage
Treated wastewater