JPS55155785A - Treating method of waste water containing borofluoride - Google Patents
Treating method of waste water containing borofluorideInfo
- Publication number
- JPS55155785A JPS55155785A JP6259979A JP6259979A JPS55155785A JP S55155785 A JPS55155785 A JP S55155785A JP 6259979 A JP6259979 A JP 6259979A JP 6259979 A JP6259979 A JP 6259979A JP S55155785 A JPS55155785 A JP S55155785A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- hydroxide
- water containing
- containing borofluoride
- treating method
- 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
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Removal Of Specific Substances (AREA)
Abstract
PURPOSE: To reduce the escaping amount of F2 and perform evaporation and concentration efficiently without producing any scale by adding the hydroxide of alkaline (earth) metals to the waste water containing borofluoride from solder plating bath or the like, controlling the same to the specific pH and separating the hydroxide then evaporating and concentrating the solution.
CONSTITUTION: The hydroxide of alkaline (earth) metals (for example, NaOH, KOH) is added to the waste water containing borofluoride from solder plating bath or the like and its pH is controlled to 8 or more. Next, the hydroxide formed is separated away, after which the waste water is evaporated and concentrated. According to this method, no scale is generated in the concentrated solution and therefore the efficiency of evaporation-concentration treatment may be improved and further the F2 escaping amount in the evaporating vapor may be decreased.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6259979A JPS55155785A (en) | 1979-05-23 | 1979-05-23 | Treating method of waste water containing borofluoride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6259979A JPS55155785A (en) | 1979-05-23 | 1979-05-23 | Treating method of waste water containing borofluoride |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55155785A true JPS55155785A (en) | 1980-12-04 |
Family
ID=13204945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6259979A Pending JPS55155785A (en) | 1979-05-23 | 1979-05-23 | Treating method of waste water containing borofluoride |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55155785A (en) |
-
1979
- 1979-05-23 JP JP6259979A patent/JPS55155785A/en active Pending
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