PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
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ii) Agitator drive comprising electric motor coupled to agitator shaft<br />
through speed reducing gear, complete with couplings and motor<br />
starter. The details are: 1 set.<br />
4. Clarifier-cum-flocculator<br />
i) MS fabricated bridge rotating round central pivot and resting on three<br />
carriages on flocculator walls; carriages running on light rail track<br />
fixed to the top flocculator and clarifier walls.<br />
ii) Sludge scraper assembly under slung from bridge sweeping entire<br />
clarifier and flocculator area.<br />
DTS : Detailed Tender Specification. Page 235<br />
1 no.<br />
1 set.<br />
iii) Bridge drive comprising electric motor driving bridge through speed<br />
reducing gear unit and chain and sprocket transmission to wheel axle. 1 set.<br />
iv) Flocculator paddle assembly of MS cross arms holding MS plate<br />
blades, arms fixed to MS vertical shaft, shaft suspended from special<br />
bearing assembly resting on bridge.<br />
3 sets.<br />
v) Flocculator paddle drive comprising electric motor coupled through<br />
speed reducing gear box and pulley V-belt to vertical paddle shaft.<br />
The details are: 3 sets<br />
vi)<br />
Central pivot assembly of CI with radial and thrust bearing and cable<br />
duct.<br />
vii) Current transfer slip ring unit at central pivot and one carriage on<br />
clarifier wall.<br />
viii) 300mm CI sludge pipe for desludging, from sludge collecting pit<br />
inflocculator floor to common sludge well, with 300x300x150 tee at<br />
end in sludge well; main end of tee fitted with 300mm CI sluice<br />
valve, extended spindle, head stock and hand wheel and branch of tee<br />
fitted with 150mm CI sluice valve, extension spindle and pneumatic<br />
cylinder, pilot valve and electrical autotimer activator.<br />
ix) Constant bleed arrangement comprising 50mm GI piping with 50mm<br />
GM valve<br />
x) 80mm CI cable pipe from outside clarifier below floor, to central<br />
shaft.<br />
5 Filters.<br />
i) Inlet penstock 400mm C.I. circular with rising spindle operated by<br />
pneumatic cylinder, complete with air connection piping to control<br />
console.<br />
1 no.<br />
1 no.<br />
1 range<br />
1 range<br />
1 range.<br />
6 nos.<br />
ii) Inlet wall pipe C.I. 400mm flanged and plain end. 6 nos.
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