JPS54156345A - Purification of metal plating waste water - Google Patents
Purification of metal plating waste waterInfo
- Publication number
- JPS54156345A JPS54156345A JP6613078A JP6613078A JPS54156345A JP S54156345 A JPS54156345 A JP S54156345A JP 6613078 A JP6613078 A JP 6613078A JP 6613078 A JP6613078 A JP 6613078A JP S54156345 A JPS54156345 A JP S54156345A
- Authority
- JP
- Japan
- Prior art keywords
- added
- waste water
- solution
- purification
- metal plating
- 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
Links
Abstract
PURPOSE: To provide a method of the purification of metal plating waste water, wherein to waste water containing EDTA, HCHO, Cu, etc. are added a mineral acid, an oxidizing agent, a ferrous salt and an alkali in this order so that organic contaminants in the waste water can be decomposed and removed with a higher elimination rate.
CONSTITUTION: In order to decompose and remove organic contaminants with a higher elimination rate from a chemical copper plating solution, which dose not mean a copper electroplating solution containing cyanide compounds, for example a chemical copper plating waste solution containing EDTA, HCHO, Cu, etc., a mineral acid, such as sulfuric acid is added to the waste solution to adjust its pH value to 1 to 2, the resulting precipitate is removed, then the filtrate (if desired, this filtrate is subjected to electrolysis to separate off copper for recovery) is added with an oxidizing agent such as hydrogen peroxide, oxidizing agents containing chlorine or the like to be subjected to oxidizing treatment and then is added with a ferrous salt, thereafter is added with an alkali (NaOH) to adjust its pH value to between 4 and 10 so that precipitation will be resulted, and a gas containing oxygen is introduced into the thus treated solution to floculate the precipitate to be removed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6613078A JPS54156345A (en) | 1978-05-31 | 1978-05-31 | Purification of metal plating waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6613078A JPS54156345A (en) | 1978-05-31 | 1978-05-31 | Purification of metal plating waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54156345A true JPS54156345A (en) | 1979-12-10 |
| JPS5642999B2 JPS5642999B2 (en) | 1981-10-08 |
Family
ID=13306969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6613078A Granted JPS54156345A (en) | 1978-05-31 | 1978-05-31 | Purification of metal plating waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54156345A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1502963A1 (en) * | 2003-08-01 | 2005-02-02 | Rohm and Haas Electronic Materials, L.L.C. | Recovery of metals from azole containing waste fluid by ozonization and electrolysis |
| CN106396205A (en) * | 2016-08-30 | 2017-02-15 | 盛隆资源再生（无锡）有限公司 | Method for removing heavy metal by carrying out cyanide breaking on high-concentration cyanide wastewater |
| CN110615557A (en) * | 2019-10-16 | 2019-12-27 | 镇江市和云工业废水处置有限公司 | Treatment process of electroless copper plating wastewater |
| CN113620485A (en) * | 2021-09-14 | 2021-11-09 | 万安裕维电子有限公司 | Treatment method of PCB production waste liquid |
-
1978
- 1978-05-31 JP JP6613078A patent/JPS54156345A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1502963A1 (en) * | 2003-08-01 | 2005-02-02 | Rohm and Haas Electronic Materials, L.L.C. | Recovery of metals from azole containing waste fluid by ozonization and electrolysis |
| CN106396205A (en) * | 2016-08-30 | 2017-02-15 | 盛隆资源再生（无锡）有限公司 | Method for removing heavy metal by carrying out cyanide breaking on high-concentration cyanide wastewater |
| CN106396205B (en) * | 2016-08-30 | 2019-06-14 | 盛隆资源再生（无锡）有限公司 | A kind of method of high concentration cyanide wastewater broken cyanide removing heavy metals |
| CN110615557A (en) * | 2019-10-16 | 2019-12-27 | 镇江市和云工业废水处置有限公司 | Treatment process of electroless copper plating wastewater |
| CN113620485A (en) * | 2021-09-14 | 2021-11-09 | 万安裕维电子有限公司 | Treatment method of PCB production waste liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5642999B2 (en) | 1981-10-08 |
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