supply and delivery of spare parts at boosting station-ii, rana paschim ramnagar water treatment plant under south 24 parganas mechanical division, phe,dte.-- 1 n.b:-all quoted rates are inclusive of gst @ 18% + cess @ 1% 2 supply, delivery of membrane element for ro unit, capacity 2000 lit/hr. suitable for installation in ro vessel diameter 8 & length 40. as per following specification:- a) permeate flow: - minimum 10000 gpd (3.75 m³ /d) b) salt rejection :- (99.5% minimum) c) configuration : - spiral wound d) membrane polymer:- composite polyamide e) nominal membrane area:- minimum 365ft² (33.9m²) f) maximum applied pressure:- above 450 psi g) maximum operation temperature :- not above 122°f (50°c) h) ph range, continuous (cleaning) :- 2-11 (1-13)* i) maximum feed water turbidity :- upto 1.0 ntu j) maximum feed water sdi (15 mins) :- upto 5.0 k) maximum feed flow:- 75 gpm (17.0 m³ /h ) l) minimum ratio of concentrate to permeate flow any element : 5.1 maximum pressure drop for each element 10psi (make: hydranauitcs / dow / ge / any other approved phe) 3 installation and commissioning of ro unit. capacity 2000 lit/hr. suitable for ro vesel diameter 8 & length with through checking & testing complete. 4 supply and delivery of chemical (nahco3) dosing pump 10 lph for wtp. ( approved make) 5 supply and delivery and storage including changing of 2 mm to 6 mm size activated carbon having iodine value about 600 at ro plant baruipur. 6 supply, delivery and storage including changing graded gravel of following size: bottom layer : 3/4 - 1/2 middle layer: 1/2 - 1.4 top layer :1/4- 1/8 7 micron cartridge filter for ro feed – 5 micon20” long for wtp (jumbo woundtype) ( approved make) 8 micron cartridge filter for after ozone – 5 micon20” long for wtp (slimwoundtype)( approved make) 9 micron cartridge filter after uv– 0. 1 micon20” long for wtp (spun cartridge) ( approved make) 10 micron cartridge filter– 0. 2 micon20” long for wtp (pleated cartridge) ( approved make)