JPS55102498A - Treatment of waste water - Google Patents
Treatment of waste waterInfo
- Publication number
- JPS55102498A JPS55102498A JP994779A JP994779A JPS55102498A JP S55102498 A JPS55102498 A JP S55102498A JP 994779 A JP994779 A JP 994779A JP 994779 A JP994779 A JP 994779A JP S55102498 A JPS55102498 A JP S55102498A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- nitrification
- tank
- nitrogen
- oxidative decomposition
- 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
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
PURPOSE: To remove effectively NH3 nitrogen from waste water by regulating pH value in the nitrification process by using an aqueous alkali solution treated with a CO2-containing gas produced in oxidative decomposition or/and denitrification process in the oxidative decomposition, nitrification, and denitrification processes for organics present in waste water.
CONSTITUTION: Waste water containing NH3 nitrogen together with organics is charged into the pretreatment tank 1 to remove coarse impurities and then sent to the sedimentation tank 2 to remove organic flocs. Then, the waste water thus pretreated is introduced into the oxidative decomposition tank 3 to decompose organics present by oxidizing bacteria under an aerobic condition in order to lower BOD value, and then sent to the nitrification tank 4 to convert NH3 nitrogen into nitric acid nitrogen by nitrification using nitrifying bacteria under aerating condition. Then, the nitrified waste water is sent to the denitrification tank 6 to reduce the nitric acid nitrogen to N2 gas by denitrifying bacteria under an anaerobic condition. On the other hand, a CO2-containing gas produced in the oxidative decomposition or/and denitrification process is brought into contact with an aqueous alkali solution and then the liquid thus treated is used for regulating pH in the nitrification process, thus permitting the growth of nitrifying bacteria to increase and also its activity to maintain.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP994779A JPS55102498A (en) | 1979-01-30 | 1979-01-30 | Treatment of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP994779A JPS55102498A (en) | 1979-01-30 | 1979-01-30 | Treatment of waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55102498A true JPS55102498A (en) | 1980-08-05 |
Family
ID=11734172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP994779A Pending JPS55102498A (en) | 1979-01-30 | 1979-01-30 | Treatment of waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55102498A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58189099A (en) * | 1982-04-30 | 1983-11-04 | Kyowa Hakko Kogyo Co Ltd | Treatment of liquid waste |
| KR100315874B1 (en) * | 1999-07-30 | 2001-12-13 | 채문식 | Method and Apparatus of Biological Nitrogen Removal from the High Concentration Industrial Wastewater |
-
1979
- 1979-01-30 JP JP994779A patent/JPS55102498A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58189099A (en) * | 1982-04-30 | 1983-11-04 | Kyowa Hakko Kogyo Co Ltd | Treatment of liquid waste |
| KR100315874B1 (en) * | 1999-07-30 | 2001-12-13 | 채문식 | Method and Apparatus of Biological Nitrogen Removal from the High Concentration Industrial Wastewater |
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