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ES8308810A1 - Process for purifying fluoride-containing waste waters - Google Patents

Process for purifying fluoride-containing waste waters

Info

Publication number
ES8308810A1
ES8308810A1 ES514299A ES514299A ES8308810A1 ES 8308810 A1 ES8308810 A1 ES 8308810A1 ES 514299 A ES514299 A ES 514299A ES 514299 A ES514299 A ES 514299A ES 8308810 A1 ES8308810 A1 ES 8308810A1
Authority
ES
Spain
Prior art keywords
containing waste
waste waters
fluoride
purifying fluoride
purifying
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
ES514299A
Other languages
Spanish (es)
Other versions
ES514299A0 (en
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of ES514299A0 publication Critical patent/ES514299A0/en
Publication of ES8308810A1 publication Critical patent/ES8308810A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/48—Halides, with or without other cations besides aluminium
    • C01F7/50—Fluorides
    • C01F7/54—Double compounds containing both aluminium and alkali metals or alkaline-earth metals
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The present invention relates to a process for the purification of fluoride-containing waste waters, alkali metal aluminates being added to the fluoride-containing waste waters and the resulting solids being separated off. These solids can then be reused as starting materials, eg. in cryolite production.
ES514299A 1981-07-25 1982-07-23 Process for purifying fluoride-containing waste waters Expired ES8308810A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813129473 DE3129473A1 (en) 1981-07-25 1981-07-25 Process for purifying fluoride-containing waste waters

Publications (2)

Publication Number Publication Date
ES514299A0 ES514299A0 (en) 1983-10-01
ES8308810A1 true ES8308810A1 (en) 1983-10-01

Family

ID=6137784

Family Applications (1)

Application Number Title Priority Date Filing Date
ES514299A Expired ES8308810A1 (en) 1981-07-25 1982-07-23 Process for purifying fluoride-containing waste waters

Country Status (2)

Country Link
DE (1) DE3129473A1 (en)
ES (1) ES8308810A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2193854A1 (en) * 2001-11-23 2003-11-01 Elcogas S A Removal of fluoride from waste water consists of acidity adjustment prior to addition of calcium chloride and an organic cationic flocculating agent

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587021A1 (en) * 1985-09-06 1987-03-13 Pechiney Aluminium PROCESS FOR RECOVERING SODIUM ALUMINATE CONTAINED IN RED SLUDGE
NL1011698C2 (en) * 1999-03-30 2000-10-03 Ind Tech Res Inst Removal of fluoride from waste water comprises using a fluid bed crystallizer with a support, adding a water-soluble sodium and aluminum reagents to form cryolite and removing the treated water
CN1865173B (en) * 2005-05-20 2010-10-20 廖明辉 Fluorine-containing wastewater treatment method and treatment agent thereof
WO2015118002A1 (en) * 2014-02-07 2015-08-13 Lanxess Deutschland Gmbh Novel aluminum-doped, iminodiacetic acid group-containing chelate resins
EP3325524B1 (en) 2015-07-20 2019-02-27 Lanxess Deutschland GmbH Aluminium-doped, iminoacetic acid group-containing chelate resins

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2637048A1 (en) * 1975-09-10 1977-03-17 Deguchi Kohei METHOD OF REMOVING FLUORIONS FROM WATER
FR2458513A1 (en) * 1979-06-05 1981-01-02 Degremont Removing fluoride from effluent esp. from aluminium mfr. - by flocculating, decanting and precipitating as cryolite with aluminate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2193854A1 (en) * 2001-11-23 2003-11-01 Elcogas S A Removal of fluoride from waste water consists of acidity adjustment prior to addition of calcium chloride and an organic cationic flocculating agent
ES2193854B1 (en) * 2001-11-23 2005-03-01 Elcogas, S.A. PROCEDURE FOR THE ELIMINATION OF FLUORIDE IN WASTEWATER.

Also Published As

Publication number Publication date
ES514299A0 (en) 1983-10-01
DE3129473A1 (en) 1983-02-10

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