JPS55104692A - Purifying treatment of fluorine-containing waste water - Google Patents
Purifying treatment of fluorine-containing waste waterInfo
- Publication number
- JPS55104692A JPS55104692A JP1266079A JP1266079A JPS55104692A JP S55104692 A JPS55104692 A JP S55104692A JP 1266079 A JP1266079 A JP 1266079A JP 1266079 A JP1266079 A JP 1266079A JP S55104692 A JPS55104692 A JP S55104692A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- fluorine
- amount
- purifying treatment
- slaked lime
- 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 reduce the amount of sludge generated by purifying treatment as well as precipitate and remove effectively fluorine present in waste water in form of calcium fluoride.
CONSTITUTION: An acid waste water containing fluorine is mixed with a water- soluble calcium salt, e.g., calcium chloride, etc., and then mixed with slaked lime to regulate its pH to 2W6 to form calcium fluoride. Then, slaked lime is added to the waste water to regulate its pH to 7W10 to precipitate calcium fluoride which is, in turn, removed. Thus, the amount of water-soluble calcium salt and slaked lime used can be more greatly reduced than the conventional methods and also the removal of fluorine can be effectively attained and the amount of sludge generated can also be greatly reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1266079A JPS55104692A (en) | 1979-02-05 | 1979-02-05 | Purifying treatment of fluorine-containing waste water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1266079A JPS55104692A (en) | 1979-02-05 | 1979-02-05 | Purifying treatment of fluorine-containing waste water |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55104692A true JPS55104692A (en) | 1980-08-11 |
Family
ID=11811509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1266079A Pending JPS55104692A (en) | 1979-02-05 | 1979-02-05 | Purifying treatment of fluorine-containing waste water |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55104692A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS631787U (en) * | 1986-06-20 | 1988-01-07 | ||
EP1716081A4 (en) * | 2004-01-21 | 2010-06-02 | Morita Chemical Ind Co Ltd | Method for producing calcium fluoride, reusing method and recycling method thereof |
-
1979
- 1979-02-05 JP JP1266079A patent/JPS55104692A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS631787U (en) * | 1986-06-20 | 1988-01-07 | ||
JPH0427833Y2 (en) * | 1986-06-20 | 1992-07-03 | ||
EP1716081A4 (en) * | 2004-01-21 | 2010-06-02 | Morita Chemical Ind Co Ltd | Method for producing calcium fluoride, reusing method and recycling method thereof |
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