JPS54135448A - Biological nitrification and denitrating process of sewage - Google Patents
Biological nitrification and denitrating process of sewageInfo
- Publication number
- JPS54135448A JPS54135448A JP4280978A JP4280978A JPS54135448A JP S54135448 A JPS54135448 A JP S54135448A JP 4280978 A JP4280978 A JP 4280978A JP 4280978 A JP4280978 A JP 4280978A JP S54135448 A JPS54135448 A JP S54135448A
- Authority
- JP
- Japan
- Prior art keywords
- state nitrogen
- treatment
- ammonia
- denitrating
- nitrification
- 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 perform oxidation treatment of BOD, nitrification of ammonia-state nitrogen and denitrating treatment in the same cistern simultaneously by controlling the concentration of dissolving oxygen in the range from 0.05 ppm to 2.0 ppm in the air-exposing cistern.
CONSTITUTION: BOD oxidation, nitrification of ammonia-state nitrogen and denitrating treatment of nitrous-acid-state nitrogen or/and nitric-acid-state nitrogen are simultaneously carried out in the same cistern by treating sewage containing 2000 mg/l or less of ammonia-state nitrogen with exposing air, the concentration of dissolving oxygen of which is controlled in the range from 0.05 to 2.0 mg/l or from 0.1 to 0.2 mg/l preferably, for example, by activated mud treatment.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4280978A JPS54135448A (en) | 1978-04-11 | 1978-04-11 | Biological nitrification and denitrating process of sewage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4280978A JPS54135448A (en) | 1978-04-11 | 1978-04-11 | Biological nitrification and denitrating process of sewage |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54135448A true JPS54135448A (en) | 1979-10-20 |
Family
ID=12646277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4280978A Pending JPS54135448A (en) | 1978-04-11 | 1978-04-11 | Biological nitrification and denitrating process of sewage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54135448A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5990696A (en) * | 1982-11-16 | 1984-05-25 | Mitsubishi Heavy Ind Ltd | Treatment of waste water |
US4500427A (en) * | 1981-11-09 | 1985-02-19 | Shinryo Air Conditioning Co., Ltd. | Activated-sludge process for wastewater treatment |
US4746435A (en) * | 1980-10-13 | 1988-05-24 | Mitsubishi Rayon Co., Ltd. | Biochemical process for purifying contaminated water |
US5849180A (en) * | 1995-08-10 | 1998-12-15 | Hitachi Plant Engineering & Construction Co., Ltd | Method of biologically removing nitrogen and system therefor |
JP2008501500A (en) * | 2004-06-02 | 2008-01-24 | オテヴェ・ソシエテ・アノニム | Water treatment method using bioreactor and corresponding apparatus in which the speed of the air continuously injected into the reactor is adjusted |
JP2017077509A (en) * | 2015-10-19 | 2017-04-27 | 株式会社ウェルシィ | Water treatment method and apparatus |
-
1978
- 1978-04-11 JP JP4280978A patent/JPS54135448A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4746435A (en) * | 1980-10-13 | 1988-05-24 | Mitsubishi Rayon Co., Ltd. | Biochemical process for purifying contaminated water |
US4500427A (en) * | 1981-11-09 | 1985-02-19 | Shinryo Air Conditioning Co., Ltd. | Activated-sludge process for wastewater treatment |
JPS5990696A (en) * | 1982-11-16 | 1984-05-25 | Mitsubishi Heavy Ind Ltd | Treatment of waste water |
US5849180A (en) * | 1995-08-10 | 1998-12-15 | Hitachi Plant Engineering & Construction Co., Ltd | Method of biologically removing nitrogen and system therefor |
JP2008501500A (en) * | 2004-06-02 | 2008-01-24 | オテヴェ・ソシエテ・アノニム | Water treatment method using bioreactor and corresponding apparatus in which the speed of the air continuously injected into the reactor is adjusted |
JP2017077509A (en) * | 2015-10-19 | 2017-04-27 | 株式会社ウェルシィ | Water treatment method and apparatus |
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