JPS55111892A - Method for treatment of waste water containing harmful heavy metal and cyanate thereof - Google Patents
Method for treatment of waste water containing harmful heavy metal and cyanate thereofInfo
- Publication number
- JPS55111892A JPS55111892A JP2016079A JP2016079A JPS55111892A JP S55111892 A JPS55111892 A JP S55111892A JP 2016079 A JP2016079 A JP 2016079A JP 2016079 A JP2016079 A JP 2016079A JP S55111892 A JPS55111892 A JP S55111892A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- cyanate
- electrolysis
- waste water
- water containing
- 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
Abstract
PURPOSE: To remove harmful metals as oxide and CN as N2 and CO2 quantitatively by a method wherein sodium chloride is added to waste water containing Pb.Cu. Ni.Cr or the like and cyanate thereof, and electrolysis is carried out at low voltage to oxidize heavy metals.
CONSTITUTION: Sodium chloride is added to waste water containing Pb.Cu.Ni. Cr.Cd.Fe.Zn and cyanate thereof in a small amount corresponding to a content of a harmful substance and acid. Subsequently, this water is electrolyzed at low voltage of 0.09W10V and each metal is quantitatively removed as oxide as well as CN is quantitatively as N2 and CO2. By this method, because voltage is low as well as electric current is weak, electrolysis of water is controlled and, therefore, an amount bubbles according to the generation of H2 and O2 is reduced. Moreover, electrolysis of sodium chloride is advanced accompanying with electrolysis of metal and generated Cl2 is immediately acted to precipitated metal to convert the said metal to metal oxide. Therefore, this metal oxide is precipitated without depositing to electrode plates.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016079A JPS55111892A (en) | 1979-02-21 | 1979-02-21 | Method for treatment of waste water containing harmful heavy metal and cyanate thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016079A JPS55111892A (en) | 1979-02-21 | 1979-02-21 | Method for treatment of waste water containing harmful heavy metal and cyanate thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55111892A true JPS55111892A (en) | 1980-08-28 |
Family
ID=12019402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016079A Pending JPS55111892A (en) | 1979-02-21 | 1979-02-21 | Method for treatment of waste water containing harmful heavy metal and cyanate thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55111892A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007052618A1 (en) * | 2005-10-31 | 2007-05-10 | Sumitomo Osaka Cement Co., Ltd. | Method for removing metals from waste water and apparatus for removing metals from waste water |
JP2021529259A (en) * | 2018-06-29 | 2021-10-28 | サントル ナショナル ドゥ ラ ルシェルシュ シアンティフィック | Method of decontaminating heavy metals in aqueous solution |
-
1979
- 1979-02-21 JP JP2016079A patent/JPS55111892A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007052618A1 (en) * | 2005-10-31 | 2007-05-10 | Sumitomo Osaka Cement Co., Ltd. | Method for removing metals from waste water and apparatus for removing metals from waste water |
JP2007117965A (en) * | 2005-10-31 | 2007-05-17 | Sumitomo Osaka Cement Co Ltd | Method and apparatus for removing metal from drainage |
US8603344B2 (en) | 2005-10-31 | 2013-12-10 | Sumitomo Osaka Cement Co., Ltd. | Method and apparatus for removing metal from waste water |
JP2021529259A (en) * | 2018-06-29 | 2021-10-28 | サントル ナショナル ドゥ ラ ルシェルシュ シアンティフィック | Method of decontaminating heavy metals in aqueous solution |
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