50 m (across the river) x 25 m (along the river) resting on 13 nos. 1200 mm dia and 12 nos. 1000 mm dia piles
Suction Main
3 nos. 1600 mm dia 106 m long each. Level of bell mouth : minus 4.67 m GTS (compared to lowest low water level of minus 2.22 m GTS.)
Raw Water Pump House
within CESC Southern Generating Station compound for providing potential energy to enable raw water to reach the treatment plant through the rising main
Cost
Rs. 7.3 Crore
Pump House
Length 24.3 m; Width 17.0 m; Height 19.6 m (10.7 m below ground and 8.9 m above ground)
Pumping Machinery
3 working + 2 standby pumps :
5 nos. Radial Flow type. Pumping head 27 m (water column). Pumping rate 5210 cum/hr each
Motors : 5 nos 500 KW each
Rising Main
for conveyance of raw water from Raw Water Pump House to Water Treatment Plant
Cost
Rs. 13.5 Crore
Pipe Material
Glass Fibre reinforced Plastic
Pipe Dia
1600 mm
Length
3.6 km
Water Treatment Plant
Production capacity : 12000 cum/hr (60 million gallon per day)
Cost
Rs. 19 Crore
Flash Mixers
for mixing coagulants and disinfectants with raw water
4 nos.
Size 3.75 m x 3.75 m x 5.0 m (depth) each
Detention time : 60 seconds;
Agitation : Electrically driven paddles
Clariflocculators
for flocculation and sedimentation of particles in suspension 4 nos.;
Size :21.5m dia (flocculation zone), 56.7 m dia (sedimentation zone) each;
Detention time : 30 min + 3 hr Surface loading rate : 35 cum/day/sq.m.
Filter beds
for filtration of clarified water 16 nos. Rapid sand gravity type
Size : 1 3 m x 1 1 m each
Media depth : Gravel 525 mm; Sand 625 mm
Chlorinators
For two stage disinfection
Pre-chlorination of raw water : @ 60 kg/hr - 2 nos.
Post-chlorination of filtered water : @ 1 2 kg/hr - 3 nos.
Clear Water Pump House
for providing potential energy to convey potable water from 18 million gallon Clear Water Reservoir to the consumers
Cost
Rs. 6.7 Crore
Pump House
Length : 34.9 m; Width : 12.7 m; Height 15.57 m (6.22 m below ground and 9.35 m above ground)
Pumping Machinery
3 working + 2 standby pumps
Pumps : 5 nos. Axial flow type
Pumping head : 50 m (water column)
Pumping rate : 4000 cum/hr each
Motors : 5 nos. 750 KW each
