WO2008135987A3 - Method and apparatus for reducing metal concentration in water - Google Patents

Method and apparatus for reducing metal concentration in water Download PDF

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Publication number
WO2008135987A3
WO2008135987A3 PCT/IL2008/000603 IL2008000603W WO2008135987A3 WO 2008135987 A3 WO2008135987 A3 WO 2008135987A3 IL 2008000603 W IL2008000603 W IL 2008000603W WO 2008135987 A3 WO2008135987 A3 WO 2008135987A3
Authority
WO
WIPO (PCT)
Prior art keywords
water
cell
sedimentation tank
electrodes
softened
Prior art date
Application number
PCT/IL2008/000603
Other languages
French (fr)
Other versions
WO2008135987A2 (en
Inventor
Moshe Kain
Gregory Rud
Alexander Melamud
Original Assignee
Ph2O Water Technologies Ltd
Moshe Kain
Gregory Rud
Alexander Melamud
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 Ph2O Water Technologies Ltd, Moshe Kain, Gregory Rud, Alexander Melamud filed Critical Ph2O Water Technologies Ltd
Publication of WO2008135987A2 publication Critical patent/WO2008135987A2/en
Publication of WO2008135987A3 publication Critical patent/WO2008135987A3/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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

The present invention provides a device for decreasing the concentration of metallic components in water contained in a reservoir, comprising i) at least one electrolytic cell with water inlets, comprising of three electrodes (two cathodes and one anode or two anodes and one cathode) and two ion selective membranes placed between said electrodes, providing a divided cell containing four units; ii) an aqueous fluid stream forming closed flow-circuits in which the mass of the fluid is essentially conserved; iii) opened flow-branches through which the mass enters and exits the system; iv) a vacuum cleaning unit, for cleaning said cell; and v) a sedimentation tank connected to said vacuum unit and said cell and a collecting tank for collecting and removing the sediment. The invention also provides a method of reducing the concentration of alkaline earth and heavy metals in a water stream, comprising i) alkalization of water in an electrolytic cell consisting of an odd number of planar electrodes provided by a plurality of parallel channels, and ion selective membranes placed between said electrodes, resulting in the precipitation of said metals and removal thereof into a sedimentation tank; ii) creating a vacuum for sucking gases and debris out of said cell into said sedimentation tank; and iii) circulating said water between said sedimentation tank and said cell; thereby providing softened and purified water. Said softened and purified water has a lowered concentration of calcium and magnesium, and is disinfected by elemental chlorine created during the electrode reactions. Usually, said softened and purified water is also less corrosive.
PCT/IL2008/000603 2007-05-03 2008-05-04 Method and apparatus for reducing metal concentration in water WO2008135987A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL182973A IL182973A (en) 2007-05-03 2007-05-03 Method and apparatus for reducing metal concentration in water
IL182973 2007-05-03

Publications (2)

Publication Number Publication Date
WO2008135987A2 WO2008135987A2 (en) 2008-11-13
WO2008135987A3 true WO2008135987A3 (en) 2009-02-26

Family

ID=39719251

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2008/000603 WO2008135987A2 (en) 2007-05-03 2008-05-04 Method and apparatus for reducing metal concentration in water

Country Status (2)

Country Link
IL (1) IL182973A (en)
WO (1) WO2008135987A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20120394A1 (en) 2012-08-06 2014-02-07 Antonino Abrami METHOD AND SYSTEM OF REDUCING THE CONCENTRATION OF SUSPENDED POLLUTANTS IN WATER FOR SITE ECOLOGY AND FOR BUYING
FR3014863B1 (en) * 2013-12-13 2018-03-02 Geocorail SYSTEM AND METHOD FOR IN SITU ELECTROCHEMICAL PROCESSING FOR THE COLLECTION OF POLLUTANTS, THE SEDIMENTATION AND THE DEPOLLUTION OF CONTAMINATED MARINE SITES.
CN114538674A (en) * 2021-04-23 2022-05-27 东莞市盛德电解设备科技有限公司 Recycling treatment process for electroplating rinse water
CN113603335A (en) * 2021-06-16 2021-11-05 郑州大学 Vacuum-electroosmosis dewatering device for shield waste mud
CN115490346B (en) * 2022-08-05 2023-08-15 青岛海尔施特劳斯水设备有限公司 Filter element recommendation method for water purifier and water purifier

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329813A1 (en) * 1983-08-18 1985-02-28 Gerhard K. Dipl.-Chem. Dr.-Ing. 5628 Heiligenhaus Kunz METHOD AND DEVICE FOR TREATING LIQUIDS, ESPECIALLY DESALINATING AQUEOUS SOLUTIONS
US4539091A (en) * 1980-03-26 1985-09-03 Babcock-Hitachi, Ltd. Electrodialysis desalination process and system for seawater
US5240579A (en) * 1991-03-14 1993-08-31 Yeda Research And Development Company Ltd. Electrodialysis reversal process and apparatus with bipolar membranes
DE4244060A1 (en) * 1992-12-24 1994-06-30 Gruenbeck Josef Wasseraufb Process and plant for treating an aqueous solution by ion exchange
US6139714A (en) * 1997-12-02 2000-10-31 Gemma Industrial Ecology Ltd. Method and apparatus for adjusting the pH of a liquid
WO2002079098A1 (en) * 2001-04-02 2002-10-10 Eltek S.P.A. Household apparatus using a fluid, comprising a purifying system of the type in which at least a substance must be removed from said fluid
WO2003020645A2 (en) * 2001-09-05 2003-03-13 Eltek S.P.A. Household apparatus with electrochemical treatment device for a liquid and treatment method of a fluid using this device
US20060249390A1 (en) * 2003-06-23 2006-11-09 Jinying Yan Boron separation and recovery

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539091A (en) * 1980-03-26 1985-09-03 Babcock-Hitachi, Ltd. Electrodialysis desalination process and system for seawater
DE3329813A1 (en) * 1983-08-18 1985-02-28 Gerhard K. Dipl.-Chem. Dr.-Ing. 5628 Heiligenhaus Kunz METHOD AND DEVICE FOR TREATING LIQUIDS, ESPECIALLY DESALINATING AQUEOUS SOLUTIONS
US5240579A (en) * 1991-03-14 1993-08-31 Yeda Research And Development Company Ltd. Electrodialysis reversal process and apparatus with bipolar membranes
DE4244060A1 (en) * 1992-12-24 1994-06-30 Gruenbeck Josef Wasseraufb Process and plant for treating an aqueous solution by ion exchange
US6139714A (en) * 1997-12-02 2000-10-31 Gemma Industrial Ecology Ltd. Method and apparatus for adjusting the pH of a liquid
WO2002079098A1 (en) * 2001-04-02 2002-10-10 Eltek S.P.A. Household apparatus using a fluid, comprising a purifying system of the type in which at least a substance must be removed from said fluid
WO2003020645A2 (en) * 2001-09-05 2003-03-13 Eltek S.P.A. Household apparatus with electrochemical treatment device for a liquid and treatment method of a fluid using this device
US20060249390A1 (en) * 2003-06-23 2006-11-09 Jinying Yan Boron separation and recovery

Also Published As

Publication number Publication date
WO2008135987A2 (en) 2008-11-13
IL182973A (en) 2011-11-30
IL182973A0 (en) 2008-01-20

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