GB2355213A - Apparatus and method of recirculating electrodeionisation - Google Patents

Apparatus and method of recirculating electrodeionisation

Info

Publication number
GB2355213A
GB2355213A GB0100132A GB0100132A GB2355213A GB 2355213 A GB2355213 A GB 2355213A GB 0100132 A GB0100132 A GB 0100132A GB 0100132 A GB0100132 A GB 0100132A GB 2355213 A GB2355213 A GB 2355213A
Authority
GB
United Kingdom
Prior art keywords
holding tank
flow path
path
water
deionising
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
GB0100132A
Other versions
GB2355213B (en
GB0100132D0 (en
Inventor
Nigel Emery
Roger Woodward
Paul Whitehead
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.)
Water Applications and Systems Corp
Original Assignee
United States Filter Corp
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 United States Filter Corp filed Critical United States Filter Corp
Publication of GB0100132D0 publication Critical patent/GB0100132D0/en
Publication of GB2355213A publication Critical patent/GB2355213A/en
Application granted granted Critical
Publication of GB2355213B publication Critical patent/GB2355213B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B01D61/46—Apparatus therefor
    • B01D61/48—Apparatus therefor having one or more compartments filled with ion-exchange material, e.g. electrodeionisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B01J47/06—Column or bed processes during which the ion-exchange material is subjected to a physical treatment, e.g. heat, electric current, irradiation or vibration
    • B01J47/08—Column 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
    • 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
    • C02F1/4604—Treatment of water, waste water, or sewage by electrochemical methods for desalination of seawater or brackish water
    • 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

Abstract

An electrodeionisation apparatus comprising a first deionising flow path and an integral second deionising flow path is described. The outflow from the first path is held in a holding tank prior to passage through the second flow path, and the outflow from the second path is available for use. Optionally, the second path outflow is partly or fully returned to the holding tank. The recirculation of the already purified water in the holding tank maintains the water in the holding tank at a higher standard than otherwise "standing" purified water. The water in the holding tank could be separately made available for use. The apparatus requires the use of only a single pair of electrodes and hence one power supply. Moreover, the ion exchange materials in the first deionising flow path can be regenerated when water is not flowing through them such that they have a greater capacity for deionisation when required.
GB0100132A 1999-05-07 2000-05-03 Apparatus and method of recirculating electrodeionisation Expired - Fee Related GB2355213B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9910550.4A GB9910550D0 (en) 1999-05-07 1999-05-07 Apparatus and method of recirulating electrodeionisation
PCT/US2000/011936 WO2000067906A1 (en) 1999-05-07 2000-05-03 Apparatus and method of recirculating electrodeionisation

Publications (3)

Publication Number Publication Date
GB0100132D0 GB0100132D0 (en) 2001-02-14
GB2355213A true GB2355213A (en) 2001-04-18
GB2355213B GB2355213B (en) 2003-01-15

Family

ID=10852974

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9910550.4A Ceased GB9910550D0 (en) 1999-05-07 1999-05-07 Apparatus and method of recirulating electrodeionisation
GB0100132A Expired - Fee Related GB2355213B (en) 1999-05-07 2000-05-03 Apparatus and method of recirculating electrodeionisation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9910550.4A Ceased GB9910550D0 (en) 1999-05-07 1999-05-07 Apparatus and method of recirulating electrodeionisation

Country Status (2)

Country Link
GB (2) GB9910550D0 (en)
WO (1) WO2000067906A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4778664B2 (en) * 2000-08-11 2011-09-21 ジーイー・アイオニクス・インコーポレイテッド Apparatus and method for electrodialysis
EP1308201B1 (en) * 2001-10-31 2005-01-05 Kurita Water Industries Ltd. Electrodeionization apparatus
AU2005284666B2 (en) 2004-09-17 2010-01-28 Gekko Systems Pty Ltd Separation apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4687561A (en) * 1982-05-13 1987-08-18 Gerhard Kunz Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions
EP0170895B1 (en) * 1984-07-09 1989-03-22 Millipore Corporation Improved electrodeionization apparatus and method
GB2311999A (en) * 1996-04-12 1997-10-15 Elga Group Services Ltd Electrodialysis using ion-depleted water
WO1998051620A1 (en) * 1997-05-09 1998-11-19 Usf Filtration And Separations Group Inc. Purification of a liquid stream

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4687561A (en) * 1982-05-13 1987-08-18 Gerhard Kunz Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions
EP0170895B1 (en) * 1984-07-09 1989-03-22 Millipore Corporation Improved electrodeionization apparatus and method
GB2311999A (en) * 1996-04-12 1997-10-15 Elga Group Services Ltd Electrodialysis using ion-depleted water
WO1998051620A1 (en) * 1997-05-09 1998-11-19 Usf Filtration And Separations Group Inc. Purification of a liquid stream

Also Published As

Publication number Publication date
WO2000067906A1 (en) 2000-11-16
GB2355213B (en) 2003-01-15
GB0100132D0 (en) 2001-02-14
WO2000067906A9 (en) 2001-12-27
GB9910550D0 (en) 1999-07-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
711B Application made for correction of error (sect. 117/77)
711G Correction allowed (sect. 117/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20111222 AND 20111223

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20190503