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BPCL HOUSING COMPLEX RAINWATER
HARVESTING SYSTEM
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RAINWATER AVAILABLE FOR HARVESTING
Total rooftop and surface area: 13,910 square metres (sq m)
Average annual rainfall in Noida: 792.4 millimetres (mm)
Total Volume of rainwater harvested: 4,446 cubic metres (m
3 ) or 44,50,000 litres
Therefore, 85 per cent of the total rooftop and surface runoff
is being harvested.
WATER SUPPLY SOURCE
The water requirement is met by one bore well located near
the Plant room and is supplemented by municipal supply. On
an average 2,38,000 litres of water is consumed daily for
potable and non-potable purposes.
RAINWATER HARVESTING SYSTEM
Rooftop rainwater harvesting: The rooftop rainwater from the
C1, C2, C3, D1 and D2 blocks is collected in collection chambers
and then through a network of interconnecting pipes, diverted
into different recharge wells. The recharge wells are located
near the parking shed of the C1 block, the lawn near the D1
block and near the Plant room. The recharge wells are of the
size of 3 m x 2 m x 2 m and provided with recharge bores of
150 mm diameter and 16 m depth to facilitate the recharge.
Layers of filtering material like boulders, pebbles and coarse
sand ensures efficient filtration.
Surface runoff harvesting: Surface runoff generated from the
paved area and roads is harvested through two recharge trenches
constructed along the road near the D1 block. These trenches
are 3m x 0.6 m x 0.9 m in size and are provided with two recharge
bores of 150 mm diameter and 16 m depth to facilitate the
recharge.
Similarly, part of rooftop rainwater of the C3 block is collected
into the storm drain and is diverted to a nearby percolation
pit. The pit is 0.6 m x 0.6 m x 0.6 m in size and is provided
with a recharge bore of 150 mm diameter and 16 m depth. Coir
wrapping on slotted pipe and filtering material like pebbles
ensures better filtration of water.
Similar percolation pits provided in the storm drains running
along the eastern boundary wall, takes care of the surface
runoff from the paved areas and roads as well as the overflow
from the overhead tank which takes place throughout the year.
The implementation was completed in May 2002 and the groundwater
level, as in February 2004, was around 17 m below ground level
(bgl).
The total cost incurred: Rs 4.5 lakhs
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Water Quality 2004 |
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For
Details:
Suresh Taneja
Executive Admin –N
Bharat Petroleum Corporation Limited (BPCL),
A-5&6, Sec-1, Noida, (U.P.)
Ph- 0120-2469500, 2469550 (f)
Mob: 9958704331, 9417507906
Email: sureshkt@bharatpetroleum.in |
