JPS5732790A - Treatment of waste water - Google Patents

Treatment of waste water

Info

Publication number
JPS5732790A
JPS5732790A JP10766980A JP10766980A JPS5732790A JP S5732790 A JPS5732790 A JP S5732790A JP 10766980 A JP10766980 A JP 10766980A JP 10766980 A JP10766980 A JP 10766980A JP S5732790 A JPS5732790 A JP S5732790A
Authority
JP
Japan
Prior art keywords
treatment
agitators
state
denitrification
tank
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
Application number
JP10766980A
Other languages
Japanese (ja)
Inventor
Kazuo Sekizawa
Shoko Motomura
Masaaki Suito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Envirotech Inc
Original Assignee
Sumitomo Heavy Industries Envirotech Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Envirotech Inc filed Critical Sumitomo Heavy Industries Envirotech Inc
Priority to JP10766980A priority Critical patent/JPS5732790A/en
Publication of JPS5732790A publication Critical patent/JPS5732790A/en
Pending legal-status Critical Current

Links

Landscapes

  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE: To suppress the propagation of sphaerotilus which is aerobic bacterium and prevent mold bulking by providig agitators which give only the prescribed water flow near both ends of a partition wall, and combining the operation of the agitators and the intermittent operation of aerators.
CONSTITUTION: Aeration treatment of waste water is carried out by using a loop type treating tank 1, and combining the operation of agitators 4 and the operation by the start-stop of aerators 3. The entire part of the mixed liquid in the tank is repeated to an aerobic state and an anearobic state by leaving intervals for a suitable time. In this way, ammonia is mainly nitrified in the aerobic state and in succession to this, denitrification bacterium groups are activated in the anaerobic state that takes place in the same tank, whereby nitric acid is decomposed. Thereby, denitrification operation treatment is accomplished at low maintenance costs in a large scale sewage treatment system, and the treatment of ≥70% denitrification rate is stably accomplished by the simple operations.
COPYRIGHT: (C)1982,JPO&Japio
JP10766980A 1980-08-07 1980-08-07 Treatment of waste water Pending JPS5732790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10766980A JPS5732790A (en) 1980-08-07 1980-08-07 Treatment of waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10766980A JPS5732790A (en) 1980-08-07 1980-08-07 Treatment of waste water

Publications (1)

Publication Number Publication Date
JPS5732790A true JPS5732790A (en) 1982-02-22

Family

ID=14464993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10766980A Pending JPS5732790A (en) 1980-08-07 1980-08-07 Treatment of waste water

Country Status (1)

Country Link
JP (1) JPS5732790A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990699A (en) * 1982-11-16 1984-05-25 Kawasaki Heavy Ind Ltd Treatment of waste water
JPS59132998A (en) * 1983-01-19 1984-07-31 Kubota Ltd Water disposal
JPS607997A (en) * 1983-06-24 1985-01-16 Hanshin Doryoku Kikai Kk Process and apparatus for purifying filthy turbid water in anaerobic and aerobic treating tank using underwater stirring
JPS6049999U (en) * 1983-09-14 1985-04-08 株式会社　西原環境衛生研究所 Circulating waterway type activated sludge treatment equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990699A (en) * 1982-11-16 1984-05-25 Kawasaki Heavy Ind Ltd Treatment of waste water
JPH0117438B2 (en) * 1982-11-16 1989-03-30 Kawasaki Heavy Ind Ltd
JPS59132998A (en) * 1983-01-19 1984-07-31 Kubota Ltd Water disposal
JPS6316200B2 (en) * 1983-01-19 1988-04-07 Kubota Ltd
JPS607997A (en) * 1983-06-24 1985-01-16 Hanshin Doryoku Kikai Kk Process and apparatus for purifying filthy turbid water in anaerobic and aerobic treating tank using underwater stirring
JPS6049999U (en) * 1983-09-14 1985-04-08 株式会社　西原環境衛生研究所 Circulating waterway type activated sludge treatment equipment
JPH04960Y2 (en) * 1983-09-14 1992-01-13

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