JPS5541850A - Decreasing sulfur and nitrogen compound and cod in waste water - Google Patents
Decreasing sulfur and nitrogen compound and cod in waste waterInfo
- Publication number
- JPS5541850A JPS5541850A JP11493578A JP11493578A JPS5541850A JP S5541850 A JPS5541850 A JP S5541850A JP 11493578 A JP11493578 A JP 11493578A JP 11493578 A JP11493578 A JP 11493578A JP S5541850 A JPS5541850 A JP S5541850A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- sulfur
- nitrogen compounds
- cod
- nitrogen compound
- 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
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
PURPOSE: To simultaneously reduce sulfur and nitrogen compounds as well as COD in waste water, by hydrolyzing waste water containing sulfur and nitrogen compounds by acidic heat treatment and adding nitrite ions.
CONSTITUTION: Waste water containing sulfur and nitrogen compounds discharged from wet type waste gas denitrification and desulfurization equipments or the like is heat treated above 60°C at an acidic zone below pH 4 to permit sulfur and nitrogen compounds in the waste water to be hydrolyzed. Next, nitrite ions such as potassium nitrite and nitrous acid gas is added to react with the hydrolyzed products, then sulfur and nitrogen compounds as well as COD in waste water are reduced at the same time.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53114935A JPS5811275B2 (en) | 1978-09-18 | 1978-09-18 | Method for reducing sulfur-containing nitrogen compounds and COD in wastewater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53114935A JPS5811275B2 (en) | 1978-09-18 | 1978-09-18 | Method for reducing sulfur-containing nitrogen compounds and COD in wastewater |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5541850A true JPS5541850A (en) | 1980-03-24 |
JPS5811275B2 JPS5811275B2 (en) | 1983-03-02 |
Family
ID=14650294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53114935A Expired JPS5811275B2 (en) | 1978-09-18 | 1978-09-18 | Method for reducing sulfur-containing nitrogen compounds and COD in wastewater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5811275B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59202128A (en) * | 1983-04-30 | 1984-11-15 | Matsushita Electric Works Ltd | Production of rain gutter made of metal |
WO2008038089A2 (en) * | 2006-09-25 | 2008-04-03 | Dong Energy Power A/S | Method for purification of wastewater containing sulphur and nitrogen containing compounds |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5165078A (en) * | 1974-12-04 | 1976-06-05 | Kureha Chemical Ind Co Ltd | CHITSUSOSANKABUTSUNO MUGAIKAHOHO |
JPS5176854A (en) * | 1974-12-26 | 1976-07-03 | Taoka Chemical Co Ltd | HAIEKINOYOSOSHOHIRYOTEIGENHOHO |
-
1978
- 1978-09-18 JP JP53114935A patent/JPS5811275B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5165078A (en) * | 1974-12-04 | 1976-06-05 | Kureha Chemical Ind Co Ltd | CHITSUSOSANKABUTSUNO MUGAIKAHOHO |
JPS5176854A (en) * | 1974-12-26 | 1976-07-03 | Taoka Chemical Co Ltd | HAIEKINOYOSOSHOHIRYOTEIGENHOHO |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59202128A (en) * | 1983-04-30 | 1984-11-15 | Matsushita Electric Works Ltd | Production of rain gutter made of metal |
WO2008038089A2 (en) * | 2006-09-25 | 2008-04-03 | Dong Energy Power A/S | Method for purification of wastewater containing sulphur and nitrogen containing compounds |
WO2008038089A3 (en) * | 2006-09-25 | 2008-06-12 | Dong Energy Generation | Method for purification of wastewater containing sulphur and nitrogen containing compounds |
Also Published As
Publication number | Publication date |
---|---|
JPS5811275B2 (en) | 1983-03-02 |
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