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JPS56166987A - Removal of fluorine from fluorine-contng. aqueous solution - Google Patents

Removal of fluorine from fluorine-contng. aqueous solution

Info

Publication number
JPS56166987A
JPS56166987A JP7053880A JP7053880A JPS56166987A JP S56166987 A JPS56166987 A JP S56166987A JP 7053880 A JP7053880 A JP 7053880A JP 7053880 A JP7053880 A JP 7053880A JP S56166987 A JPS56166987 A JP S56166987A
Authority
JP
Japan
Prior art keywords
aqueous solution
separated
contng
flocks
fluorine
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
JP7053880A
Other languages
Japanese (ja)
Other versions
JPS6044995B2 (en
Inventor
Tamotsu Awata
Shigeo Furuya
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries 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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP7053880A priority Critical patent/JPS6044995B2/en
Publication of JPS56166987A publication Critical patent/JPS56166987A/en
Publication of JPS6044995B2 publication Critical patent/JPS6044995B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Water Treatment By Sorption (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

PURPOSE: To remove fluorinei on from waste with high efficiency, in an aluminum hydroxide coprecipitation method, by brinding a fluorine-contng. aqueous solution in contact with precipitated aluminum hydroxide, and cyclng a resultant separated liquid for coprecipitation.
CONSTITUTION: The mixed solution of an Al component-contg. aqueous solution 15 with a F-contng. cycling aqueous solution 16 separated from sludge is introduced into a neutralizing vessel 18, where the mixed solution is adjusted at a pH level suitable for generation of Al(OH)3. As a result, Al(OH)3 is precipitated, coagulated, and separated as flocks in a pressure floating vessel 21. The separated water is discharged, while the flocks are mixed again with the aqueous solution in a mixing vessel 23, so that it is not necessary to completely dehydrate the flocks. A F- contng. aqueous solution 24 to be disposed is introduced into the vessel 23, mixed with said flocks at a proper ratio, and separated as completely as possible by a centrifugal hydroextractor 17 or the like. The separated Al(OH)3 sludge is taken out. About 80W90% or more of F ion is absorbed in the Al(OH)3 sludge, while a small portion of the F-contng. separated water is cycled along a line 16.
COPYRIGHT: (C)1981,JPO&Japio
JP7053880A 1980-05-26 1980-05-26 Method for removing fluorine from a fluorine-containing aqueous solution Expired JPS6044995B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7053880A JPS6044995B2 (en) 1980-05-26 1980-05-26 Method for removing fluorine from a fluorine-containing aqueous solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7053880A JPS6044995B2 (en) 1980-05-26 1980-05-26 Method for removing fluorine from a fluorine-containing aqueous solution

Publications (2)

Publication Number Publication Date
JPS56166987A true JPS56166987A (en) 1981-12-22
JPS6044995B2 JPS6044995B2 (en) 1985-10-07

Family

ID=13434403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7053880A Expired JPS6044995B2 (en) 1980-05-26 1980-05-26 Method for removing fluorine from a fluorine-containing aqueous solution

Country Status (1)

Country Link
JP (1) JPS6044995B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706973A1 (en) 1994-10-11 1996-04-17 Elf Atochem S.A. Preparation of aqueous solutions of tetrafluoroboric acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706973A1 (en) 1994-10-11 1996-04-17 Elf Atochem S.A. Preparation of aqueous solutions of tetrafluoroboric acid

Also Published As

Publication number Publication date
JPS6044995B2 (en) 1985-10-07

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