JPS56115687A - Optimum operating method for sewage treatment system by activated sludge process - Google Patents

Optimum operating method for sewage treatment system by activated sludge process

Info

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
Application number
JP1752880A
Other languages
Japanese (ja)
Inventor
Takashi Nakayama
Hidemi Kodate
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1752880A priority Critical patent/JPS56115687A/en
Publication of JPS56115687A publication Critical patent/JPS56115687A/en
Pending legal-status Critical Current

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

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
JP1752880A 1980-02-15 1980-02-15 Optimum operating method for sewage treatment system by activated sludge process Pending JPS56115687A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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