JPS57156090A - Activated sludge treatment - Google Patents
Activated sludge treatmentInfo
- Publication number
- JPS57156090A JPS57156090A JP56042157A JP4215781A JPS57156090A JP S57156090 A JPS57156090 A JP S57156090A JP 56042157 A JP56042157 A JP 56042157A JP 4215781 A JP4215781 A JP 4215781A JP S57156090 A JPS57156090 A JP S57156090A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- mixed
- tank
- return
- contact
- 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
- 239000010802 sludge Substances 0.000 title abstract 13
- 239000007788 liquid Substances 0.000 abstract 5
- 238000005273 aeration Methods 0.000 abstract 4
- 230000003311 flocculating effect Effects 0.000 abstract 1
- 239000010842 industrial wastewater Substances 0.000 abstract 1
- 239000006228 supernatant Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Activated Sludge Processes (AREA)
Abstract
PURPOSE: To improve the settling characteristic of sludge by mixing contact liquid such as industrial waste water or the like with the primary contact mixed sludge or the like contacted and mixed with part of the sludge treated and mixed in an aeration tank and/or part of return sludge and flocculating these.
CONSTITUTION: Raw water 6 is supplied to an aeration 1 where it is sujected to a biological treatment. The sludge 8 treated and mixed in the aeration tank is transferred to a solid-liquid separating tank 2. Part 4 of the settled return sludge and contact liquid 7 are supplied in a contact tank 12, where these are contacted and mixed. In some cases, the contact liquid may be mixed with part of the return sludge before it is put into the tank 12. The primary contact mixed sludge 10 mixed with the sludge 8 flowing out from the aeration tank, and the mixed secondary contact mixed sludge 11 is supplied to a solid-liquid separating tank 2. Thence, supernatant 9 is released, and the sludge settled in the tank 2 is returned with a return pump 3 to return the greater part of the return sludge 4 into the tank 1 and part thereof into the tank 12.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56042157A JPS57156090A (en) | 1981-03-22 | 1981-03-22 | Activated sludge treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56042157A JPS57156090A (en) | 1981-03-22 | 1981-03-22 | Activated sludge treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57156090A true JPS57156090A (en) | 1982-09-27 |
Family
ID=12628106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56042157A Pending JPS57156090A (en) | 1981-03-22 | 1981-03-22 | Activated sludge treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57156090A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1342698A1 (en) * | 2002-03-05 | 2003-09-10 | Norbert Univ. Prof. Dipl.-Ing. Dr. Matsché | Proccess and installation for the biological treatment of industrial wastewaters |
| KR100704698B1 (en) * | 2003-12-04 | 2007-04-20 | 세이코 엡슨 가부시키가이샤 | Gear pump and liquid jetting device |
| JP2008075586A (en) * | 2006-09-22 | 2008-04-03 | Nabtesco Corp | Vane type vacuum pump |
-
1981
- 1981-03-22 JP JP56042157A patent/JPS57156090A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1342698A1 (en) * | 2002-03-05 | 2003-09-10 | Norbert Univ. Prof. Dipl.-Ing. Dr. Matsché | Proccess and installation for the biological treatment of industrial wastewaters |
| KR100704698B1 (en) * | 2003-12-04 | 2007-04-20 | 세이코 엡슨 가부시키가이샤 | Gear pump and liquid jetting device |
| JP2008075586A (en) * | 2006-09-22 | 2008-04-03 | Nabtesco Corp | Vane type vacuum pump |
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