GB2331714A - Water treatment - Google Patents

Water treatment

Info

Publication number
GB2331714A
GB2331714A GB9822629A GB9822629A GB2331714A GB 2331714 A GB2331714 A GB 2331714A GB 9822629 A GB9822629 A GB 9822629A GB 9822629 A GB9822629 A GB 9822629A GB 2331714 A GB2331714 A GB 2331714A
Authority
GB
United Kingdom
Prior art keywords
water
water treatment
colour
membrane
filtration
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
GB9822629A
Other versions
GB9822629D0 (en
GB2331714B (en
Inventor
Stephen Andrew Boler
James Derek Campbell
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.)
Ricardo AEA Ltd
Original Assignee
AEA Technology PLC
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
Priority claimed from GBGB9608344.9A external-priority patent/GB9608344D0/en
Application filed by AEA Technology PLC filed Critical AEA Technology PLC
Priority to GB9822629A priority Critical patent/GB2331714B/en
Publication of GB9822629D0 publication Critical patent/GB9822629D0/en
Publication of GB2331714A publication Critical patent/GB2331714A/en
Application granted granted Critical
Publication of GB2331714B publication Critical patent/GB2331714B/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
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • 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
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/147—Microfiltration
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration

Abstract

Colour due to humic material in water is removed by subjecting the water to cross-flow filtration. The filtration membrane is an ultrafiltration or microfiltration membrane, with pores of about 10 000 MWCO up to about 0.5 Ám, and is preferably of inorganic material such as zirconia on a porous substrate. The process removes colour, particulates, and micro-organisms in a single step, and achieves adequate permeation rates.
GB9822629A 1996-04-23 1997-04-18 Water treatment Expired - Fee Related GB2331714B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9822629A GB2331714B (en) 1996-04-23 1997-04-18 Water treatment

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9608344.9A GB9608344D0 (en) 1996-04-23 1996-04-23 Water Treatment
GB9822629A GB2331714B (en) 1996-04-23 1997-04-18 Water treatment
PCT/GB1997/001076 WO1997039981A1 (en) 1996-04-23 1997-04-18 Water treatment

Publications (3)

Publication Number Publication Date
GB9822629D0 GB9822629D0 (en) 1998-12-09
GB2331714A true GB2331714A (en) 1999-06-02
GB2331714B GB2331714B (en) 2000-09-27

Family

ID=26309187

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9822629A Expired - Fee Related GB2331714B (en) 1996-04-23 1997-04-18 Water treatment

Country Status (1)

Country Link
GB (1) GB2331714B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758405A (en) * 1971-11-03 1973-09-11 Plywood Champion Papers Inc Color removal from kraft mill aqueous effluents
FR2365523A1 (en) * 1976-09-22 1978-04-21 Centre Tech Ind Papier Treating effluent from paper pulp bleaching - by decolourising and ultrafiltering to remove chloride ions
EP0467735A1 (en) * 1990-07-03 1992-01-22 Alcoa Separations Technology Inc. Pyrogen separations by ceramic ultrafiltration
US5285903A (en) * 1992-10-13 1994-02-15 Sorenson Blaine F Method for recovering particulate and scavenging formaldehyde in a wood panel fabrication process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505841A (en) * 1991-03-11 1996-04-09 Pirbazari; Massoud Microfiltration and adsorbent particle suspension for removing contaminants from water

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758405A (en) * 1971-11-03 1973-09-11 Plywood Champion Papers Inc Color removal from kraft mill aqueous effluents
FR2365523A1 (en) * 1976-09-22 1978-04-21 Centre Tech Ind Papier Treating effluent from paper pulp bleaching - by decolourising and ultrafiltering to remove chloride ions
EP0467735A1 (en) * 1990-07-03 1992-01-22 Alcoa Separations Technology Inc. Pyrogen separations by ceramic ultrafiltration
US5285903A (en) * 1992-10-13 1994-02-15 Sorenson Blaine F Method for recovering particulate and scavenging formaldehyde in a wood panel fabrication process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF MEMBRANE SCIENCE vol.101 no.1/02 15 May 1995 pages 67-81 Porter JJ et al *

Also Published As

Publication number Publication date
GB9822629D0 (en) 1998-12-09
GB2331714B (en) 2000-09-27

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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)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050418