JPS555735A - Treating method for waste water containing hexavalent chromium - Google Patents
Treating method for waste water containing hexavalent chromiumInfo
- Publication number
- JPS555735A JPS555735A JP7874878A JP7874878A JPS555735A JP S555735 A JPS555735 A JP S555735A JP 7874878 A JP7874878 A JP 7874878A JP 7874878 A JP7874878 A JP 7874878A JP S555735 A JPS555735 A JP S555735A
- Authority
- JP
- Japan
- Prior art keywords
- treating system
- unit
- soln
- treating
- washing
- 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)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
PURPOSE: To recover water and chromium efficiently so as to prevent completely secondary environmental pollution from occurring, by treating waste water contg. chromium divided according to the concentration respectively in one of blocks formed by dividing the treating system.
CONSTITUTION: In a first treating system a, waste liq. (a) discharged from a plating unit 1 is treated through diaphragm electrolysis for a chromic acid-regenerating unit 2, and the regenerated plating soln. is returned to the unit 1. In a second treating system B, conc. waste soln. (c) produced by spray washing of plated articles is subjected to vacuum distillation in a concentrating-recovery unit 5 to produce pure water, which is returned to the washing unit 3, the residual soln. being recycled to the plating unit 1. In a third treating system C, a dilute waste soln. produced by immersion washing 6 of the plated articles is treated 8 through ion exchange to collect hexabalent chromium and other metallic ions, which are desorbed and delivered to a fourth treating system D, recovered water being used once again in washing 6. In the fourth treating system, sludges delivered from the first, second, and third treating systems are reacted 9 with ferrite to form ferrite compounds, which are dehydrated 10 and disposed 11, residual water being used once again.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7874878A JPS555735A (en) | 1978-06-30 | 1978-06-30 | Treating method for waste water containing hexavalent chromium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7874878A JPS555735A (en) | 1978-06-30 | 1978-06-30 | Treating method for waste water containing hexavalent chromium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS555735A true JPS555735A (en) | 1980-01-16 |
Family
ID=13670501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7874878A Pending JPS555735A (en) | 1978-06-30 | 1978-06-30 | Treating method for waste water containing hexavalent chromium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS555735A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57145467A (en) * | 1981-03-04 | 1982-09-08 | Fujitsu Ltd | Calling state separating system |
| JPH0371768A (en) * | 1989-08-11 | 1991-03-27 | Sanyo Electric Co Ltd | Call waiting system |
| KR100496877B1 (en) * | 2002-10-15 | 2005-06-22 | 삼원금속 주식회사 | Apparatus for treating washing water for plating capable of recycling and method thereof |
| KR100496878B1 (en) * | 2002-10-15 | 2005-06-28 | 삼원금속 주식회사 | Apparatus for treating washing water in pretreating of plating process and method thereof |
| KR100509250B1 (en) * | 2002-10-15 | 2005-08-23 | 삼원금속 주식회사 | Apparatus for recovering sexivalent chrome in chromium plating washing water and method thereof |
| CN101781050A (en) * | 2010-03-09 | 2010-07-21 | 江汉大学 | Method for treating low-concentration chromate waste water |
-
1978
- 1978-06-30 JP JP7874878A patent/JPS555735A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57145467A (en) * | 1981-03-04 | 1982-09-08 | Fujitsu Ltd | Calling state separating system |
| JPH0371768A (en) * | 1989-08-11 | 1991-03-27 | Sanyo Electric Co Ltd | Call waiting system |
| JPH0787486B2 (en) * | 1989-08-11 | 1995-09-20 | 三洋電機株式会社 | Call waiting method for automatic exchange |
| KR100496877B1 (en) * | 2002-10-15 | 2005-06-22 | 삼원금속 주식회사 | Apparatus for treating washing water for plating capable of recycling and method thereof |
| KR100496878B1 (en) * | 2002-10-15 | 2005-06-28 | 삼원금속 주식회사 | Apparatus for treating washing water in pretreating of plating process and method thereof |
| KR100509250B1 (en) * | 2002-10-15 | 2005-08-23 | 삼원금속 주식회사 | Apparatus for recovering sexivalent chrome in chromium plating washing water and method thereof |
| CN101781050A (en) * | 2010-03-09 | 2010-07-21 | 江汉大学 | Method for treating low-concentration chromate waste water |
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