National Environmental Engineering Research Institute Tender

1:3:6 (1 cement : 3 coarse sand (zone-III) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level :

1:1.5:3 (1 cement : 1.5 coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources).

Reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level:

Thermo-Mechanically Treated bars of grade Fe-500D or more

Centering and shuttering including strutting, propping etc. and removal of form work for : Slab/floor for lamella clarifier including water tanks.

Foundations, footings, bases for columns.

Supplying and laying of boulder & moorum below floor and plinth including watering, compacting & consolidating in layer not more than 200 mm thick etc. complete as per the instructions of Engineer-in- charge.

Polyethylene water storage tank with cover and suitable locking Arrangement.

Cutting holes up to 30 x 30 cm in walls including making good the same: With common burnt clay F.P.S. (non modular) bricks.

Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, depth upto 1.5 m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m :

All kinds of soil: Pipes, cables etc, not exceeding 80 mm dia

Providing and fixing of HDPE pipe of outer diameter 50 mm of grade PN6.

Providing and fixing of HDPE pipe of outer diameter 40 mm of grade PN6.

Providing and fixing of HDPE electrofusion elbow of 50 mm with sealing agent

Providing and fixing of HDPE electrofusion elbow of 40 mm with sealing agent.

Providing and fixing of HDPE electrofusion Tee of 50 mm with sealing agent.

Providing and fixing of HDPE electrofusion Tee of 40 mm with sealing agent.

Providing and fixing of HDPE electrofusion reducers of 50 x 40 mm for connecting 50 mm and 40 mm dia HDPE pipe with sealing agent.

Providing and fixing of Electrofusion couplers for connecting two 50 mm dia HDPE pipes of grade PN 6 with sealing agent.

Providing and fixing of Electrofusion couplers for connecting two 40 mm dia HDPE pipes of grade PN 6 with sealing agent.

Providing and fixing of Polypropylene ball valve with fixtures for regulating flow through HDPE pipes of OD 50 mm grade PN 6 with sealing agent.

Providing and fixing of Polypropylene ball valve with fixtures for regulating flow through HDPE pipes of OD 40 mm grade PN 6 with sealing agent.

Providing and fixing of Polypropylene non-return valve with fixtures for allowing flow unidirectional through HDPE pipes of OD 50 mm grade PN 6 with sealing agent.

Providing and fixing of Polypropylene non-return valve with fixtures for allowing flow unidirectional through HDPE pipes of OD 40 mm grade PN 6 with sealing agent.

Providing and fixing of HDPE/MS Flange including GI nut bolts and rubber gasket for fixing valves with HDPE pipe of OD 50 mm grade PN 6.

Providing and fixing of HDPE/MS Flange including GI nut bolts and rubber gasket for fixing valves with HDPE pipe of OD 40 mm grade PN 6.

Providing and fixing of water tank connecting PVC nipple 40 mm.

Providing and fixing of water tank connecting PVC nipple 50 mm.

Providing and fixing of Electrofusion service saddle 40 x 1/2", electrofusion tapping tee 40 x 1/2" with coupler & compression fittings for UPVC pipe 1/2" connections.

Design, supply, installation, commissioning & testing with satisfactory test and trial of single phase centrifugal pump, to pump influent water from DMF/GAC to the surge tank and lamella clarifier collection tank to outlet tank with proper covering from rain and water capacity:-12 cum/hr, Duty head - 7 meter, M.O.C - CI, B.H.P:- 1.5, A9 50x50 mm, ISI approved.

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. External work:

25 mm nominal diameter Pipes

Providing and fixing of UPVC FTA brass 25 mm for connecting brass tap with CPVC pipe.

Providing and fixing of brass tap 25mm of nominal bore as approved.

Design, supply and installation of water level controller electronic panel auto run with all protection and G.I fittings set.

Design, fabrication, supply, commissioning & testing with satisfactory test & trial of Lamella clarifier for an influent rate of 12 m3/hr. 1. Flow rate:- 12 m3/hr 2. TSS influent:- 194 mg/lit. 3. Size of lamella:- 2.2 x 3 x 2.4 and as per drawing attached. 4. Outer body- Mild steel plates of 6 mm thickness 5. Lamella plates:- FRP 3 mm of 2 sets of 19 nos at 70 mm spacing, hence total of 38 nos of plates. 6. Horizontal stiffners and vertical stiffners of angle 60 x 60 x 6 mm for the support of plates and sludge hopper. 7. Painting of all metallic parts inside the settler coming in contact with water:- 3 coats of epoxy paint over 1 coat of primer, total thickness- 300 microns. 8. Other component: 1 coat of red lead primer & 3 coats of rust preventing paint, thickness: 200 micron 9. 6 columns of 100 mm diameter for supporting Lamella clarifier. 10. Platform and railing- standard.

Operation and maintenance to be carried out for 1 year. Payment shall be released on monthly basis. Duties during O&M:- Plant to be run 8 hours a day. Adequate helper and operators to be provided for proper plant operation as given- Manpower Requirement- 1. Technician Requirement- 1 nos x 8 hours of work for operating the system. 2. Helper- 1 nos x 1 day a week for pumping and removing out sludge from lamella clarifier. Chemicals Requirement- 1. Hydrogen Peroxide solution (50% w/w) dosing at the rate of 12 ppm with flow rate of 1.92 l/day. 2. Polyaluminium chloride solution at the dosing rate of 6 ppm with the requirement of 576 gm/day. Treated water quality should be monitored by NEERI (random sampling). Equipment maintenance and repair, replacement and maintenance of plants shall be the responsibility of contractor.