Construction of 5 MLD Capacity STP with Co treatment units at Elamkulam for Kochi Corporation under AMRUT 2 0

OD268832/2025-2026:Clearing and levelling the site by cutting trees (if any), removing grass, boulders etc. to make the site suitable for constructing 5 MLD STP. The cut trees, removed grass, boulders etc. shall be stacked at a suitable place and shall be disposed as per specifications and as per the direction of departmental officers.

OD268837/2025-2026: Design, Construction, Testing and Commissioning of Initial components of STP (Receiving Chamber, Screen Channel with manual coarse screen, mechanical coarse screen, manual fine screen, mechanical fine screen, Grit Chamber and Oil and Grease Trap etc.) with all necessary arrangements for the intended purpose , compatible with the peak designed flow of 10 MLD with RCC sulphate resistant cement M30 or better grade with water leak proofing coating, corrosion resistant TMT steel bars Fe 415 grade or better including diluted septage (maximum 9 trucks per day) with suitable foundation after conducting soil test ( all walls and slab junctions are to be provided with vertical and horizontal haunches) with required retention time and all other physical parameters as per PCB and NGT standards, and all necessary accessories for the satisfactory completion of work including steel ladders, walkway, hand rails etc. and all finishing works like plastering, painting, lettering etc. complete as per specifications in Vol-II of NIT and as per the direction of departmental officers.

OD268841/2025-2026: Design, Construction, Testing and Commissioning of Co-treatment units (Receiving Chamber with manual course screen, Screen Channel with manual course screen, Screw Press, OG Trap, Sludge Handling System, Channel for carrying water from screw press to dilution tank, Dilution tank with suitable cover slab and with suitable arrangements for mixing and homogenization , Arrangement for recycling treated water for dilution of septage with pre-determined dilution ratio with treated water to transfer liquid to screw press, Pump and Pumping main to pump water from dilution tank to receiving chamber of STP etc.) compatible to maximum 9 trucks per day with suitable foundation after conducting soil test, with required retention time to normalize parameters like BOD, COD, TSS etc. as per PCB and NGT standards (Receiving Chamber, Screen Channel, OG Trap, Channel for carrying water from screw press to dilution tank, Dilution tank with suitable cover slab shall be made with RCC sulphate resistant cement M30 or better grade with water leak proofing coating, corrosion resistant TMT steel bars Fe 415 grade or better), septage vehicle travelling yard and discharge arrangements to receiving chamber and all necessary accessories for the satisfactory completion of work, corrosion resistant steel ladders, walkway and hand rails and all finishing works like plastering, painting, lettering etc. complete as per specification in Vol-II of NIT and as per the direction of departmental officers.

OD268835/2025-2026:Design, Construction, Testing and Commissioning of equalization tank with top cover slab with RCC sulphate resistant cement M30 or better grade with water leak proofing coating, corrosion resistant TMT steel bars Fe 415 grade or better, suitable number of manholes with CI manhole covers, corrosion resistant steel ladders for STP compatible with the peak designed flow of 10 MLD including diluted septage (maximum 9 trucks per day) with suitable deep foundation after conducting soil test, with required retention time to normalize parameters like BOD, COD, TSS and volume of inflow etc. with aeration/ agitation arrangements to avoid anaerobic condition and odour and all finishing works like plastering, painting, lettering etc. complete including pumping arrangement (fitting of pump, pipe line works etc.) to pump liquid from equalization tank to MBBR-1, fitting fine bubble air diffusers with EPDM/PTFE+EPDM/any better material, pipelines to supply air and all accessories for the satisfactory completion of work as per specifications in Vol-II of NIT and as per the direction of departmental officers.

OD268846/2025-2026:Design, Construction, Testing, and Commissioning of Moving Bed Biofilm-Reactor- Single Stage (MBBR-1) tank, Moving Bed Biofilm-Reactor- Single Stage Nitrification (MBBR-2) tank, Moving Bed Biofilm-Reactor- Anoxic De-nitrification (MBBR-3) tank, Moving Bed Biofilm-Reactor- Chamber after de-nitrification or final polishing (MBBR-4) tank with all necessary arrangements for the intended purpose of STP compatible with the designed flow of 5 MLD including diluted septage with suitable deep foundation after conducting soil test, with required retention time as described in Vol-II of NIT to reduce parameters like BOD, COD, TSS etc. as per PCB and NGT standards. The MBBR tanks shall be made up with RCC sulphate resistant cement M30 or better grade with water leak proofing coating, corrosion resistant TMT steel bars Fe 415 grade or better and all walls and slab junctions are to be provided with vertical and horizontal haunches, with all finishing works like painting, lettering etc. complete including filling of required volume of MBBR media (high quality non-clogging, non-degradable, and with high attachability carriers as per specifications in Vol-II of NIT, carriers should have minimum specific surface area of 600m2/m3, specific gravity 0.98 or better to float/suspend in water). The bio-film formation and growth of suitable micro-organism using inoculation and seeding must be performed and sustained for the carrier before connecting to the sewage network/ co-treatment unit. Piping arrangements to flow liquid from one MBBR tank to next MBBR tank, fitting pipe and valve for removing sludge, fitting fine bubble air diffusers with EPDM/PTFE+EPDM/any better material, pipelines to supply air and protection arrangement to prevent escaping of MBBR media to next MBBR tank, fitting of agitator in MBBR-3, required bypass arrangements etc. to be done and all accessories for the satisfactory completion of work including ladders, walkway, hand rails etc. as per specifications in Vol-II of NIT and as per the direction of departmental officers.

OD268845/2025-2026:Design, Construction, Testing and Commissioning of Secondary Clarifier (up flow sludge blanket and Plate/tube Settler Type) with RCC sulphate resistant cement M30 or better grade with water leak proofing coating, corrosion resistant TMT steel bars Fe 415 grade or better for STP compatible with the designed flow of 5 MLD including diluted septage with suitable deep foundation after conducting soil test, with required retention time to reduce parameters like TSS, TDS etc. as per PCB and NGT standards, without generating any biological nutrient removal process inside the clarifier, with all finishing works like painting, lettering etc. complete including fixing of SS plates, pipe line works and and all necessary pipe grid arrangements at the bottom to assist coagulation and dispension to develop sludge blanket at the mid height and flow channels, plate settler supporting structures at the top including all sludge removal system etc. complete. Necessary earth cutting shall be done to expose the Secondary Clarifier, constructing sludge removing arrangements including footsteps, piping arrangements, ladders, walkway, hand rails and all accessories for the satisfactory completion of work etc. as per specifications in Vol-II of NIT and as per the direction of departmental officers.

OD268833/2025-2026:Design, Construction, Testing and Commissioning of Filter feed tank with RCC sulphate resistant cement M30 or better grade with water leak proofing coating, corrosion resistant TMT steel bars Fe 415 grade or better and all walls and slab junctions are to be provided with vertical and horizontal haunches for STP compatible with the designed flow of 5 MLD including diluted septage with suitable deep foundation after conducting soil test, with required storing capacity to maintain sufficient suction head for pump, ladders, walkway, hand rails etc. including all finishing works like painting, lettering, fitting pipelines, pumps and all accessories for the satisfactory completion of work etc. as per specifications in Vol-II of NIT and as per the direction of departmental officers.

OD268844/2025-2026:Design, Construction, Testing and Commissioning of Treated Water tank with RCC sulphate resistant cement M30 or better grade with water leak proofing coating, corrosion resistant TMT steel bars Fe 415 grade or better and all walls and slab junctions are to be provided with vertical and horizontal haunches for STP compatible with the designed flow of 5 MLD including diluted septage, with suitable deep foundation after conducting soil test, with required storage capacity to provide required treated water for diluting septage and re-use of water etc., with all finishing works like painting, lettering etc. complete including fitting pipelines, pumps etc. as per specifications in Vol-II of NIT and as per the direction of departmental officers.

OD268848/2025-2026:Design, Construction, Testing and Commissioning of Sludge Sump with suitable cover slab with RCC sulphate resistant cement M30 or better grade with water leak proofing coating, corrosion resistant TMT steel bars Fe 415 grade or better and all walls and slab junctions are to be provided with vertical and horizontal haunches and facility for gas trapping for STP compatible with the designed flow of 5 MLD including diluted septage with suitable deep foundation after conducting soil test, with required retention time and storage capacity, with suitable pump for sludge transfer to sludge thickener etc., with all finishing works like painting, lettering etc. complete and all accessories for the satisfactory completion of work as per specifications in Vol-II of NIT and as per the direction of departmental officers.