JPS55132686A - Method for treatment of fluorine-containing waste water - Google Patents
Method for treatment of fluorine-containing waste waterInfo
- Publication number
- JPS55132686A JPS55132686A JP3996479A JP3996479A JPS55132686A JP S55132686 A JPS55132686 A JP S55132686A JP 3996479 A JP3996479 A JP 3996479A JP 3996479 A JP3996479 A JP 3996479A JP S55132686 A JPS55132686 A JP S55132686A
- Authority
- JP
- Japan
- Prior art keywords
- fluorine
- waste water
- salt
- treatment
- reaction
- 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.)
- Pending
Links
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
PURPOSE: To simplify the removal treatment process for fluorine as well as save the cost of raw materials by the procedure in which a Ca salt is added to a fluorine- containing mixed waste water and then solid phase formed is separated.
CONSTITUTION: A Ca salt, e.g., Ca(OH)2, etc., is added to a fluorine-containing mixed waste water obtained by mixing a waste water containing an aluminum fluoride, e.g., AlF3, etc., with an alkali fluoride, e.g., NaF, etc., to cause them to react with each other at ordinary temperature for approx. 10min or the more, usually 30W60min. If the pH of the waste water after the reaction is 5.8W8.6, neutralization using a mineral acid is not requried. Then, solid, e.g., CaF2, etc., formed by the reaction is separated to remove the fluorine content from the fluorine-containing waste water.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3996479A JPS55132686A (en) | 1979-04-03 | 1979-04-03 | Method for treatment of fluorine-containing waste water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3996479A JPS55132686A (en) | 1979-04-03 | 1979-04-03 | Method for treatment of fluorine-containing waste water |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55132686A true JPS55132686A (en) | 1980-10-15 |
Family
ID=12567636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3996479A Pending JPS55132686A (en) | 1979-04-03 | 1979-04-03 | Method for treatment of fluorine-containing waste water |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55132686A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006055728A (en) * | 2004-08-19 | 2006-03-02 | Matsushita Electric Ind Co Ltd | Method and apparatus for treating fluorine-containing wastewater |
-
1979
- 1979-04-03 JP JP3996479A patent/JPS55132686A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006055728A (en) * | 2004-08-19 | 2006-03-02 | Matsushita Electric Ind Co Ltd | Method and apparatus for treating fluorine-containing wastewater |
JP4661132B2 (en) * | 2004-08-19 | 2011-03-30 | パナソニック株式会社 | Method and apparatus for treating fluorine-containing wastewater |
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