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GB2295821B - Process for purifying chromium-containing wastewaters - Google Patents

Process for purifying chromium-containing wastewaters

Info

Publication number
GB2295821B
GB2295821B GB9524313A GB9524313A GB2295821B GB 2295821 B GB2295821 B GB 2295821B GB 9524313 A GB9524313 A GB 9524313A GB 9524313 A GB9524313 A GB 9524313A GB 2295821 B GB2295821 B GB 2295821B
Authority
GB
United Kingdom
Prior art keywords
containing wastewaters
purifying chromium
purifying
chromium
wastewaters
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.)
Expired - Fee Related
Application number
GB9524313A
Other versions
GB2295821A (en
GB9524313D0 (en
Inventor
Veronique Faivre-Buet
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.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba Spezialitaetenchemie Holding AG
Ciba SC Holding AG
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 Ciba Geigy AG, Ciba Spezialitaetenchemie Holding AG, Ciba SC Holding AG filed Critical Ciba Geigy AG
Publication of GB9524313D0 publication Critical patent/GB9524313D0/en
Publication of GB2295821A publication Critical patent/GB2295821A/en
Application granted granted Critical
Publication of GB2295821B publication Critical patent/GB2295821B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • B01D61/16—Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; 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
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
GB9524313A 1994-12-08 1995-11-28 Process for purifying chromium-containing wastewaters Expired - Fee Related GB2295821B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH372694 1994-12-08

Publications (3)

Publication Number Publication Date
GB9524313D0 GB9524313D0 (en) 1996-01-31
GB2295821A GB2295821A (en) 1996-06-12
GB2295821B true GB2295821B (en) 1998-04-15

Family

ID=4262196

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9524313A Expired - Fee Related GB2295821B (en) 1994-12-08 1995-11-28 Process for purifying chromium-containing wastewaters

Country Status (3)

Country Link
DE (1) DE19545546A1 (en)
FR (1) FR2727959B1 (en)
GB (1) GB2295821B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010071598A1 (en) * 2008-12-17 2010-06-24 Hydrochem (S) Pte Ltd High temperature removal of organic compounds from waste water using reverse osmosis
CN115367924B (en) * 2022-09-22 2024-04-16 武汉纺织大学 Method for treating chromium-containing wastewater by using thiourea dioxide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1937567A1 (en) * 1969-07-24 1971-02-11 Abend Dr Ing Rudolf Detoxication of industrial waste water
JPS5230260A (en) * 1975-09-03 1977-03-07 Hitachi Seiko Ltd Treatment process and treatment apparatus for electrolyte
JPS57190692A (en) * 1981-05-18 1982-11-24 Hitachi Plant Eng & Constr Co Ltd Treatment of chromic acid containing waste water
SU1456371A1 (en) * 1986-08-14 1989-02-07 Воронежский сельскохозяйственный институт им.К.Д.Глинки Method of purifying waste water from hexavalent chromium
US5403490A (en) * 1992-11-23 1995-04-04 Desai; Satish Process and apparatus for removing solutes from solutions

Also Published As

Publication number Publication date
GB2295821A (en) 1996-06-12
GB9524313D0 (en) 1996-01-31
FR2727959A1 (en) 1996-06-14
DE19545546A1 (en) 1996-06-13
FR2727959B1 (en) 1997-12-19

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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: 19991128