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WO2012172559A3 - Arsenic removal filter using iron powder, ferric hydroxide coated rice husk ash - Google Patents

Arsenic removal filter using iron powder, ferric hydroxide coated rice husk ash Download PDF

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Publication number
WO2012172559A3
WO2012172559A3 PCT/IN2012/000096 IN2012000096W WO2012172559A3 WO 2012172559 A3 WO2012172559 A3 WO 2012172559A3 IN 2012000096 W IN2012000096 W IN 2012000096W WO 2012172559 A3 WO2012172559 A3 WO 2012172559A3
Authority
WO
WIPO (PCT)
Prior art keywords
ferric hydroxide
iron powder
rice husk
removal filter
hydroxide coated
Prior art date
Application number
PCT/IN2012/000096
Other languages
French (fr)
Other versions
WO2012172559A2 (en
Inventor
Viviek GANVIR
Original Assignee
Tata Consultancy Services Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tata Consultancy Services Limited filed Critical Tata Consultancy Services Limited
Publication of WO2012172559A2 publication Critical patent/WO2012172559A2/en
Publication of WO2012172559A3 publication Critical patent/WO2012172559A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/103—Arsenic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/203—Iron or iron compound

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

The present invention provides an apparatus and method for removing contamination of iron and Arsenic from the drinking water. The said apparatus comprises dual filter stage i.e. pre-filter stage and main filter stage, wherein the pre-filter removes iron floes and maintained pH to 6.0-8.5 range. This pH helps in improvement of the adsorption capacity of ferric hydroxide coated RHA. The said apparatus also removes clogging of filter from iron particles via a pre-filter stage.
PCT/IN2012/000096 2011-06-15 2012-02-13 Arsenic removal filter using iron powder, ferric hydroxide coated rice husk ash WO2012172559A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1747MU2011 2011-06-15
IN1747/MUM/2011 2011-06-15

Publications (2)

Publication Number Publication Date
WO2012172559A2 WO2012172559A2 (en) 2012-12-20
WO2012172559A3 true WO2012172559A3 (en) 2013-04-04

Family

ID=47357553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2012/000096 WO2012172559A2 (en) 2011-06-15 2012-02-13 Arsenic removal filter using iron powder, ferric hydroxide coated rice husk ash

Country Status (1)

Country Link
WO (1) WO2012172559A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4149953A (en) * 1977-05-31 1979-04-17 R. H. Bouligny, Inc. Apparatus for removing impurities from waste water
US5080805A (en) * 1988-05-04 1992-01-14 Helen Houser Method and apparatus for removing iron from well water
US6200482B1 (en) * 1997-08-12 2001-03-13 Adi International Inc. Arsenic filtering media
US7459086B2 (en) * 2002-05-07 2008-12-02 Otv Sa S.A. Method for treating water containing iron, manganese and arsenic
WO2010150273A1 (en) * 2009-06-22 2010-12-29 Tata Consultancy Services Ltd. A method and device for purification of arsenic contaminated water
US7892436B2 (en) * 2005-04-25 2011-02-22 The Regents Of The University Of California Compositions and methods for removing arsenic in water

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4149953A (en) * 1977-05-31 1979-04-17 R. H. Bouligny, Inc. Apparatus for removing impurities from waste water
US5080805A (en) * 1988-05-04 1992-01-14 Helen Houser Method and apparatus for removing iron from well water
US6200482B1 (en) * 1997-08-12 2001-03-13 Adi International Inc. Arsenic filtering media
US7459086B2 (en) * 2002-05-07 2008-12-02 Otv Sa S.A. Method for treating water containing iron, manganese and arsenic
US7892436B2 (en) * 2005-04-25 2011-02-22 The Regents Of The University Of California Compositions and methods for removing arsenic in water
WO2010150273A1 (en) * 2009-06-22 2010-12-29 Tata Consultancy Services Ltd. A method and device for purification of arsenic contaminated water

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KHAN, SB ET AL.: "Appraisal Of A Simple Arsenic Removal Method For Groundwater Of Bangladesh.", J. ENVIRON. SCI. HEALTH., vol. A35, no. 7, 2000, pages 1021 - 1041 *
NOUBACTEP, C.: "Metallic Iron For Safe Drinking Water Worldwide.", CHEMICAL ENGINEERING JOURNAL., vol. 165, no. 2, 1 December 2010 (2010-12-01), pages 740 - 749, Retrieved from the Internet <URL:http://www.sciencedirect.com/science/article/pii/S1385894710008958> [retrieved on 20121026] *

Also Published As

Publication number Publication date
WO2012172559A2 (en) 2012-12-20

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