JPS56147698A - Biological nitrifying and denitrifying method for night soil type sewage - Google Patents
Biological nitrifying and denitrifying method for night soil type sewageInfo
- Publication number
- JPS56147698A JPS56147698A JP5013280A JP5013280A JPS56147698A JP S56147698 A JPS56147698 A JP S56147698A JP 5013280 A JP5013280 A JP 5013280A JP 5013280 A JP5013280 A JP 5013280A JP S56147698 A JPS56147698 A JP S56147698A
- Authority
- JP
- Japan
- Prior art keywords
- denitrification
- nitrification
- soil type
- night soil
- type sewage
- 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
- 238000000034 method Methods 0.000 title abstract 16
- 239000010865 sewage Substances 0.000 title abstract 4
- 239000002689 soil Substances 0.000 title abstract 3
- 230000001546 nitrifying effect Effects 0.000 title abstract 2
- 239000010802 sludge Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
PURPOSE: To subject sewage to efficient nitrification and denitrification treatment by setting the water temperatures in nitrification process and denitrification process and the activated sludge concn. of the nitrification process at specific ranges and circulating the specific amount of NOX in the nitrification process to the denitrification process.
CONSTITUTION: In biologically treating night soil type sewage by providing a denitrification process 4 to the prestage of a nitrificatin process 6 and circulating the nitrified liquid to the denitrification process, the water temperatures of the process 6 and the process 4 are kept at 25W42°C, and the activated sludge concn. of the process 6 is maintained at 10W40g/l. Thence, 70W95% of the NOX formed in the process 6 is circulated to the process 4, and the treatment is performed while the number of days of the night soil type sewage stagnating in the process 6 and the process 4 are being kept at 0.5W5.0 days respectively. Thereby, the nitrifying and denitrifying device is efficiently reduced in size and both the installation area and construction cost thereof are considerably reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5013280A JPS56147698A (en) | 1980-04-16 | 1980-04-16 | Biological nitrifying and denitrifying method for night soil type sewage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5013280A JPS56147698A (en) | 1980-04-16 | 1980-04-16 | Biological nitrifying and denitrifying method for night soil type sewage |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56147698A true JPS56147698A (en) | 1981-11-16 |
Family
ID=12850607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5013280A Pending JPS56147698A (en) | 1980-04-16 | 1980-04-16 | Biological nitrifying and denitrifying method for night soil type sewage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56147698A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62140699A (en) * | 1985-12-17 | 1987-06-24 | Ebara Infilco Co Ltd | Biological treatment of organic waste water |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5027307A (en) * | 1973-07-16 | 1975-03-20 | ||
JPS5392551A (en) * | 1977-01-24 | 1978-08-14 | Ataka Kensetsu Kougiyou Kk | Method of treating waste water |
-
1980
- 1980-04-16 JP JP5013280A patent/JPS56147698A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5027307A (en) * | 1973-07-16 | 1975-03-20 | ||
JPS5392551A (en) * | 1977-01-24 | 1978-08-14 | Ataka Kensetsu Kougiyou Kk | Method of treating waste water |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62140699A (en) * | 1985-12-17 | 1987-06-24 | Ebara Infilco Co Ltd | Biological treatment of organic waste water |
JPH0134680B2 (en) * | 1985-12-17 | 1989-07-20 | Ebara Infuiruko Kk |
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