JPS57144089A - Automatic control method for batch-wise activated sludge method - Google Patents
Automatic control method for batch-wise activated sludge methodInfo
- Publication number
- JPS57144089A JPS57144089A JP56027657A JP2765781A JPS57144089A JP S57144089 A JPS57144089 A JP S57144089A JP 56027657 A JP56027657 A JP 56027657A JP 2765781 A JP2765781 A JP 2765781A JP S57144089 A JPS57144089 A JP S57144089A
- Authority
- JP
- Japan
- Prior art keywords
- value
- tank
- aeration
- sensor
- liquid
- 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
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 treated water of always stable water quality with good efficiency by calculating the consumption rate of the dissolved oxygen of the liquid in an aeration tank by using an automatic controller, and stopping the aeration when the calculated value lowers below the limit value set beforehand in the automatic controller.
CONSTITUTION: Raw water is fed from a storage tank to an aeration tank 3 with a pump 2, and air is blown thereto through a nozzle 5 with a fan 4, whereby said water is aerated. Part of the liquid in the tank 3 is fed via a sensor 8 by a pump 7 to a dissolved oxygen densitometer 9, by which the dissolved oxygen concn. after oxygen is consumed by the activated sludge during passage through the inside of a piping 6 is measured. The measured value is introduced into an automatic controller 10 and the measured value by a sensor 11 is also introduced to the controller 10. Here, the rate of oxygen consumption is calculated from the difference between the measured values of the sensors 8, 11, and the time when the liquid in the tank passes through the piping and arrives at the sensor 8. The result thereof and the set value are compared and at the point of the time when the calculated value attains the value below the set value, the aeration is stopped, and the treated water is discharged from a discharge pipe 12.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56027657A JPS57144089A (en) | 1981-02-28 | 1981-02-28 | Automatic control method for batch-wise activated sludge method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56027657A JPS57144089A (en) | 1981-02-28 | 1981-02-28 | Automatic control method for batch-wise activated sludge method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57144089A true JPS57144089A (en) | 1982-09-06 |
Family
ID=12226993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56027657A Pending JPS57144089A (en) | 1981-02-28 | 1981-02-28 | Automatic control method for batch-wise activated sludge method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57144089A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818408A (en) * | 1986-09-09 | 1989-04-04 | Nishihara Om-Tech Co., Ltd. | Intermittent aeration type biological treatment process and system therefor |
| JPH01242196A (en) * | 1988-03-24 | 1989-09-27 | Fuji Kasui Kogyo Kk | Control of operation of batch apparatus for treating activated sludge |
| KR20010091457A (en) * | 2000-03-15 | 2001-10-23 | 박기호 | A sewage treating method for improving the nitrogen removal and a sewage treating device for the same |
| KR100424999B1 (en) * | 2002-03-19 | 2004-03-27 | 주식회사 한스환경엔지니어링 | Controlling system and method of sequencing batch reactor |
| JP2008168187A (en) * | 2007-01-10 | 2008-07-24 | Matsushita Electric Ind Co Ltd | Control method for aeration tank |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4923947A (en) * | 1972-07-01 | 1974-03-02 | ||
| JPS52131654A (en) * | 1976-04-26 | 1977-11-04 | Nippon Kentetsu Co Ltd | Waste water treatment method |
| JPS5342453A (en) * | 1976-09-28 | 1978-04-17 | Agency Of Ind Science & Technol | Intermittent type active sludge process and device |
-
1981
- 1981-02-28 JP JP56027657A patent/JPS57144089A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4923947A (en) * | 1972-07-01 | 1974-03-02 | ||
| JPS52131654A (en) * | 1976-04-26 | 1977-11-04 | Nippon Kentetsu Co Ltd | Waste water treatment method |
| JPS5342453A (en) * | 1976-09-28 | 1978-04-17 | Agency Of Ind Science & Technol | Intermittent type active sludge process and device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818408A (en) * | 1986-09-09 | 1989-04-04 | Nishihara Om-Tech Co., Ltd. | Intermittent aeration type biological treatment process and system therefor |
| JPH01242196A (en) * | 1988-03-24 | 1989-09-27 | Fuji Kasui Kogyo Kk | Control of operation of batch apparatus for treating activated sludge |
| KR20010091457A (en) * | 2000-03-15 | 2001-10-23 | 박기호 | A sewage treating method for improving the nitrogen removal and a sewage treating device for the same |
| KR100424999B1 (en) * | 2002-03-19 | 2004-03-27 | 주식회사 한스환경엔지니어링 | Controlling system and method of sequencing batch reactor |
| JP2008168187A (en) * | 2007-01-10 | 2008-07-24 | Matsushita Electric Ind Co Ltd | Control method for aeration tank |
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