JPS56158192A - Treatment of waste water - Google Patents
Treatment of waste waterInfo
- Publication number
- JPS56158192A JPS56158192A JP6050580A JP6050580A JPS56158192A JP S56158192 A JPS56158192 A JP S56158192A JP 6050580 A JP6050580 A JP 6050580A JP 6050580 A JP6050580 A JP 6050580A JP S56158192 A JPS56158192 A JP S56158192A
- Authority
- JP
- Japan
- Prior art keywords
- thiourea
- waste water
- oxidation
- ammoniac
- nitrogen
- 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 selectively oxidation-decompose only the thiourea by adding a chlorine type oxidizer to ammoniac -nitrogen- contg. waste water in which thiourea coexists to oxidation-decompose the same then subjecting the water to biological nitrification and denitrification treatment.
CONSTITUTION: A chlorine type oxidizer is added to ammoniac-nitrogen-contg. waste water in which thiourea coexists to oxidation-decompose thiourea, after which the waste water is subjected to biological nitrification and denitrification treatment. For example, the pH of the waste water contg. 200mg/l ammoniac nitrogen 0.5mg/l thiourea is controlled to 7, and sodium hypochlorite is added thereto and the water is stirred for one hour with a magnetic stirrer. Thence, this treated water is subjected to biological nitrification treatment. Thereby, the oxidation decomposition of ammoniac nitrogen is minimized, and only the thiourea is selectively oxidation-decomposed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6050580A JPS56158192A (en) | 1980-05-09 | 1980-05-09 | Treatment of waste water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6050580A JPS56158192A (en) | 1980-05-09 | 1980-05-09 | Treatment of waste water |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56158192A true JPS56158192A (en) | 1981-12-05 |
Family
ID=13144230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6050580A Pending JPS56158192A (en) | 1980-05-09 | 1980-05-09 | Treatment of waste water |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56158192A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT408218B (en) * | 1999-11-22 | 2001-09-25 | Dsm Fine Chem Austria Gmbh | METHOD FOR REDUCING THE AMOUNT OF SULFURIZED NITRIFICATION INHIBITORS IN PROCESS WASTE |
-
1980
- 1980-05-09 JP JP6050580A patent/JPS56158192A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT408218B (en) * | 1999-11-22 | 2001-09-25 | Dsm Fine Chem Austria Gmbh | METHOD FOR REDUCING THE AMOUNT OF SULFURIZED NITRIFICATION INHIBITORS IN PROCESS WASTE |
US6387280B1 (en) | 1999-11-22 | 2002-05-14 | Dsm Fine Chemicals Austria Nfg Gmbh & Cokg | Process for reducing the amount of nitrification-inhibiting sulfur compounds |
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