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Designing (aesthetically), Providing, Fabricating Package Water Treatment Plant At The Shop, Transporting To Site, Installing, Testing And Commissioning At The Site, Giving Necessary One Month's Free Test And Trail Run With Guarantee For One Year, Etc. Complete. Prefabricated Package Water Treatment Plant Comprising Following : 1) Rapid Mixing Channel In M.s. Sheets And M.s. Baffle. 2) Flocculator Not Less Than 10 Minutes Detention, In M.s. Prefabricated Box, Flocculation Being Achieved Either By Glass Pebbles Of Graded Size Or Pvc Tetrapod Or Equivalent Arrangement To Ensure Good Floc Formation. 3) Plate Or Tube Settlers Of Not Less Than 30 Minutes Detention In M.s. Prefabricated Box, The Plates / Tubes Mounted In The Settler Basin With Inclination Of Not Less Than 60 Degree To Horizontal. 4) Rapid Sand Gravity Filter In M.s.prefabricated Box With Filter Sand Not Less Than 500 Mm Thick, Supported On False Floor Below With Polypropylene Nozzles Floor Below With Polypropylene Nozzles Spaced At Not More Than 500 Mm Centres In Either Direction. 5) Backwashing, Inlet & Outlet Facilities Shall Be Provided. Air Blowers - Air Blowers Are Not Required For Wtp Having Capacity Less Than And Equal To 3 Mld, For Wtp Having Capacity More Than 3 Mld Air Blowers Capacity Of Delevering 600 Lpm Per Sqm Of Free Air Of Filter Area 0.4 Kg/sqcm At Underdrain (100% Standby) Wash Water Tank Capacity Equal To 2 % Of Designed Quantity Of Filer Water In A Day + 10 %wash Water Pump With 100 % Standby (minimum 3 Hp With All Accessories) Backwash With Water Not Less Than 0.6 Cum/sqm Of Filter Bed Area In Filter Box. Piping Of Outlet Upto Sump 6) Laboratory Equipments 7) External & Internal Electrification 8) Tcl Solution Tank With Mixing, Carrying And Dosing Arrangement With Piping. 9) Gravity Feed Gas Chlorinator With 100% Standby. 10 ) Four Alum Storage Unit 11) Drainage Arrangement 12) Providing Room With Rcc Roof For Office And Lab Space With Necessary Water Supply & Drainage Arrangement & Internal Roads 13) Rcc Sump Of One Hour Cap.and Pump House On It. 14) Internal Road 15) Wire Fencing With Gate For Wtp Premises. 16) All Civil Works For Foundation, Consisting Of Raised Rcc Platform Above G.l. Or Walls In B.b. Masonry Or Ucr Masonry Shall Be Provided As Per Needs At Site. 17) Bypass In The Form Of Pipes Or M.s. Channels Included In The Design, Effecting Bypass Of Such New Tank And Filter Individually Or Both. (limit Upto 5.0 M. From W.t.p. Face) 18) The Entire M.s. Fabricated Tank Provided With Frp Lining (5 Mm Thick) To Inside Face In Contact With Water Epoxy Painting- Two Coats With One Coat Of Primer On Outside. The Thickness Of Plates Employed Shall Not Be Less Than 6 Mm 19) Alum Dosing And Mixing Arrangements To Be Provided In Twin Tanks, Each Of 8 Hours Capacity, Capable Of Importing Does Of 20 Ppm With 5% Solution. The Alum Tanks Provided With A Dose In Steps Of 5 Ppm And Entire Unit Mounted On The Top Of Flocculator / Settler Box, In The Form Of Prefabricated Structure, With Access Platform And Ladder. Alum Boxes With Frp Lining (5 Mm Thick) Inside And Epoxy Paint Two Coats With One Coat Of Primer On Outside. 20) Both Flocculator And Settling Basins Provided With Hopper Bottom With Slope Not Less Than 45 Degrees To The Horizontal Drain Pipes And Valves Provided To Both Flocculator And Settling Basin. 21) Flow Ratings To Conform Following Parameters : A) Velocities In Channels Not To Exceed 0.6 M./second. B) Velocities In Filter Outlet Pipes And Valves Not To Exceed 1 M./second. C) Velocities In Interconnecting Pipe And Controls Not To Exceed 1m./second. D) Backwash With Air : Not Required. E) Backwash With Water : Not Less Than 0.6 M./ Sqm. Of Filter Bed Area In Filter Box. 23) Free Board For All Units Not Less Than 300 Mm 23) Rates As Above Include All Taxes, Octroi And Duties Which Would Be Specific To The Site Locations. Package Water Treatment Plant- 83 Cum/hr. (2.00 Mld)" Gadmudshingi Water Supply Scheme Tal Karveer
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Renovation Of A 15 Mgd North Barrackpore Wtp Along With Replenishment Of 4 Nos Rapid Gravity Sand Filter Media, Boundary.......within North Barrackpore Municipality. Sefaws/w And S/kmda/t-06 Of 2025-26
