Large capacity TERAFIL water purification plant-by S.KHUNTIA- NOV 13

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A large capacity TERAFIL (sintered red clay porous disc) based water purification plant was designed by the author for removal of excess iron & purification of groundwater for supply of potable clean water for community use. 1,00,000 liter/ day capacity plant has been installed at Balipatana, Puri district, Orissa, India by RWS&S, Govt of Orissa through technology of the author and financial assistance of CSIR. The iron free purified clean drinking water is being supplied from this Terafil plant to a cluster of villages by pipelines twice a day by RWS&S since December 2012. It is a low GREEN technology which purifies iron contaminated ground water without using chemicals & electricity.

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High capacity TERAFIL water filter for community uses Designed & developed by S.Khuntia Chief Scientist( Rtd ) (Ex-CSIR-IMMT, Bhubaneswar) R&D Consultant Mob: 09437012679 Email: khuntias@gmail.com khuntias@yahoo.com November 2013

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TERAFIL - Red clay filtration media (disc ) & Filters For treatment of ground water :- Quality of product water:- Turbidity : Within BIS limits Bacteria : Within BIS limits Iron : Within BIS limits pH : Within BIS limits Correction of pH for acidic raw water Color & odor reduces drastically and improves taste. Cost of product water: Rs.2/- per ton (considering total cost) Life of Terafil filtration disc: 5 years Life of Terafil stand-alone plant: 10 to 50 yr. For treatment of surface water :- Mild chlorination (2mg/ ltr . bleaching power) to get pathogen free product water from contaminated raw water. Capacity : 1 lit/hr to 1,00,000 lit/day, (No scale-up limitation ) Waste management : Insoluble sludge Rejection of water : Nil Sludge removal: Top wash by water jets or scrubbing Operation : Without electricity & chemicals Maintenance : Almost NIL TERAFIL water filters TERAFI L

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Terafil based water purifiers : Gravity Filtration : Point - of - use: Domestic Terafil water filter (20 to 70 LPD) Community Terafil water filter: 1000 to 1,00,000 LPD (No scale-up limitation) Removal of sludge deposit: manual scrubbing or water sprayer or top wash Frequency of cleaning: once in 15 /30 days, depends on turbidity and iron of raw water. Life: 10 to 50 yrs. Low cost ( Rs.10/- to 12/- per liter capacity community plant with RCC chamber) Rs.2/- per ton product water (considering total capital investment) Chamber for domestic filter: Plastic & Stainless steel or any other materials Chamber for community filter: RCC & HDFC or any other materials Floor area of plant: 1.25 sq.ft / 200 liter per day capacity for community filter Pressure filtration : On-line Terafil water filter: 100-200 lit/ hr (depending on turbidity) Community pressure filter: 1000 to 10,000 lit/ hr Automatic cleaning & removal of sludge from top surface of Terafil disc. Life: 5 to 20 yrs (depending on materials of chambers) Low cost ( depending upon material of construction of filter) Rs.2/- per ton product water or less. High capacity , compact and requires very less floor area . Chamber material of domestic on-line: Plastic chamber Chamber material of community filter: Stainless steel

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1,00,000 lit/day TERAFIL water purification plant (gravity operated) at Balipatana , Khordha , Odisha , India Designed & developed by S.Khuntia , Inventor & ex-Chief Scientist of CSIR-IMMT, Bhubaneswar. Installed & operated by RWS&S, Govt of Odisha through financial assistance & technology of CSIR, Govt of India. Functioning continuously since December 2012 and product water being supplied to Balipatana cluster villages through pipeline twice a day. Raw water: Ground water contaminated with dissolved iron (within 5 mg/lit). Product water: Clean drinking water, iron within permissible limit. No chemicals & electricity are used for purification of raw water. Rejuvenation of purification: Top wash of Terafil candles by raw water once in 15days, without hampering supply of product water, for disposal of insoluble iron sludge from raw water chamber. Materials of construction: RCC Chamber and TERAFIL red clay candles. Expected life of Terafil plant: 50 years. Expected life of Terafil candles: more than 10 years. Total construction cost of plant: Rs.9.20 lakh (in year 2012) Cost of purification: Rs.2,500/- per million liter product water (considering total capital investment & 10 yrs life)

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1,00,000 lit/day TERAFIL water purifier at Balipatana , Puri dist , Odisha

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Top of 1,00,000 lit/day TERAFIL water purifier at Balipatana , Puri dist , Odisha

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Manhole on top of chambers Back side vertical wall of chambers

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Top chamber holding iron contaminated raw water

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Raw water charging

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TERAFIL CANDLES BELOW RAW WATER

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Filter water being supplied to villagers twice daily for two hours each time at discharge rate: 14 liter per second ( lps ) = 1.0 to 2.0 lakh liters per day

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0.1 MLD TERAFIL community plant at Balipatana, Odisha NOTE: 2.0 lakh lit/day plant under commission at Central Reserve Police Force campus, Bhubaneswar RAW WATER CHAMBER TERAFIL DISC

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