EP1042231A4 - Process for removing silica from wastewater - Google Patents

Process for removing silica from wastewater

Info

Publication number
EP1042231A4
EP1042231A4 EP98952200A EP98952200A EP1042231A4 EP 1042231 A4 EP1042231 A4 EP 1042231A4 EP 98952200 A EP98952200 A EP 98952200A EP 98952200 A EP98952200 A EP 98952200A EP 1042231 A4 EP1042231 A4 EP 1042231A4
Authority
EP
European Patent Office
Prior art keywords
wastewater
removing silica
silica
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.)
Withdrawn
Application number
EP98952200A
Other languages
German (de)
French (fr)
Other versions
EP1042231A1 (en
Inventor
Stephen D Allen
Leonard R Lyman
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.)
Microbar Inc
Original Assignee
Microbar Inc
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 US08/965,574 external-priority patent/US5965027A/en
Application filed by Microbar Inc filed Critical Microbar Inc
Publication of EP1042231A1 publication Critical patent/EP1042231A1/en
Publication of EP1042231A4 publication Critical patent/EP1042231A4/en
Withdrawn legal-status Critical Current

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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • 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
    • 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
    • B01D61/16—Feed pretreatment
    • 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
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/346—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from semiconductor processing, e.g. waste water from polishing of wafers
EP98952200A 1997-11-06 1998-10-09 Process for removing silica from wastewater Withdrawn EP1042231A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US965574 1997-11-06
US08/965,574 US5965027A (en) 1996-11-26 1997-11-06 Process for removing silica from wastewater
PCT/US1998/021337 WO1999024364A1 (en) 1997-11-06 1998-10-09 Process for removing silica from wastewater

Publications (2)

Publication Number Publication Date
EP1042231A1 EP1042231A1 (en) 2000-10-11
EP1042231A4 true EP1042231A4 (en) 2002-07-17

Family

ID=25510161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98952200A Withdrawn EP1042231A4 (en) 1997-11-06 1998-10-09 Process for removing silica from wastewater

Country Status (6)

Country Link
EP (1) EP1042231A4 (en)
JP (1) JP3470130B2 (en)
KR (1) KR100385706B1 (en)
AU (1) AU9795498A (en)
TW (1) TW425376B (en)
WO (1) WO1999024364A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3557197B2 (en) * 2002-05-17 2004-08-25 三洋電機株式会社 Filtration method of colloid solution
JP4177369B2 (en) * 2005-05-09 2008-11-05 株式会社関西都市居住サービス A method for treating silica-containing water and an open circulation type cooling water system using the treated water.
CA2620058A1 (en) * 2005-08-24 2007-03-01 Tokuyama Corporation Method of treating silicon powder-containing drainage water
JP5731794B2 (en) * 2010-11-02 2015-06-10 アクアス株式会社 Coagulation treatment method for high-concentration silica-containing water
JP7213125B2 (en) * 2019-04-08 2023-01-26 オルガノ株式会社 Coagulation-sedimentation device for water containing silica and coagulation-sedimentation treatment method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04256492A (en) * 1991-02-08 1992-09-11 Nok Corp Method for removing colloidal silica
US5344572A (en) * 1992-07-10 1994-09-06 Wadhawan Satish C Method for treating waste pickle liquor
US5415782A (en) * 1993-11-22 1995-05-16 Nalco Chemical Company Method for the alteration of siliceous materials from bayer process liquors
US5620629A (en) * 1995-09-28 1997-04-15 Nalco Chemical Company Colloidal silica/polyelectrolyte blends for natural water clarification
JPH1034161A (en) * 1996-07-22 1998-02-10 Ebara Corp Treatment of silica-containing waste water
JPH10180008A (en) * 1996-12-26 1998-07-07 Kurita Water Ind Ltd Membrane separation device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188291A (en) * 1978-04-06 1980-02-12 Anderson Donald R Treatment of industrial waste water
US4207183A (en) * 1978-05-11 1980-06-10 Resources Conservation Company Prevention of solute deposition fouling in membrane processes
JPS6458304A (en) * 1987-08-28 1989-03-06 Kurita Water Ind Ltd Removing method for silica contained in pickling waste liquid
JPH03288532A (en) * 1990-04-02 1991-12-18 Fuji Photo Film Co Ltd Micro-filter membrane cartridge filter
JP2792354B2 (en) * 1991-07-23 1998-09-03 ダイキン工業株式会社 Polytetrafluoroethylene porous membrane
JP2938270B2 (en) * 1992-04-27 1999-08-23 日本製紙株式会社 Waste paper pulp wastewater treatment method
US5286390A (en) * 1992-09-30 1994-02-15 Calgon Corporation Method for treating deink wastes using melamine aldehyde-type polymers
US5413719A (en) * 1994-01-18 1995-05-09 Nalco Chemical Company Fluorescent tracer in a water treatment process
JP3003500B2 (en) * 1994-04-28 2000-01-31 ダイキン工業株式会社 Polytetrafluoroethylene composite porous membrane
US5609765A (en) * 1994-05-19 1997-03-11 Bowman; Ronald W. Steam stripping method for the softening of water
JP3348341B2 (en) * 1996-07-08 2002-11-20 ソニー株式会社 Polymer flocculant and wastewater treatment method
JPH1076277A (en) * 1996-09-04 1998-03-24 Lion Corp Chemical composition for water treatment and water treatment method using the same
JPH10118665A (en) * 1996-10-15 1998-05-12 Kurita Water Ind Ltd Treatment of nh4 type cmp waste solution

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04256492A (en) * 1991-02-08 1992-09-11 Nok Corp Method for removing colloidal silica
US5344572A (en) * 1992-07-10 1994-09-06 Wadhawan Satish C Method for treating waste pickle liquor
US5415782A (en) * 1993-11-22 1995-05-16 Nalco Chemical Company Method for the alteration of siliceous materials from bayer process liquors
US5620629A (en) * 1995-09-28 1997-04-15 Nalco Chemical Company Colloidal silica/polyelectrolyte blends for natural water clarification
JPH1034161A (en) * 1996-07-22 1998-02-10 Ebara Corp Treatment of silica-containing waste water
JPH10180008A (en) * 1996-12-26 1998-07-07 Kurita Water Ind Ltd Membrane separation device

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 042 (C - 1020) 26 January 1993 (1993-01-26) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06 30 April 1998 (1998-04-30) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 12 31 October 1998 (1998-10-31) *
See also references of WO9924364A1 *

Also Published As

Publication number Publication date
JP3470130B2 (en) 2003-11-25
JP2001522720A (en) 2001-11-20
EP1042231A1 (en) 2000-10-11
WO1999024364A1 (en) 1999-05-20
KR20010031846A (en) 2001-04-16
AU9795498A (en) 1999-05-31
KR100385706B1 (en) 2003-05-27
TW425376B (en) 2001-03-11

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