JPS55152594A - Waste water treatment using method of sectional recovery of active sludge - Google Patents
Waste water treatment using method of sectional recovery of active sludgeInfo
- Publication number
- JPS55152594A JPS55152594A JP5975779A JP5975779A JPS55152594A JP S55152594 A JPS55152594 A JP S55152594A JP 5975779 A JP5975779 A JP 5975779A JP 5975779 A JP5975779 A JP 5975779A JP S55152594 A JPS55152594 A JP S55152594A
- Authority
- JP
- Japan
- Prior art keywords
- aeration
- amount
- tank
- active sludge
- oxygen
- 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.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 238000011084 recovery Methods 0.000 title abstract 2
- 238000004065 wastewater treatment Methods 0.000 title 1
- 238000005273 aeration Methods 0.000 abstract 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 5
- 229910052760 oxygen Inorganic materials 0.000 abstract 5
- 239000001301 oxygen Substances 0.000 abstract 5
- 238000010521 absorption reaction Methods 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- 238000010998 test method Methods 0.000 abstract 1
- 239000002351 wastewater Substances 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 obtain good-quality treated water under a small aeration ratio condition by a method wherein the quantity of aeration to a closed type aeration tank and the tank internal pressure are controlled to correspond to the change in speed of oxygen take-in of active sludge which changes with time.
CONSTITUTION: During the treatment period of waste water, the amount of aeration to aeration tank and the taank internal pressure are controlled. The control is made by pressure control and exhaustion valves attached to the tank, so that the change is made, in increase and decrease, to follow each hystogram. This effects in reducing an aeration factor and increasing an oxygen absorption efficiency. The rate of oxygen absorption from liquid to be treated at a specified BOD load is measued, for example, according to the sewage test method. The measurement value change with time is used to control the amount to aeration to the aeration tank and to find the time to make its switching. A small scale recovery treatment is made by using a small amount of liquid being treated, and the result is used to convert the oxygen absorption speed of active sludge to the speed of oxygen movement in a clean water at 20°C. The result is further converted to the amount of draft to obtain an approximate aeration amount.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54059757A JPS5950398B2 (en) | 1979-05-17 | 1979-05-17 | Wastewater treatment method using batch activated sludge method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54059757A JPS5950398B2 (en) | 1979-05-17 | 1979-05-17 | Wastewater treatment method using batch activated sludge method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55152594A true JPS55152594A (en) | 1980-11-27 |
| JPS5950398B2 JPS5950398B2 (en) | 1984-12-07 |
Family
ID=13122444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54059757A Expired JPS5950398B2 (en) | 1979-05-17 | 1979-05-17 | Wastewater treatment method using batch activated sludge method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5950398B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5406023A (en) * | 1992-02-25 | 1995-04-11 | Yamaha Corporation | Electronic musical instrument using simplified registration selection |
| CN100348303C (en) * | 2006-04-19 | 2007-11-14 | 天津天大天环科技有限公司 | Energy-saving integrated type membrane bioreactor |
-
1979
- 1979-05-17 JP JP54059757A patent/JPS5950398B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5406023A (en) * | 1992-02-25 | 1995-04-11 | Yamaha Corporation | Electronic musical instrument using simplified registration selection |
| CN100348303C (en) * | 2006-04-19 | 2007-11-14 | 天津天大天环科技有限公司 | Energy-saving integrated type membrane bioreactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5950398B2 (en) | 1984-12-07 |
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