JPS56115687A - Optimum operating method for sewage treatment system by activated sludge process - Google Patents
Optimum operating method for sewage treatment system by activated sludge processInfo
- Publication number
- JPS56115687A JPS56115687A JP1752880A JP1752880A JPS56115687A JP S56115687 A JPS56115687 A JP S56115687A JP 1752880 A JP1752880 A JP 1752880A JP 1752880 A JP1752880 A JP 1752880A JP S56115687 A JPS56115687 A JP S56115687A
- Authority
- JP
- Japan
- Prior art keywords
- concn
- tank
- return
- flow rate
- 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
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 keep the quality of treated water always below predetermined index value by obtaining the optimum return and excess sludge flow rates in a unit time by a specific method in order to maintain the mixed suspended solids concn. of an aerating tank at the target value.
CONSTITUTION: A titled system is formed basically of a sewage inflow pipe 1, an aerating tank 2, a settling basin 3, a supernatant release pipe 4, pumps 5, 7, and regulating valves 8, 9. In order minimize the fluctuating width of the mixed suspended solids (MLSS) in the tank 2, the forecast inflow sewage flow rate per unit time is set from the inflow sewage characteristics of the tank 2. The tank 2 model calculating the MLSS concn. on the tank 2 outlet side is set from this flow rate as well as substrate concn., return sludge flow rate and concn., and the basin 3 model calculating the return sludge concn. is set from said concn., sewage flow rate and the basin 3 return sludge flow rate. From these and the target value for making MLSS constant, the return and excess sludge flow rates required for obtaining the target value is obtained, and these are adopted as the optimum return and excess sludge flow rates in a unit time. The argorithm thereof is as shown in the figure.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1752880A JPS56115687A (en) | 1980-02-15 | 1980-02-15 | Optimum operating method for sewage treatment system by activated sludge process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1752880A JPS56115687A (en) | 1980-02-15 | 1980-02-15 | Optimum operating method for sewage treatment system by activated sludge process |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56115687A true JPS56115687A (en) | 1981-09-10 |
Family
ID=11946416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1752880A Pending JPS56115687A (en) | 1980-02-15 | 1980-02-15 | Optimum operating method for sewage treatment system by activated sludge process |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56115687A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58156395A (en) * | 1982-03-15 | 1983-09-17 | Toshiba Corp | Means for controlling amount of sludge in sewage disposal plant |
JPS58219995A (en) * | 1982-06-14 | 1983-12-21 | Toshiba Corp | Method and apparatus for controlling amount of activated sludge |
JPS60106590A (en) * | 1983-11-15 | 1985-06-12 | Yaskawa Electric Mfg Co Ltd | Controller of sewage treatment |
JP2017209642A (en) * | 2016-05-26 | 2017-11-30 | メタウォーター株式会社 | Method of adjusting return sludge amount and excess sludge amount from final sedimentation place |
-
1980
- 1980-02-15 JP JP1752880A patent/JPS56115687A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58156395A (en) * | 1982-03-15 | 1983-09-17 | Toshiba Corp | Means for controlling amount of sludge in sewage disposal plant |
JPS58219995A (en) * | 1982-06-14 | 1983-12-21 | Toshiba Corp | Method and apparatus for controlling amount of activated sludge |
JPS60106590A (en) * | 1983-11-15 | 1985-06-12 | Yaskawa Electric Mfg Co Ltd | Controller of sewage treatment |
JP2017209642A (en) * | 2016-05-26 | 2017-11-30 | メタウォーター株式会社 | Method of adjusting return sludge amount and excess sludge amount from final sedimentation place |
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