REPAIR/ MAINT TO AMF PANELS ALONG WITH CONNECTED XLPE CABLES OF DG SET AND SEWAGE TREATMENT LINE, CLEANING OF AERATOR MBBR TANKS, UG SUMPS OF STPS CONNECTED WORKS AT AFS UNDER GE (AF) SAMBRA

M&L for mixing of approved bio-culture / bio-enzymes (HSN Code : 30029030) for improvement of biological treatment process in MBBR / aeration tanks Sewage Treatment Plants (STP's) of any capacity, including MBBR / aeration tanks complete all as specified, directed and comprising the following: a) Supply of high-quality, non-pathogenic, eco-friendly bio-culture suitable for sewage treatment and compatible with existing STP process (MBBR / Activated Sludge / Aeration system). b) Deployment of experienced and technically qualified STP/bio-treatment expert to visit the site, assess existing STP performance parameters (BOD, COD, MLSS, DO, pH, etc.) and decide suitable dosage. c) Mixing and dosing of bio-culture directly into aeration tanks / MBBR media zones, including proper dilution, circulation and uniform distribution as per manufacturer’s recommendation. d) Continuous monitoring during dosing period to ensure effective activation of biomass, improvement in microbial activity and stabilization of treatment process. e) Ensuring successful performance of STP, achieving treated effluent parameters within prescribed limits as per PCB norms. f) Item includes all materials, labour, tools, consumables, expert supervision, testing, monitoring and incidental charges, complete all as specified and as directed. Note : Quoted rate included with visits, supervision, testing or re-dosing required to achieve desired results

M&L for Cleaning of sewage collection tank of 1 lakh gallon capacity and the work includes the following Services: 1.Dewatering the tank using a suitable submersible pumps/mud pumps of adequate capacity to pump out all sewage and sludge water. 2.Removal of settled sludge and solid waste by mechanized means using a suitable septic cleaning/vacuum tanker fitted with adequate-capacity sludge/vacuum pumps, including suction, collection and loading of sludge from the tank. Manual removal of sludge from the tank shall not be permitted. 3.Engaging a minimum of 2 workers per day, including 1 supervisor, trained in confined space entry and equipped with full PPE (gum boots, gloves, helmets, safety goggles, gas masks/oxygen masks, and safety belts).Contractor will resposible for all safety precaution of worker. 4.Thorough scrubbing and washing of tank walls, floor, and corners using hard nylon brushes and high-pressure jet cleaning machines to remove stains, algae, and deposits. 5.Disinfecting with a 5% Sodium Hypochlorite solution (min 50Ltrs) or other approved equivalent disinfectant for sterilization of internal surfaces. 6.Complete removal and transportation of sludge, silt, and debris to a designated disposal site outside the defence area. Disposal of sludge is the entire responsibility of the contractor. 7.After cleaning, painting the cleaned tank date in white letters on a black background (letter size 75 mm), including date of cleaning. 8.Final flushing of tank with potable water and ventilating for at least 8 hours before reuse. 9.The contractor shall arrange all materials, labour, tools, plants, chemicals, safety equipment, and transportation necessary to complete all as specified and as directed by the Engineer-in-Charge.

All as per Srl item No.02 above cleaning of aeration tanks of capacity 50000 gallon at STP North Camp

All as per Srl item No.02 here-in-above but cleaning of Fine bar screen, O&G Chamber and Anoxic Chamber at STP South Camp

All as per Srl item No.02 here-in-above but cleaning of clarifier tank unit of capacity 1 lakh Gallons including cleaning of central resonance unit of clarifier, cross arms, blades, bridge platform, drive assembly etc. and greasing and lubrication of moving parts after claening.

All as per Srl item No.02 here-in-above but cleaning of trated water collection tank at South Camp STP

All as per Srl item No.02 here-in-above but cleaning of ultra filteration trated water collection tank at south camp STP

M&L for cleaning of MBBR -1 and MBBR-2 at STP South Camp and the work includes the following Services: 1.Dewatering the tank using a suitable submersible pumps/mud pumps of adequate capacity to pump out all sewage and sludge water. 2.Manual removal of bio-media from the tanks and safe temporary storage in clean containers(To be provided by the contractor) within the premises. 3.Removal of settled sludge and solid waste by mechanized means using a suitable septic cleaning/vacuum tanker fitted with adequate-capacity sludge/vacuum pumps, including suction, collection and loading of sludge from the tank. Manual removal of sludge from the tank shall not be permitted. 4.Engaging a minimum of 2 workers per day, including 1 supervisor, trained in confined space entry and equipped with full PPE (gum boots, gloves, helmets, safety goggles, gas masks/oxygen masks, and safety belts).Contractor will resposible for all safety precaution of worker. 5.Thorough scrubbing and washing of tank walls, floor, and corners using hard nylon brushes and high-pressure jet cleaning machines to remove stains, algae, and deposits. 6.Complete removal and transportation of sludge, silt, and debris to a designated disposal site outside the defence area. Disposal of sludge is the entire responsibility of the contractor. 7.After cleaning, painting the cleaned tank date in white letters on a black background (letter size 75 mm), including date of cleaning. 8.Final flushing of tank with potable water and ventilating for at least 8 hours before reuse. 9.Proper handling and reinstallation of bio-media after cleaning. 10.The contractor shall arrange all materials, labour, tools, plants, chemicals, safety equipment, and transportation necessary to complete all as specified and as directed by the Engineer-in-Charge.

M&L for placing in position HDPE Virgin White MBBR (Moving Bed Bio Reactor) Media suitable for 800 KLD Sewage Treatment Plant, Media shall be of Fluidized Random Bio Media type, cylindrical, self-supporting structure with external fins, made of HDPE Virgin material, natural white colour, suitable for aeration tank application.the media should follow the following technical specifications: 1) Model : VPFM 415 or equivalent 2)Size : 4 mm (height) × 25 mm (dia) approx. 3)Specific Surface Area : ≥1600 m²/m³ 4)Specific Gravity : 0.92 – 0.96 g/cm³ 5)Void Ratio : ≥82% 6)Maximum Operating Temperature : 80°C 7)The media shall be resistant to corrosion, chemicals, biological degradation and shall be suitable for continuous aeration conditions. Note : Rate shall include transportation to site,experienced and technically qualified STP/bio-treatment expert to visit the site, and placing inside MBBR tank & removing the old MBBR outside complete all as specified and as directed.

S&F Rotational moulded polyethylene water storage tanks, three layered wall construction 2000Ltr capacity (cylindrical vertical with closed top) hoisted and fixed in position complete all as specified and directed