JPS57167800A - Treatment for sludge of night soil purification tank - Google Patents
Treatment for sludge of night soil purification tankInfo
- Publication number
- JPS57167800A JPS57167800A JP5264281A JP5264281A JPS57167800A JP S57167800 A JPS57167800 A JP S57167800A JP 5264281 A JP5264281 A JP 5264281A JP 5264281 A JP5264281 A JP 5264281A JP S57167800 A JPS57167800 A JP S57167800A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- germs
- half part
- sludge
- aeration conditions
- 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 simplify installation and treating process by effecting nitrification of nitrifying germs and denitrification of denitrifying germs simultaneously with oxidation of BOD oxidizing germs in a single digesting tank designed to be in the anaerobic aeration conditions in the first half part and in the aerobic aeration conditions in the second half part.
CONSTITUTION: Night soil sludge (a) is mixed and homogenized in a storage tank 3, and is fed to a digesting tank 11. In the first half part (about 40%) of the tank 11, air (d') to an extent insufficient for settling suspending matters whereby anaerobic aeration conditions are formed. In the second half part (about 60%) of the tank 11, a large amt. of air (d) is blown, whereby aerobic aeration conditions are formed. Hence, in the first half part, the oxidation of BOD by BOD germs is effected and in the second half part, the nitrification by nitrifying germs and the denitrification by denitrifying germs are effected. The sludge from the tank 11 enters the 1st settling tank 12, and the settled sludge produced therein is returned into the tank 11. The supernatant enters a reaction tank 13. Here, a flocculating agent A1 is added and the sludge is fed to a flocculating and settling tank 14, where it is separated to flocs g1 and supernatant a6.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5264281A JPS57167800A (en) | 1981-04-07 | 1981-04-07 | Treatment for sludge of night soil purification tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5264281A JPS57167800A (en) | 1981-04-07 | 1981-04-07 | Treatment for sludge of night soil purification tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57167800A true JPS57167800A (en) | 1982-10-15 |
Family
ID=12920485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5264281A Pending JPS57167800A (en) | 1981-04-07 | 1981-04-07 | Treatment for sludge of night soil purification tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57167800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011313A1 (en) * | 1992-11-06 | 1994-05-26 | THE MINISTER FOR PUBLIC WORKS for and on behalf ofTHE STATE OF NEW SOUTH WALES | Biological phosphorus removal from waste water |
-
1981
- 1981-04-07 JP JP5264281A patent/JPS57167800A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011313A1 (en) * | 1992-11-06 | 1994-05-26 | THE MINISTER FOR PUBLIC WORKS for and on behalf ofTHE STATE OF NEW SOUTH WALES | Biological phosphorus removal from waste water |
| US5543051A (en) * | 1992-11-06 | 1996-08-06 | The Minister For Public Works And Services For And On Behalf Of The State Of New South Wales | Biological phosphorus removal from waste water |
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