NIT NO.11 EE(C)PlantSE(2026-27)

Design, Engineering, Supply, Fabrication, Transportation, Installation, Testing, Commissioning and Trial Run of 50 KLD capacity compact, portable/prefabricated Decentralized Sewage Treatment Plant (DSTP), suitable for above-ground installation, constructed in MS-FRP and based on CPHEEO approved and Proven technology, complete in all respects for treatment of domestic sewage and production of treated water suitable for Flushing, horticulture, landscaping, irrigation and lake replenishment purposes. The plant shall comprise inlet chamber with SS-304 bar screen, Primary Treatment, Secondary Treatment and tertiary treatment, UV disinfection system, treated water electromagnetic flow meter, air blowers, pumps, internal piping, valves, fittings, air distribution network, sludge withdrawal arrangement, structural supports, access ladders, platforms, handrails, electrical control panel with auto/manual operation and all associated accessories required for satisfactory operation of the plant. The system shall be factory fabricated, modular, compact and suitable for transportation, installation and relocation, complete with all interconnections, consumables, fasteners and miscellaneous works. The treated effluent quality at the outlet of the DSTP shall meet the following standards or better: BOD ≤3 mg/L, COD ≤ 20 mg/L, TSS ≤ 3 mg/L, pH between 6.5 and 8.5, Nitrate (as NO₃-N) ≤ 10 mg/L, Phosphate (as PO₄-P) ≤ 2 mg/L and Fecal Coliform = zero, making the treated water suitable for reuse in Toilet Flushing, horticulture, landscaping, irrigation, water body rejuvenation and lake replenishment applications.The scope shall include design, fabrication, loading, transportation, unloading, erection, testing, commissioning, performance trial run and handing over of the complete system in satisfactory working condition. The rate shall include all materials, labour, tools and equipment required for successful commissioning and performance of the plant. Electricity connection and power supply for operation of the plant shall be provided by DJB.

Design, Engineering, Supply, Fabrication, Transportation, Installation, Testing, Commissioning and Trial Run of 15 KLD capacity compact, portable/prefabricated Decentralized Sewage Treatment Plant (DSTP), suitable for above-ground installation, constructed in MS-FRP and based on CPHEEO approved and Proven technology, complete in all respects for treatment of domestic sewage and production of treated water suitable for Flushing, horticulture, landscaping, irrigation and lake replenishment purposes. The plant shall comprise inlet chamber with SS-304 bar screen, Primary Treatment, Secondary Treatment and tertiary treatment, UV disinfection system, treated water electromagnetic flow meter, air blowers, pumps, internal piping, valves, fittings, air distribution network, sludge withdrawal arrangement, structural supports, access ladders, platforms, handrails, electrical control panel with auto/manual operation and all associated accessories required for satisfactory operation of the plant. The system shall be factory fabricated, modular, compact and suitable for transportation, installation and relocation, complete with all interconnections, consumables, fasteners and miscellaneous works.The treated effluent quality at the outlet of the DSTP shall meet the following standards or better: BOD ≤3 mg/L, COD ≤ 20 mg/L, TSS ≤ 3 mg/L, pH between 6.5 and 8.5, Nitrate (as NO₃-N) ≤ 10 mg/L, Phosphate (as PO₄-P) ≤ 2 mg/L and Fecal Coliform = zero, making the treated water suitable for reuse in Toilet Flushing, horticulture, landscaping, irrigation, water body rejuvenation and lake replenishment applications.The scope shall include design, fabrication, loading, transportation, unloading, erection, testing, commissioning, performance trial run and handing over of the complete system in satisfactory working condition. The rate shall include all materials, labour, tools and equipment required for successful commissioning and performance of the plant. Electricity connection and power supply for operation of the plant shall be provided by DJB.

Ultra Filtration (UF) System: Providing, supplying, installation, testing and commissioning of 5 KLPH fully automatic UF System for 50 KLD DSTP, complete with UF feed tank, treated water tank, feed and backwash pumps, 5-micron filters, PVDF UF membranes, SS-304 skid, air scouring arrangement, CEB/CIP system with dosing pumps and tanks, automatic valves, flow meters, pressure gauges, UPVC piping and fittings, electrical cabling and PLC-HMI based automatic controls, including all necessary accessories and interconnections, complete in all respects. Membrane Size- 1800mm x 225mm Make: Qua/Equivalnet, Surface Area - 60 Sq Meter

Ultra Filtration (UF) System: Providing, supplying, installation, testing and commissioning of 2.5 KLPH fully automatic UF System for 15 KLD DSTP, complete with UF feed tank, treated water tank, feed and backwash pumps, 5-micron filters, PVDF UF membranes, SS-304 skid, air scouring arrangement, CEB/CIP system with dosing pumps and tanks, automatic valves, flow meters, pressure gauges, UPVC piping and fittings, electrical cabling and PLC-HMI based automatic controls, including all necessary accessories and interconnections, complete in all respects. Membrane Size- 1800mm x 225mm Make: Qua/Equivalnet, Surface Area - 60 Sq Meter

Design, Supply, Installation, Testing and Commissioning of Online Monitoring System comprising online analyzers/sensors for continuous monitoring of pH, BOD, COD and TSS, complete with sample conditioning unit, data logger, transmitters, communication modules, cables and all accessories required for satisfactory operation. The system shall be integrated with IoT based remote monitoring platform including IoT gateway, cloud connectivity, web/mobile dashboard, alarm notification, historical data logging and report generation facility. The scope shall include all hardware, software, programming, calibration, integration, testing, commissioning and training complete in all respects for successful operation of the system. Make:

Providing, supplying, installing, testing and commissioning of 15 kWp Grid-Interactive Solar PV Power Plant (without battery backup), complete with high-efficiency Mono PERC/TopCon Solar PV Modules, Grid-Interactive String Inverter, Hot Dip Galvanized Module Mounting Structure, DC & AC Cabling, DC Distribution Board (DCDB), AC Distribution Board (ACDB), Earthing System, Lightning Protection System, Generation Meter, Monitoring System and all associated accessories, complete in all respects. The Solar PV System shall be designed to operate the STP and its associated electrical equipment primarily on solar power during daylight hours. During periods of insufficient solar generation and during night hours, the connected load shall automatically operate from the existing utility/grid supply through the Grid-Interactive Inverter without any manual intervention. No battery bank or battery backup shall be provided under this scope of work. The scope shall also include design, fabrication, transportation, installation, testing, commissioning, performance testing, documentation, training of department personnel and handing over of the complete Solar PV System as per MNRE guidelines and the directions of the Engineer-in-Charge.

Providing, supplying, installing, testing and commissioning of complete treated-water pumping and terrace storage arrangement comprising 3 Nos. × 10,000 litres HDPE overhead treated-water storage tanks (Polywell/Supreme/Sintex or approved equivalent), 2 Nos. horizontal centrifugal treated-water transfer pumps (1 Working + 1 Standby) each having minimum discharge capacity of 16,000 litres per hour at 30 metre head (Kirloskar/Crompton/KSB or approved equivalent), complete with suction and discharge manifolds, isolation valves, Electro Magnetic Flow meter , non-return valves, pressure gauges, flexible connectors, tank interconnection piping, overflow, drain and vent arrangements, MS/HDG structural supports, base frame, anchor fasteners and all hydraulic accessories required for pumping treated water from Ground Floor STP to terrace storage tanks and gravity distribution system.The item shall also include complete automatic pumping system comprising pump control panel, 2 Nos. Variable Frequency Drives (VFDs), automatic duty/standby changeover, automatic start/stop operation based on treated-water level, dry-run protection, overflow protection, non-contact ultrasonic level transmitters for ground treated-water tank and terrace tanks, digital level indication (0–100%), PLC/SCADA compatible control logic, internal wiring, interlocking, programming, factory testing, fabrication, loading, transportation, unloading, special lifting/heavy labour arrangement for shifting tanks to terrace level, installation, alignment, hydraulic testing, trial run, commissioning and handing over complete in all respects as per the directions of Engineer-in-Charge.

Providing, supplying, laying, fixing, testing and commissioning of complete treated-water flushing connection for one toilet by disconnecting the existing potable water connection from flushing cistern and providing a separate treated-water flushing connection from the treated-water distribution pipeline, complete with all required CPVC pipes, fittings, unions, tees, elbows, sockets, reducers, adapters, nipples, bends, solvent cement, clamps, supports, anchor fasteners and accessories.The item shall include dismantling of existing flushing connection wherever required, providing new treated-water flushing connection, reconnection to existing flushing cistern, pressure testing, leak testing, flushing of pipeline, identification marking, colour coding of treated-water pipeline, commissioning, trial run and handing over complete in all respects.The work shall be executed in occupied Government office buildings without disturbing normal office functioning and shall include all labour, tools & plants, minor drilling, wall chasing wherever required, fixing over existing wall surface, making good of minor damages, cleaning of work area, transportation, loading, unloading, internal material shifting, floor-wise handling and all incidental works required for successful completion of one treated-water flushing connection.The cost of main treated-water risers, distribution pipelines, valves, flow meters, electrical works, cable works, scaffolding and sign boards shall be measured and paid separately under relevant BOQ items.Complete as directed by the Engineer-in-Charge.

Providing, supplying, installing, testing and commissioning of complete treated-water monitoring, valve and pipe support system for one building, comprising all necessary hydraulic control and monitoring accessories for efficient operation of the treated-water distribution network, including 50 mm Electromagnetic Flow Meter (EFM) with rubber-lined flow tube, integral digital display, instantaneous flow indication, cumulative totalizer, minimum accuracy ±0.5%, flanged type, complete with 4–20 mA, Pulse and RS-485 Modbus communication output suitable for PLC/SCADA integration, including all mounting accessories, companion flanges, gaskets, nuts, bolts and installation hardware. and installation of pump and pressure vessel to maintain the pressure in Line. with VFDThe item shall also include providing and fixing of 50 mm Gun Metal Gate Valves, Non-Return Valve (NRV), Y-Strainer, Air Release Valve, Pressure Gauges with gauge cocks, drain valve arrangement, floor-wise isolation valves, tank isolation valves, suitable unions and all necessary hydraulic fittings required for proper operation and maintenance of the treated-water distribution system.The scope shall further include GI/MS fabricated pipe supports, brackets, hangers, channels, anchor fasteners, U-clamps, threaded rods, support frames, terrace supports, shaft supports, anti-corrosion painting of fabricated supports, alignment, fixing, pressure testing, calibration of flow meter, SCADA communication interface, trial run, testing, commissioning and handing over complete in all respects as per the directions of Engineer-in-Charge.The item shall also include all transportation, loading, unloading, internal shifting, installation accessories, special tools & tackles, consumables and miscellaneous materials required for successful completion of the work.

Providing, supplying, laying, fixing, testing and commissioning of complete electrical power, control and communication connectivity for treated-water pumping and monitoring system of one building, including LT power cables from existing electrical source to pump control panel, power cables from control panel to treated-water transfer pumps, multicore control cables, shielded instrumentation cables for ultrasonic level transmitters, shielded communication cables for Electromagnetic Flow Meter (EFM) to PLC/SCADA system, complete with cable glands, copper lugs, ferrules, cable markers, identification tags, terminal blocks, junction boxes, weatherproof local isolators, GI/perforated cable trays, PVC/GI conduits, bends, tees, reducers, clamps, saddles, support brackets, anchor fasteners and all necessary fixing accessories required for complete electrical connectivity of the treated-water pumping system.The item shall also include complete earthing arrangement for pump control panel, VFD, pumps, Electromagnetic Flow Meter (EFM) and associated electrical equipment, including earth wire/strip, earth clamps, terminations, continuity testing and all accessories required for proper and safe operation of the system.The work shall include wall drilling, core cutting, cable routing through shafts and service ducts, cable dressing, cable termination, identification, testing, megger testing, continuity testing, trial run, commissioning, documentation, as-built cable identification and handing over complete in all respects.Since the work is to be executed in a fully occupied Government office building, the item shall also include scaffolding, ladders, temporary working platforms, temporary protection arrangements, floor-wise material shifting, transportation, loading, unloading, internal handling, safety precautions, tools & plants, consumables, testing instruments and all incidental works necessary for successful completion of the work.The supply of Pump Control Panel, Variable Frequency Drives (VFDs), Ultrasonic Level Transmitters, Automation Logic, PLC Programming, Automatic Duty/Standby Changeover and Dry-Run Protection shall be deemed to be included under Item No. 7 and shall not be measured or paid separately under this item.Complete as per the directions of Engineer-in-Charge.