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JPS5551487A - Removing fluorine compound in water - Google Patents

Removing fluorine compound in water

Info

Publication number
JPS5551487A
JPS5551487A JP12430478A JP12430478A JPS5551487A JP S5551487 A JPS5551487 A JP S5551487A JP 12430478 A JP12430478 A JP 12430478A JP 12430478 A JP12430478 A JP 12430478A JP S5551487 A JPS5551487 A JP S5551487A
Authority
JP
Japan
Prior art keywords
liquid
amount
fluorine compounds
added
treated
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
JP12430478A
Other languages
Japanese (ja)
Other versions
JPS6044994B2 (en
Inventor
Shiro Ichimura
Hisatsugu Fujii
Kenichi Yaginuma
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.)
Toyo Engineering Corp
Original Assignee
Toyo Engineering Corp
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 Toyo Engineering Corp filed Critical Toyo Engineering Corp
Priority to JP53124304A priority Critical patent/JPS6044994B2/en
Publication of JPS5551487A publication Critical patent/JPS5551487A/en
Publication of JPS6044994B2 publication Critical patent/JPS6044994B2/en
Expired legal-status Critical Current

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  • Removal Of Specific Substances (AREA)

Abstract

PURPOSE: To effectively remove fluorine compounds by precipitation, calcium hydroxide is added for reaction in an amount of more than stoichiometric amount to the content of fluorine compounds in the liquid to be treated, and the reacted liquid is neutralized by carbon dioxide gas.
CONSTITUTION: Liquid to be treated containing fluorine compounds such as ammonium silicofluoride is added with calcium hydoxide in an amount of more than stoichiometric quantity to the content of fluorine compounds and pH of liquid is adjusted to 11 or higher. The mixture is reacted while stirring at 60°C or higher, then coagulant is added to the product to form coagulated precipitate. Carbon dioxide gas is injected into the supernatant to neutralize. The process reduces the total fluorine amount in the treated liquid to about 5ppm.
COPYRIGHT: (C)1980,JPO&Japio
JP53124304A 1978-10-09 1978-10-09 How to remove fluorine compounds in water Expired JPS6044994B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53124304A JPS6044994B2 (en) 1978-10-09 1978-10-09 How to remove fluorine compounds in water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53124304A JPS6044994B2 (en) 1978-10-09 1978-10-09 How to remove fluorine compounds in water

Publications (2)

Publication Number Publication Date
JPS5551487A true JPS5551487A (en) 1980-04-15
JPS6044994B2 JPS6044994B2 (en) 1985-10-07

Family

ID=14882013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53124304A Expired JPS6044994B2 (en) 1978-10-09 1978-10-09 How to remove fluorine compounds in water

Country Status (1)

Country Link
JP (1) JPS6044994B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003080270A (en) * 2001-09-12 2003-03-18 Okutama Kogyo Co Ltd Method for treating fluorine-containing waste water

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PROCEEDING OF INDUSTRIAL WASTE CONFERENCE=1967 *
PROCEEDINGS OF INDUSTRIAL WASTE CONFERENCE=1967 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003080270A (en) * 2001-09-12 2003-03-18 Okutama Kogyo Co Ltd Method for treating fluorine-containing waste water

Also Published As

Publication number Publication date
JPS6044994B2 (en) 1985-10-07

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