CA2316012A1 - Method of disinfecting a deionized water producing apparatus and method of producing deionized water - Google Patents

Method of disinfecting a deionized water producing apparatus and method of producing deionized water Download PDF

Info

Publication number
CA2316012A1
CA2316012A1 CA002316012A CA2316012A CA2316012A1 CA 2316012 A1 CA2316012 A1 CA 2316012A1 CA 002316012 A CA002316012 A CA 002316012A CA 2316012 A CA2316012 A CA 2316012A CA 2316012 A1 CA2316012 A1 CA 2316012A1
Authority
CA
Canada
Prior art keywords
deionized water
producing
disinfecting
hot water
producing apparatus
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002316012A
Other languages
French (fr)
Other versions
CA2316012C (en
Inventor
Junya Hirayama
Shigeaki Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water Industries Ltd
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 Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Publication of CA2316012A1 publication Critical patent/CA2316012A1/en
Application granted granted Critical
Publication of CA2316012C publication Critical patent/CA2316012C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44Ion-selective electrodialysis
    • B01D61/46Apparatus therefor
    • B01D61/48Apparatus therefor having one or more compartments filled with ion-exchange material, e.g. electrodeionisation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44Ion-selective electrodialysis
    • B01D61/52Accessories; Auxiliary operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/58Multistep processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D65/00Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02Membrane cleaning or sterilisation ; Membrane regeneration
    • B01D65/022Membrane sterilisation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00Ion-exchange processes in general; Apparatus therefor
    • B01J47/02Column or bed processes
    • B01J47/06Column or bed processes during which the ion-exchange material is subjected to a physical treatment, e.g. heat, electric current, irradiation or vibration
    • B01J47/08Column or bed processes during which the ion-exchange material is subjected to a physical treatment, e.g. heat, electric current, irradiation or vibration subjected to a direct electric current
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2321/00Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/08Use of hot water or water vapor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025Reverse osmosis; Hyperfiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/145Ultrafiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/147Microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/20Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C02F1/4693Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02Non-contaminated water, e.g. for industrial water supply
    • C02F2103/04Non-contaminated water, e.g. for industrial water supply for obtaining ultra-pure water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection

Abstract

An electrodeionization apparatus for deionized water is prevented from bacteria proliferation therein. The deionized water producing apparatus and the electrodeionization apparatus filled with ion exchangers in the diluting compartment thereof. Hot water of more than 80°C is fed into the RO apparatus and hot water of more than 60°C is fed to the electrodeionization apparatus. Hot water flowing through the electrodeionization apparatus is gradually heated at a rate of 0,1-10°C/min.
CA002316012A 1999-08-11 2000-08-10 Method of disinfecting a deionized water producing apparatus and method of producing deionized water Expired - Fee Related CA2316012C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP22771499A JP3570304B2 (en) 1999-08-11 1999-08-11 Sterilization method of deionized water production apparatus and method of producing deionized water
JPH11-227714 1999-08-11

Publications (2)

Publication Number Publication Date
CA2316012A1 true CA2316012A1 (en) 2001-02-11
CA2316012C CA2316012C (en) 2005-04-12

Family

ID=16865211

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002316012A Expired - Fee Related CA2316012C (en) 1999-08-11 2000-08-10 Method of disinfecting a deionized water producing apparatus and method of producing deionized water

Country Status (3)

Country Link
US (1) US6461512B1 (en)
JP (1) JP3570304B2 (en)
CA (1) CA2316012C (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002026629A2 (en) * 2000-09-28 2002-04-04 United States Filter Corporation Electrodeionization device and methods of use
US6607647B2 (en) 2001-04-25 2003-08-19 United States Filter Corporation Electrodeionization apparatus with expanded conductive mesh electrode and method
US6649037B2 (en) 2001-05-29 2003-11-18 United States Filter Corporation Electrodeionization apparatus and method
US7658828B2 (en) 2005-04-13 2010-02-09 Siemens Water Technologies Holding Corp. Regeneration of adsorption media within electrical purification apparatuses
US7820024B2 (en) 2006-06-23 2010-10-26 Siemens Water Technologies Corp. Electrically-driven separation apparatus
US7846340B2 (en) 2003-11-13 2010-12-07 Siemens Water Technologies Corp. Water treatment system and method
US7862700B2 (en) 2003-11-13 2011-01-04 Siemens Water Technologies Holding Corp. Water treatment system and method
US8101058B2 (en) 2001-10-15 2012-01-24 Siemens Industry, Inc. Apparatus for fluid purification
US8377279B2 (en) 2003-11-13 2013-02-19 Siemens Industry, Inc. Water treatment system and method
US8585882B2 (en) 2007-11-30 2013-11-19 Siemens Water Technologies Llc Systems and methods for water treatment
US8658043B2 (en) 2003-11-13 2014-02-25 Siemens Water Technologies Llc Water treatment system and method
US8894834B2 (en) 2003-11-13 2014-11-25 Evoqua Water Technologies Llc Water treatment system and method
US9023185B2 (en) 2006-06-22 2015-05-05 Evoqua Water Technologies Llc Low scale potential water treatment

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7147785B2 (en) * 2000-09-28 2006-12-12 Usfilter Corporation Electrodeionization device and methods of use
JP4480251B2 (en) * 2000-10-19 2010-06-16 日本碍子株式会社 Disinfection of electric regenerative deionized water purifier
US7105587B2 (en) * 2001-03-07 2006-09-12 Innovative Construction And Building Materials Method and composition for polymer-reinforced composite cementitious construction material
JP2003260463A (en) * 2002-03-12 2003-09-16 Kurita Water Ind Ltd Manufacturing method of pure water
US7501061B2 (en) * 2002-10-23 2009-03-10 Siemens Water Technologies Holding Corp. Production of water for injection using reverse osmosis
US20040118780A1 (en) * 2002-12-20 2004-06-24 Barnstead/Thermolyne Corporation Water purification system and method
JP2004216302A (en) * 2003-01-16 2004-08-05 Kurita Water Ind Ltd Electrodeionizing apparatus and water treatment apparatus
US6929748B2 (en) * 2003-03-28 2005-08-16 Chemitreat Pte Ltd Apparatus and method for continuous electrodeionization
JP5082188B2 (en) * 2003-10-01 2012-11-28 栗田工業株式会社 Water treatment device for fuel cell
US7563351B2 (en) 2003-11-13 2009-07-21 Siemens Water Technologies Holding Corp. Water treatment system and method
WO2006038325A1 (en) * 2004-09-30 2006-04-13 Kurita Water Industries Ltd. Water treatment apparatus for fuel cell
JP4557686B2 (en) * 2004-11-15 2010-10-06 株式会社東芝 Electric desalination apparatus and desalting method
EP1885655B1 (en) 2005-06-01 2014-12-17 Evoqua Water Technologies LLC Water treatment process by intermittent sanitization
JP2007075712A (en) * 2005-09-13 2007-03-29 Masayoshi Iwahara Sterilized electrodialysis method
US20070102357A1 (en) * 2005-11-09 2007-05-10 David Weatherill Heat sanitization for reverse osmosis systems
ITMI20052520A1 (en) * 2005-12-29 2007-06-30 Ansaldo Energia Spa WATER TREATMENT SYSTEM OF AN INDUSTRIAL PLANT IN PARTICULAR OF AN ENERGY GENERATION PLANT
NO20071748L (en) * 2006-04-06 2007-10-08 Christ Water Technology Ag Device for continuous electrochemical desalination with integrated membrane interval.
US8277627B2 (en) 2006-06-13 2012-10-02 Siemens Industry, Inc. Method and system for irrigation
US10252923B2 (en) 2006-06-13 2019-04-09 Evoqua Water Technologies Llc Method and system for water treatment
US10213744B2 (en) 2006-06-13 2019-02-26 Evoqua Water Technologies Llc Method and system for water treatment
US7744760B2 (en) 2006-09-20 2010-06-29 Siemens Water Technologies Corp. Method and apparatus for desalination
JP4440989B1 (en) * 2009-06-03 2010-03-24 ダイセン・メンブレン・システムズ株式会社 Method for producing purified water
JP5307049B2 (en) * 2010-01-21 2013-10-02 野村マイクロ・サイエンス株式会社 Method for producing purified water for pharmaceuticals, and apparatus for producing purified water for pharmaceuticals
JP5459704B2 (en) * 2010-01-25 2014-04-02 野村マイクロ・サイエンス株式会社 Purified water production method and purified water production apparatus
US9790109B2 (en) * 2010-04-30 2017-10-17 General Electric Company Method for sanitizing an electrodeionization device
JP5480063B2 (en) * 2010-08-16 2014-04-23 野村マイクロ・サイエンス株式会社 Pure water production method and pure water production apparatus
JP5572563B2 (en) * 2011-02-04 2014-08-13 三菱レイヨン株式会社 Hot water disinfection method of nanofiltration membrane
KR101947994B1 (en) * 2011-05-25 2019-02-14 코웨이 주식회사 Water treatment apparatus
US8961770B2 (en) 2011-10-27 2015-02-24 Pentair Residential Filtration, Llc Controller and method of operation of a capacitive deionization system
US8671985B2 (en) 2011-10-27 2014-03-18 Pentair Residential Filtration, Llc Control valve assembly
US9010361B2 (en) 2011-10-27 2015-04-21 Pentair Residential Filtration, Llc Control valve assembly
US9637397B2 (en) 2011-10-27 2017-05-02 Pentair Residential Filtration, Llc Ion removal using a capacitive deionization system
US9695070B2 (en) 2011-10-27 2017-07-04 Pentair Residential Filtration, Llc Regeneration of a capacitive deionization system
DE102012208778A1 (en) 2012-05-24 2013-11-28 Bwt Aqua Ag Process and plant for the treatment of water
JP6074261B2 (en) * 2012-12-27 2017-02-01 野村マイクロ・サイエンス株式会社 Sterilization method for pharmaceutical pure water production apparatus and pharmaceutical pure water production apparatus
JP2014124482A (en) * 2012-12-27 2014-07-07 Nomura Micro Sci Co Ltd Method of sterilizing pure water production apparatus for pharmaceuticals and pure water production apparatus for pharmaceuticals
JP6082247B2 (en) * 2012-12-27 2017-02-15 野村マイクロ・サイエンス株式会社 Sterilization method for pharmaceutical pure water production apparatus and pharmaceutical pure water production apparatus
JP6056476B2 (en) * 2012-12-28 2017-01-11 栗田工業株式会社 Pure water production system
US9665852B2 (en) * 2014-05-13 2017-05-30 Vws (Uk) Ltd. Water purification unit
JP6107987B1 (en) * 2016-02-22 2017-04-05 栗田工業株式会社 Cleaning method of ultrapure water production system
JP6300988B2 (en) * 2017-05-08 2018-03-28 旭化成株式会社 Method for operating water treatment apparatus and method for producing potable water
AU2018321819B2 (en) 2017-08-21 2024-04-04 Evoqua Water Technologies Llc Treatment of saline water for agricultural and potable use
JP7011457B2 (en) * 2017-12-19 2022-01-26 オルガノ株式会社 Sterilization method for pure water production equipment
JP7306074B2 (en) * 2019-06-06 2023-07-11 栗田工業株式会社 Ultrapure water production device and ultrapure water production method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4956071A (en) * 1984-07-09 1990-09-11 Millipore Corporation Electrodeionization apparatus and module
EP0563321B1 (en) * 1990-12-17 1996-06-12 Ionpure Technologies Corporation Electrodeionization apparatus
US5591344A (en) * 1995-02-13 1997-01-07 Aksys, Ltd. Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof
JP3426072B2 (en) * 1996-01-17 2003-07-14 オルガノ株式会社 Ultrapure water production equipment
US5868915A (en) * 1996-09-23 1999-02-09 United States Filter Corporation Electrodeionization apparatus and method

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002026629A3 (en) * 2000-09-28 2002-12-19 United States Filter Corp Electrodeionization device and methods of use
WO2002026629A2 (en) * 2000-09-28 2002-04-04 United States Filter Corporation Electrodeionization device and methods of use
US6607647B2 (en) 2001-04-25 2003-08-19 United States Filter Corporation Electrodeionization apparatus with expanded conductive mesh electrode and method
US6649037B2 (en) 2001-05-29 2003-11-18 United States Filter Corporation Electrodeionization apparatus and method
US6824662B2 (en) 2001-05-29 2004-11-30 Usfilter Corporation Electrodeionization apparatus and method
US8101058B2 (en) 2001-10-15 2012-01-24 Siemens Industry, Inc. Apparatus for fluid purification
US8721862B2 (en) 2001-10-15 2014-05-13 Evoqua Water Technologies Llc Apparatus for fluid purification and methods of manufacture and use thereof
US8894834B2 (en) 2003-11-13 2014-11-25 Evoqua Water Technologies Llc Water treatment system and method
US7862700B2 (en) 2003-11-13 2011-01-04 Siemens Water Technologies Holding Corp. Water treatment system and method
US7846340B2 (en) 2003-11-13 2010-12-07 Siemens Water Technologies Corp. Water treatment system and method
US8377279B2 (en) 2003-11-13 2013-02-19 Siemens Industry, Inc. Water treatment system and method
US8658043B2 (en) 2003-11-13 2014-02-25 Siemens Water Technologies Llc Water treatment system and method
US8864971B2 (en) 2003-11-13 2014-10-21 Evoqua Water Technologies Llc Water treatment system and method
US7658828B2 (en) 2005-04-13 2010-02-09 Siemens Water Technologies Holding Corp. Regeneration of adsorption media within electrical purification apparatuses
US9023185B2 (en) 2006-06-22 2015-05-05 Evoqua Water Technologies Llc Low scale potential water treatment
US9586842B2 (en) 2006-06-22 2017-03-07 Evoqua Water Technologies Llc Low scale potential water treatment
US7820024B2 (en) 2006-06-23 2010-10-26 Siemens Water Technologies Corp. Electrically-driven separation apparatus
US8585882B2 (en) 2007-11-30 2013-11-19 Siemens Water Technologies Llc Systems and methods for water treatment
US9011660B2 (en) 2007-11-30 2015-04-21 Evoqua Water Technologies Llc Systems and methods for water treatment
US9637400B2 (en) 2007-11-30 2017-05-02 Evoqua Water Technologies Llc Systems and methods for water treatment

Also Published As

Publication number Publication date
US6461512B1 (en) 2002-10-08
JP3570304B2 (en) 2004-09-29
JP2001047054A (en) 2001-02-20
CA2316012C (en) 2005-04-12

Similar Documents

Publication Publication Date Title
CA2316012A1 (en) Method of disinfecting a deionized water producing apparatus and method of producing deionized water
WO2002096807A3 (en) Electrodeionization apparatus and method
AU2508295A (en) Ionized water, and method and apparatus for manufacturing the same
EP1075868A3 (en) Electrodeionization apparatus and pure water producing apparatus
EP1364709A3 (en) Electrodeionization deionized water producing apparatus
GB2358629B (en) Formulae, methods and apparatus for the: treatment of; processing of; pasteurisation; dissociating water in; and the communication of: materials;
ZA200701790B (en) Colorant treated ion exchange resins, method of making, heat transfer systems and assemblies containing the same, and method of use
EP1038837A3 (en) An electrodeionization apparatus comprising sub-desalination chambers
CA2212763A1 (en) Electrolytic hydrogen dissolved water, and method and apparatus for production thereof
AU2001288447A1 (en) Method for pretreating water for desalination
MY120689A (en) High-purity water producing apparatus utilizing boron-selective ion exchange resin.
ZA200701537B (en) Treated ion exchange resins, method of making, assemblies and heat transfer systems containing the same, and method of use
AU588304B2 (en) Method for the electrolytic preparation of hypochlorite in flowing salt-containing water, and also a device suitable for carrying out such a method
ZA97722B (en) Grafted copolymers, their process of manufacture, the compositions containing them and their use for the preparation of pigmentary dispersions in an aqueous and/or organic medium.
EP1364914A4 (en) Method and system for treating nitrogen-containing compound
EP1405671A3 (en) Method of preventing corrosion in a water system
EP0647721A3 (en) Agent for treating metal ions in an aqueous solution, process for producing the metal ion-treating agent and method for treating metal ions in an aqueous solution.
CA2033458A1 (en) Water treatment system with preservice rinse
AU8022798A (en) Method for preparing an ultrapure hydrogen peroxide solution by ion exchange with an anionic-cationic-anionic-cationic sequence
WO2005018559A3 (en) Apparatus and method for the production of hydrogen
CA2365313A1 (en) Method for eliminating legionella from a colonized aqueous flux by electropulsation, method for the treatment of an aqueous flux by electropulsation and use thereof in the elimination of legionella
AU7401700A (en) Method and device for treating water, especially drinking water, and for maintaining the purity thereof
AU2003231440A1 (en) Water containing active hydrogen and process for producing the same
MD1440F1 (en) Process of sugar-beet seeds presawing treatment
Smith Cooling water treatment

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed