REPAIR/ MAINT OF SEWAGE TREATMENT PLANT AT AF STN TUGHLAKABAD

Supply and Fix in replacement of Single phase preventer 6 wire, 415V suitable for pumps starter as per ground reqirement, complete all as specified & directed.

Material and Labour in replacement of Power contactor 3 pole Type CN5 50 AC upto 50 Amp rating complete all as specified and directed.

Supply & fix in replacement of manual overload relay (Manual reset) relay range 45-75amp suitable for direct mountimg complete all as specified and directed.

Supply only in replacement of Stequa 411 AE Refill plastic cylindrical sealed disposable sanitiser refill containing solid chlorine for disinfection of drinking water , water with arrangement for controlled release of disinfectant in water , suitable for operation through recommended dosing system. Replacement indcation visual and weight variation water contact orfice design, sealed when dry, exposed upon immersion, operation type , non contact, non inhalatory, cylinder dia 2.5 inches + 0.5 inches , cylinder height, minimum 10.0 inches complete all as specified and directed. Make : As compatible with existing system.

Material and Labour for cleaning and desiIting the sewage well of capacity ,dewatering the complete well,of 100 to 125 Cum removing all the deposited sludge, soil and other material from the well including bailing / pumping out muddy water from the well by manually or by providing suitable pump sets from bottom level of well, scrapping out the scales / deposits from inner surface of the well throughly, washing with bleaching powder and soda ash, cleaning / bailing out settled materials completely by any means and removing sludge to a distance up to 3 km out side of defence land limit and dispose off in low lying area including dewatering as required. Note:-(i) Contractor is to arrange own diesel pump, T&P etc for cleaning purpose and minor spares and consumable like small screws, washers, cleaning agents consumables etc is deemed to be included in the cost, the unit rate quoted deemed to be include all safety precautions to be taken while working in Lift well. (ii) The accumulated/deposited sludge after drying shall be disposed off out side the defence land to a distance exceeding 1.5 KM and not exceeding 5.00 KM from the Lift well cost of which shall be deemed to inclusive in the quoted rate and nothing extra shall be paid on this account. (iii) Before commencement of work, necessary arrangement for disposal of sewage/sludge be made and work to be carried out in fast pace by deploying more man power at lift well in order to complete the work at the earliest.

Supply only Calcium based granule Chlorine (calcium hypochlorite) having chlorine content upto 68% disinfect for water treatment complete all as specified & directed.

Material and Labour for replacement of Unsv MBBR Media from the tank and supply of filling Fresh media of MBBR Media in the main reactor as specified of existing /suitable Make with the following specificatios:- (a) Effective surface area of media Approx - 400 Sqm/Cum (b) Mesdia ht Approx - 15/10 mm (c)Media dia Approx- 22 mm (d) Weight per unit surface area approx -22 mm (e) Voidage - >093 gm/Cucm (g) Media fill Range - 25-55% of volume

Material and Labour for replacement of Hybrid Bio-Cultured (Synthetic Bacteria) suitable for STP 250/300 Cum/day all as specified and directed.

Material and labour for replacement of activated carbon IV 1000, granular type complete all as specified and directed.

Supply and mixing of Dewatering Poly Electrolite 100 % Purity complete all as specified and directed. Make : ION Exchange/Rayal Seema/Aqua/Thermax