We experienced an action-packed Water Workshop on 21-June, Saturday, in Bangalore. The 70+ strong crowd had forward thinking Management Committee Members, Leading Experts in Water Supply, Chief Engineer of BWSSB (Bangalore Water Supply and Sewage Board) and MLA of Karantaka Assembly, in-charge of Bangalore.
A Presentation by Mr. T. Venkataraju, the Chief Engineer of BWSSB (Bangalore Water Supply and Sewage Board), on Water Workshop for Apartment Complexes was organized by ApartmentADDA.
Topics Covered -
Apartment Management: Water management - Overview of Water Supply
Apartment Management: Water management - Present Status and Statistics
Apartment Management: Water management - Treatment Plants in Bangalore
Apartment Management: Water management - Water supply to future apartments
Apartment Management: Water management - Treatment of water
Apartment Management: Water management - Rain water harvesting
To get details about Water workshop,check the link here :
http://apartmentadda.com/blog/blog/2014/06/25/banish-water-insecurity-workshop-on-21-june/
Better Apartment Management: Water Management - Status of Water in Bangalore - Presented By BWSSB
1. Status Of Water Supply
Bangalore Water Supply and Sewerage Board
Workshop for Apartment Complexes
21-06-2014
By
T.VENKATARAJU
ENGINEER – IN – CHIEF, BWSSB
PRESIDENT, IWWA
PRESIDENT, BJAS
Presented at Workshop conducted by:
5. The first piped water supply system in Bangalore was started
in 1896 from Hesaraghatta lake built across River Arkavathi.
Water supply was managed by City Corporation
Water supply was augmented in the years 1933, 1957 and in 1964 in
stages up to 135 MLD from Chamaraja Sagara Reservoir built across
River Arkavathi at T.G.Halli on down stream of Hesaraghatta situated
about 26KM to the West of Bangalore.
Supply from Hessargatta and T.G.Halli reservoirs are completely
stopped
Now, Cauvery is the only major source of water supply to the city
1280 MLD of water is now supplied to Bangalore. Water from bore
wells also supplement part of the requirement.
Overview of Water supply
Presented at Workshop conducted by:
9. Cauvery water Pumping Head from
TK Halli to Bangalore : 1500 ft – 475 m
Source of Water Supply
Presented at Workshop conducted by:
10. Projects
Year of
commissioning
Installed
Capacity
(MLD)
Present
Supply
(MLD)
Arkavathy (TG Halli) 1933 145 0
Cauvery Stage I 1974 135 145
Cauvery Stage II 1982 135 145
Cauvery Stage III 1993 270 330
Cauvery Stage IV,
Phase – I
2002 270 305
Cauvery Stage IV,
Phase – II
2012 500 400
Total Supply 1455 1325
Present Water Supply AS ON 20-6-2014
Presented at Workshop conducted by:
11. Geographical Area : 29 sq. kms beginning of
the century;
Expanded to 800 sq. kms by 2007
Population : 1.63 lakhs in 1901 to
about 85 lakhs in 2011(Estimated
10 Million in 2014)
Major source of water –River Cauvery is situated at a
distance of 100 kms.
Water pumped to Bangalore from river cauvery against
a total head of 500 mts. in 3 stages
Statistics of Bangalore
Presented at Workshop conducted by:
12. Core area 245 Sq. Km
8 ULB 330 Sq. Km
110 Villages 225 Sq. Km
Divisions 9
SubDivns 30
Service Stations 110
BBMP Area 800 Sqkm
Presented at Water Workshop
13. Present Population as on 2014 : 10 Million
Present Demand : 1425 MLD
Present Supply : 1325 MLD
Water deficit : 145 MLD
The Per Capita Supply : 110 to 120 ltrs
No. of Connections : 7.97 Lakhs
No. of Reservoirs in the city : 52
No. of Booster Pumping Stations : 62
Power charges per year : Rs. 375 Crs
Service area provided with supplies : 500 Sq.Km.
Balance area to be supplied (110 Villages) : 300 Sq.Km.
Cauvery water allocation : 19 TMC utilised.
Additional Allocation : 10 TMC (for 110 Villag)
Present Water Supply Scenario
Presented at Workshop conducted by:
14. Present Tertiary Treatment Status
Particulars Quantity in MLD
Number of TTPs 4
Total installed capacity
74
Present treatment 24
Supply of tertiary treated
water 6
Tertiary Treated effluent
flowing in to valley 18
Presented at Workshop conducted by:
15. Tertiary Treatment Plants
Tertiary Treated water can be used for
Landscape Irrigation
Toilet Flushing
Floor washing
Construction Purposes
Air conditioning
Cooling purposes
Presented at Workshop conducted by:
16. Tertiary Treatment Plants
Tertiary Treated water is supplied to
Bharath Electronics Limited, Defense, ITC
Bangalore International Airport Ltd.
Arvind Mills
Various developers for construction purposes
Kempambudhi Park
Presented at Workshop conducted by:
17. Present Water supply to Apartments
No of apartments supplied with water : 12997
No of tenements (Flats) : 211749
Tariff - Flat rate : Rs. 19/KL
Sewage cess : MinRs.100/flat
Type of meters : EM/ AMR
Presented at Workshop conducted by:
18. Water supply to future Apartments
Conditional NOC are being issued towards future
development of apartments.
Apartments have to make their own arrangements for water
and wastewater disposals.
Entire BBMP limits are expected to be provided with
Cauvery water supply only by 2022.
No more fresh water augmentation from Cauvery source
beyond 2022.
It is mandatory for all Housing blocks having more than 5o
apartments to provide for on site waste water treatment
and its reuse for secondary purposes.
Providing RWH facilities both for reuse and recharge are
mandatory.
Presented at Workshop conducted by:
19. Water supply to future Apartments
On site waste water treatment shall be effective and fit for
reuse.
Several kinds of treatment facilities are available in the
market and should be chosen with proper care depending
on end use.
Considering the likely future water scenario treatment
options should get top priority for better beneficial uses.
Effective Operation and maintenance of waste water
treatment plants in various apartment complexes is a major
area of concern particularly after handing over to the
owners association.
Unless more of reuse is put into practice situation would be
grim.
Presented at Workshop conducted by:
20. Water supply to future Apartments
To prevent leakages and loss of water through
underground storage tanks in apartments action may
be taken to provide CFTRI certified food grade GRP
coatings applied on floor and wall surfaces which
would make tanks leak proof.
Apartment complexes less than 50 tenements may try
to adopt non power based treatments (which are very
primitive by nature) to prevent pollution of water
bodies.
Presented at Workshop conducted by:
21. GRP Lining to surfaces of water tanks
Presented at Workshop conducted by:
22. Non power based primitive treatment
Presented at Workshop conducted by: