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GB1037764A - Method of eliminating hydrofluoric acid from sewage - Google Patents

Method of eliminating hydrofluoric acid from sewage

Info

Publication number
GB1037764A
GB1037764A GB1725363A GB1725363A GB1037764A GB 1037764 A GB1037764 A GB 1037764A GB 1725363 A GB1725363 A GB 1725363A GB 1725363 A GB1725363 A GB 1725363A GB 1037764 A GB1037764 A GB 1037764A
Authority
GB
United Kingdom
Prior art keywords
sewage
eliminating
hydrofluoric acid
precipitation
treating
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
Application number
GB1725363A
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.)
VTW Anlagen UK Ltd
Original Assignee
Water Engineering 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 Water Engineering Ltd filed Critical Water Engineering Ltd
Publication of GB1037764A publication Critical patent/GB1037764A/en
Expired 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
    • C02F1/58—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
    • 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
    • C02F1/5209—Regulation methods for flocculation or precipitation
    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

Fluoride ions are removed from sewage by treating with caustic soda and calcium chloride under conditions precluding the precipitation of calcium hydroxide.
GB1725363A 1962-05-25 1963-05-01 Method of eliminating hydrofluoric acid from sewage Expired GB1037764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1962A0040298 DE1265071B (en) 1962-05-25 1962-05-25 Process for the continuous or discontinuous, quantitative precipitation of free and / or salt-bound hydrofluoric acid dissolved in waste water

Publications (1)

Publication Number Publication Date
GB1037764A true GB1037764A (en) 1966-08-03

Family

ID=6931886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1725363A Expired GB1037764A (en) 1962-05-25 1963-05-01 Method of eliminating hydrofluoric acid from sewage

Country Status (2)

Country Link
DE (1) DE1265071B (en)
GB (1) GB1037764A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487217A1 (en) * 1990-11-19 1992-05-27 Imperial Chemical Industries Plc Treatment of dilute acidic solutions
CN105254060A (en) * 2015-10-14 2016-01-20 福建龙氟化工有限公司 Comprehensive treatment method for waste gas and waste water produced during hydrogen fluoride production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914290C2 (en) * 1979-04-09 1984-03-08 Klaus-Uwe Dipl.-Chem. Dr. 8000 München Trommsdorff Process for the controlled chemical precipitation of foreign matter from a stream of aqueous liquid and apparatus for carrying out the process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487217A1 (en) * 1990-11-19 1992-05-27 Imperial Chemical Industries Plc Treatment of dilute acidic solutions
CN105254060A (en) * 2015-10-14 2016-01-20 福建龙氟化工有限公司 Comprehensive treatment method for waste gas and waste water produced during hydrogen fluoride production

Also Published As

Publication number Publication date
DE1265071B (en) 1968-03-28

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