JPS54156346A - Purification of metal plating waste water - Google Patents
Purification of metal plating waste waterInfo
- Publication number
- JPS54156346A JPS54156346A JP6613178A JP6613178A JPS54156346A JP S54156346 A JPS54156346 A JP S54156346A JP 6613178 A JP6613178 A JP 6613178A JP 6613178 A JP6613178 A JP 6613178A JP S54156346 A JPS54156346 A JP S54156346A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- added
- alkali
- adjust
- mineral acid
- 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 the waste water containing ESTA, HCHO, Cu, etc. are added an alkali, a mineral acid, an alkali, an oxidizing agent, a mineral acid and activated carbon in this order so that organic contaminants in the waste water can be removed with a higher elimination rate.
CONSTITUTION: Chemical copper plating waste water containing EDTA, HCHO, Cu, etc. is added with an alkali such as slaked lime to adjust its pH value to not less than 12, the resulting precipitate is removed, the filtrate is added with a mineral acid to adjust its pH value to between 1 and 3, the second resulting precipitate is removed, the second filtrate is added with an alkali such as NaOH to adjust its pH value to between 10 and 13, then is added with an oxidizing agent such as hydrogen peroxide followed by its pH adjustment to between 2 and 4, and after the thus treated waste water is added with activated carbon, the solid portion and liquid portion are separated. In the present method, organic contaminants which hitherto has not been removed by a conventional method using a ferric salt, an aluminium salt, NaOH and high polymeric flocculant can be effectively removed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6613178A JPS54156346A (en) | 1978-05-31 | 1978-05-31 | Purification of metal plating waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6613178A JPS54156346A (en) | 1978-05-31 | 1978-05-31 | Purification of metal plating waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54156346A true JPS54156346A (en) | 1979-12-10 |
| JPS5643000B2 JPS5643000B2 (en) | 1981-10-08 |
Family
ID=13306996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6613178A Granted JPS54156346A (en) | 1978-05-31 | 1978-05-31 | Purification of metal plating waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54156346A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60140391A (en) * | 1983-12-28 | 1985-07-25 | カシオ計算機株式会社 | Mode display unit |
| CN106087031A (en) * | 2016-08-09 | 2016-11-09 | 胜宏科技（惠州）股份有限公司 | A kind of organic method in removal electroplate liquid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054357A (en) * | 2019-04-23 | 2019-07-26 | 陈淡宁 | The comprehensive processing method of heavy metal and organic pollution water body |
-
1978
- 1978-05-31 JP JP6613178A patent/JPS54156346A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60140391A (en) * | 1983-12-28 | 1985-07-25 | カシオ計算機株式会社 | Mode display unit |
| CN106087031A (en) * | 2016-08-09 | 2016-11-09 | 胜宏科技（惠州）股份有限公司 | A kind of organic method in removal electroplate liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5643000B2 (en) | 1981-10-08 |
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