JPS55114390A - Treatment of organic acid washing waste water - Google Patents
Treatment of organic acid washing waste waterInfo
- Publication number
- JPS55114390A JPS55114390A JP1970979A JP1970979A JPS55114390A JP S55114390 A JPS55114390 A JP S55114390A JP 1970979 A JP1970979 A JP 1970979A JP 1970979 A JP1970979 A JP 1970979A JP S55114390 A JPS55114390 A JP S55114390A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- organic acid
- treatment
- chelating
- 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.)
- Pending
Links
Abstract
PURPOSE: To reduce COD value to 10ppm or less by adding sulfamic acid and iron ion to the washing-rust proofing concurrent treatment waste water of a chemical plant and then by subjecting the waste water to an oxidation process using hydrogen peroxide and an oxidation process using a persulfate.
CONSTITUTION: To a washing-rust proofing concurrent treatment waste water from a chemical plant, containing a chelating organic acid or its salt, a nitrogen-containing base, an organic amine as inhibitor, and a nitrite as rust inhibitor, equimolar amounts of a nitrite, e.g., sodium nitrite, etc., and sulfamic acid are added in order to remove nitrous acid and at the same time to lower its pH. Then, ferrous sulfate is added to the waste water so treated in such a proportion that iron ion having a chelating activity similar to or more than that of a chelating organic acid or its salt, e.g., ammonium citrate, etc., and then the waste water is subjected to an oxidation treatment using hydrogen peroxide to precipitate undercomposed chelating organic acid and its salts, iron ion, and copper ion, and further the supernatant is subjected to an oxidation treatment using a super sulfate.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1970979A JPS55114390A (en) | 1979-02-23 | 1979-02-23 | Treatment of organic acid washing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1970979A JPS55114390A (en) | 1979-02-23 | 1979-02-23 | Treatment of organic acid washing waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55114390A true JPS55114390A (en) | 1980-09-03 |
Family
ID=12006808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1970979A Pending JPS55114390A (en) | 1979-02-23 | 1979-02-23 | Treatment of organic acid washing waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55114390A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006305462A (en) * | 2005-04-28 | 2006-11-09 | Kurita Water Ind Ltd | Method for treating nitrite based anticorrosive-containing waste water |
| CN103752601A (en) * | 2013-12-31 | 2014-04-30 | 北京高能时代环境技术股份有限公司 | Method for remedying organic compound pollution in soil and/or water |
-
1979
- 1979-02-23 JP JP1970979A patent/JPS55114390A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006305462A (en) * | 2005-04-28 | 2006-11-09 | Kurita Water Ind Ltd | Method for treating nitrite based anticorrosive-containing waste water |
| CN103752601A (en) * | 2013-12-31 | 2014-04-30 | 北京高能时代环境技术股份有限公司 | Method for remedying organic compound pollution in soil and/or water |
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