JPS5561994A - Method of reducing sulfureous nitrogen compounds in waste water - Google Patents
Method of reducing sulfureous nitrogen compounds in waste waterInfo
- Publication number
- JPS5561994A JPS5561994A JP13553978A JP13553978A JPS5561994A JP S5561994 A JPS5561994 A JP S5561994A JP 13553978 A JP13553978 A JP 13553978A JP 13553978 A JP13553978 A JP 13553978A JP S5561994 A JPS5561994 A JP S5561994A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- sulfureous
- nitrogen compounds
- nitrous acid
- reducing
- 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
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Removal Of Specific Substances (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
PURPOSE: To reduce greatly sulfureous nitrogen compounds in waste water by taking advantage of a biological nitrification reaction to form nitrous acid from ammonia present in waste water.
CONSTITUTION: The waste water discharged in the wet desulfurization treatment following dry denitrification treatment of flue gas is heat-treated at 60°C or more in an acidified pH range of 4 and less than 4 to hydrolyze sulfureous nitrogen compounds present in waste water. Then, the waste water is subjected to the usual biological nitrification process to form nitrous acid from ammonia present in waste water, and then the nitrous acid formed is reacted with the products of hydrolysis in an acidified pH range of 4 and less than 4. Thus, sulfureous nitrogen compounds present in the waste water can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13553978A JPS5561994A (en) | 1978-11-02 | 1978-11-02 | Method of reducing sulfureous nitrogen compounds in waste water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13553978A JPS5561994A (en) | 1978-11-02 | 1978-11-02 | Method of reducing sulfureous nitrogen compounds in waste water |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5561994A true JPS5561994A (en) | 1980-05-10 |
JPS5756398B2 JPS5756398B2 (en) | 1982-11-29 |
Family
ID=15154138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13553978A Granted JPS5561994A (en) | 1978-11-02 | 1978-11-02 | Method of reducing sulfureous nitrogen compounds in waste water |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5561994A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59123599A (en) * | 1982-12-28 | 1984-07-17 | Ebara Infilco Co Ltd | Treatment of waste water containing nitrogenous sulfer compound and ammonia |
-
1978
- 1978-11-02 JP JP13553978A patent/JPS5561994A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59123599A (en) * | 1982-12-28 | 1984-07-17 | Ebara Infilco Co Ltd | Treatment of waste water containing nitrogenous sulfer compound and ammonia |
JPH0116560B2 (en) * | 1982-12-28 | 1989-03-24 | Ebara Infilco |
Also Published As
Publication number | Publication date |
---|---|
JPS5756398B2 (en) | 1982-11-29 |
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