Conceptualized 25,000 M3/D i.e. 25 MLD CETP at Baddi for treatment of waste from around 700 industries including Textiles, pharmaceutical, paper and pulp, Food processing, Detergent and miscellaneous industries.
The project was executed on a Swiss challenge mode. Project included first of a kind pressurized conveyance system spanning over 60 KM for collection and conveyance of the waste from various factories.
Treatment cost lowest for such complex waste on account of segregation and treatment via conveyance system and at CETP. Outlet values in the range of COD 70 to 100 ppm.
The 240 MLD treatment facilities were spread over an area of 1.0x0.3 Km.
The treatment included primary treatment including screening, removal of grit followed by primary clarification.
Primary clarified effluent was treated in a conventional ASP process. The clarified effluent was chlorinated before disposal. The sludge from primary clarifier and excess sludge from the ASP was digested to produce methane. The excess digested sludge was further dewatered using belt filter press before final disposal.
Designed, constructed, commissioned and operated successfully for a period of 3 year.
Treatment of sewage generated from the Holy city of Haridwar to meet the River standards of disposal. The treatment facilities included construction of Main pumping station to lift the sewage from the underground sewerage system, Integration of the 27 MLD STP with the existing 18 MLD for sludge treatment and disinfection.
The sewage treatment plant was designed to treat the carbonaceous organic waste along with Nutrient removal to achieve outlet values of BOD less than 10 ppm, Ammonia less than 5 ppm and TSS less
Than 10 ppm.The treatment units included Receiving chamber, Coarse bar screens, MPS, Fine bar screens, Grit removal units, Primary clarifier, SBR, Disinfection with chlorination, Treatment of sludge in thickeners, anaerobic digesters followed by dewatering before disposal by sale to farmers. The treated effluent meeting disposal standards for treated sewage was disposed off to the Ganges.
The plant after commissioning was operated for 5 years before hand over to the GPCU
Designing, detail engineering, Construction, installation testing & commissioning of Intake Well, Suction piping, Jackwell with Pump House, Service Bridge / Platform connecting Jackwell and road on Khandepar River at Ponda, required raw water pump sets, pump house and Electrical Substation on turnkey basis.
Designing, providing, laying, jointing, testing and commissioning of M.S. Raw Water Rising main from Jackwell to WTP site (Aerator point) on turnkey basis. Designing, detail engineering, Construction, installation testing & commissioning of 25 MLD water Treatment plant with 20% overloading capacity including all civil works, mechanical, electrical and instrumentation works on turnkey basis.
Conceptualised, designed and commissioned a highly energy efficient zero discharge unit including pretreatment, UF followed by very high recovery and energy efficient (30% less power than the best designed systems) patented RO for treatment and recycle of maximum quantity of wastewater based on the various components present in the waste.
Plant has been operated for more than 4 years without any break down or fouling of membranes. Plant is fully automatic with automated CIP and recovery cleans. Plant status being transmitted via web based interface and SMS in case of alarms.
Methane generated was used in the plant for replacing fossil fuels. COD destruction capacity of the plant was 40 to 45 T COD per day against design capacity of 35 T/D, generating close to 25,000 cubic meter of biogas which was directly fired in a furnace as a replacement of fossil fuel.
Monitored plant operation for 2 years resulting in
enhancement of efficiency and capacity of reactor. Assisted RIL in identifying leakage of acetic acid by analysis of waste water plant data and observations.
Information was shared with RIL enabling them to plug leak of valuable raw material.
A treatment process was developed for removal of arsenic from acidic copper refinery wastewater before neutralisation to obtain gypsum free of arsenic after neutralisation thus eliminating hazardous waste to solid landfill.
Treatment units include clarifier cum thickener for recovery of precious metals followed by dosing of sodium sulfide in jet loop reactors. Precipitating arsenic as sulfide precipitate.
Clarification and thickening of the sludge for dewatering as cake, the excess hydrogen sulfide was scrubbed with caustic to recover sodium sulfide which is then recycled back to the scrubber. The excess acid was precipitated using classified Milk of lime. Clarification and thickening of arsenic free sludge which is being reused.
Developed, designed and executed project to treat the produced water from Gas gathering stations at Dholka.
The treatment scheme involved withdrawal of produced water from the heater treater using positive displacement pumps to prevent emulsification of oil followed by recovery of free oil. The emulsified oil was destroyed using chemicals and the remaining organics were treated biologically which is the cheapest treatment methodology for treatment of waste.
Have developed a suitable treatment process and prepared a project report which was approved by the state pollution control board, National Environmental Engineering Research Institute and IDBI.
The project report was considered to be the best design project funded by the WORLD BANK.
The company Enviro technology Ltd. was promoted to establish a common effluent treatment plant to treat the waste from about hundred small scale industries such as dyes, pigments, chemical, pharmaceuticals and textiles.
The effluent treatment plant was constructed and commissioned to provide primary, secondary and tertiary treatment to the waste before final disposal.
Designed, constructed, commissioned and operated a treatment plant to treat the waste from Aniline and Nitrobenzene manufacturing unit.
The treatment plant comprised of a steam stripper to remove the volatile organics. This was followed by Equalisation of the waste strength in terms of flow and organic strength followed by biological treatment.
The refractory organics were removed by a combination of physical adsorption and chemical oxidation before reuse.
Worked further in close association with NCPL project team to introduce in-plant control measures to reduce pollution at source and to reduce treatment costs.
A zero discharge plant was setup to treat the waste from a textile manufacturing unit set up by Gujarat heavy chemicals ltd.
The treatment scheme involved cooling of the waste from the textile manufacturing unit using heat exchangers, Equalisation, removal of excess silica from waste water, physical treatment to remove solids and reduction in colour followed by biological treatment using MBR.
The permeate from MBR was led to RO unit for removal of TDS from where the treated water was sent for reuse in manufacturing process. The rejects from the RO unit containing concentrated stream of salts were sent to multiple effect evaporator for recovery of salt.
Provided segregation and pretreatment of pharmaceutical waste having flow of 1160 m3/ day the pretreated waste was provided with anaerobic treatment i.e. UASB which was designed on Lower COD Loading rates.
The design provided for higher hydraulic loading rates as it operates on higher upflow velocities. Higher recirculation provides dilution thus reduces shock loading.
Feed rate to UASB was controlled using bio gas flow transmitter thus preventing overloading of the reactor.
Separate UASB sludge storage Tank has been provided to store excess sludge generated in UASB reactor. This can be used to restart UASB reactor in case of any process upset without downtime. High energy efficient fine retrievable type diffused aeration system, was provided with a PID loop to control DO level could be controlled in bioreactor.
A treatment scheme was developed to treat the waste generated from a slaughterhouse having waste flow of around 1700 M3/d.
The treatment scheme included primary treatment in form of screenings and pumping stations for conveying waste from the abattoir to the treatment plant. this was followed by flow equalisation and removal of fats and oil using dissolved air flotation.
To take care of the high COD 3 numbers of UASB were provided in MS construction and 3 phase GLSS. The methane gas was being sent back to the abattoir for saving in fossil fuels. The anaerobic treatment was followed by aerobic treatment, tertiary treatment and sludge handling systems.A treatment scheme was developed to treat the waste generated from Veraval food processing industries having a waste flow of around 5,000 M3/d. The treatment scheme included conveyance of the effluent from member industries by means of four numbers of pumping stations, rising main and gravity conveyance system.
The treatment scheme includes primary treatment in form of screening, equalisation, oil and grease removal.
With a view to provide a rugged treatment scheme and to meet the treatment quality provided with MBR, a special treatment scheme was devised.
The treatment scheme included Nitrification, De Nitrification and BOD removal using specially designed MBBR process followed by filtration using a special filter for polishing the biological treated water before discharge.
The outlet BOD after treatment was in the range of 2.5 to 5.0 ppm and turbidity was in the range of 0.35 to 1.0 NTU.
