COMPREHENSIVE MAINTENANCE OF SEWAGE TREATMENT PLANT AND CERTAIN ALLIED ITEMS AT SECTOR III UNDER THE AOR OF GE DEOLALI

Cleaning/desludging of raw sewage collection sump of capacity 110 Cum including screening chamber by closing main incoming manhole and pumping out raw sewage to nearest drain by using portable non clog pump set, cleaning of raw sewage sump manually or mechanically using special T&P such as movable sewage cleaning tanker scrapping inside wall and bottom by steel wire brush to remove raw material and transport it outside the STP complex for disposal thereafter, cleaning/washing of interior surafce of underground sump using high grade bleaching powder and lime mixed water complete and writing letters with white paint (date of cleaning and capacity) on black painted surface with synthetic enemel paint. Clear away all vegitation,sapling undergrowth roots etc and trees not exc 30 cm grith up to 5m arround the peripheri of the tank/structure from external wall surface and removing rubbish not exc 50 m. all as specified and as directed all as specified and directed.

Draining out water from Fab- I & II of 69.12 cum capacity each - 02 Nos manually or mechanically taking out existing FAB MEDIA and stacking it carefully at STP complex. Cleaning/desludging of beds by means of scrapping inside wall and bottom by steel wire brush to remove raw material and transport it outside the STP complex for disposal thereafter, cleaning/washing of interior surafce of underground sump using high grade bleaching powder and lime mixed water including the following :-

(a) Grit Chamber of 3.41 cum capacity

(b) Stilling Chamber of 2.5 cum capacity

(c) Secondary Clarifier of 71.28 cum capacity

(d) Chlorine Contact Tank of 21 cum capacity