JPS565190A - Microorganism concentration controller for activated sludge in aeration tank - Google Patents

Microorganism concentration controller for activated sludge in aeration tank

Info

Publication number
JPS565190A
JPS565190A JP8052679A JP8052679A JPS565190A JP S565190 A JPS565190 A JP S565190A JP 8052679 A JP8052679 A JP 8052679A JP 8052679 A JP8052679 A JP 8052679A JP S565190 A JPS565190 A JP S565190A
Authority
JP
Japan
Prior art keywords
mlss
amount
regulator
circuit
sludge
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
Application number
JP8052679A
Other languages
Japanese (ja)
Other versions
JPS574394B2 (en
Inventor
Tatsuo Oki
Yoji Shimizu
Koichi Okamoto
Junji Hirotsuji
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8052679A priority Critical patent/JPS565190A/en
Publication of JPS565190A publication Critical patent/JPS565190A/en
Publication of JPS574394B2 publication Critical patent/JPS574394B2/ja
Granted 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

Landscapes

  • Activated Sludge Processes (AREA)

Abstract

PURPOSE: To control the amounts of incoming sewage and returned sludge on the basis of the set value or MLSS (activated sludge microorganism concentration), the amount of incoming sewage, and the total amount of sludge for keeping MLSS of a specific circuit constant in an aeration tank operated by a step aeration method.
CONSTITUTION: A signal of MLSS of the circuit A is put in the MLSS regulator 8, and the output of the regulator 8 is added the incoming sewage amount Qia* of the circuit A for keeping the set MLSS values Ca* and Cb* at inlets of both the circuits A and B in order to operate the inflow door 2, thereby the amount of sewage to the circuit A is controlled. Also, MLSS value Cb at the inlet of the circuit B is put in the regulator 7, and the output of the regulator 7 is added to the returned sludge amount Qr* for keeping the set MLSS values Ca* and Cb* at the inlets of both the circuits A and B at an average valve in order to operate the valve 3, thereby the amount of returned sludge is controlled. Accordingly, MLSS can be kept at set values with good responsiveness for a long length of time even when the gain of the regulator for both the circuits A and B is made small to some extent for avoiding interferencial phenomenon.
COPYRIGHT: (C)1981,JPO&Japio
JP8052679A 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank Granted JPS565190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8052679A JPS565190A (en) 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8052679A JPS565190A (en) 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank

Publications (2)

Publication Number Publication Date
JPS565190A true JPS565190A (en) 1981-01-20
JPS574394B2 JPS574394B2 (en) 1982-01-26

Family

ID=13720758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8052679A Granted JPS565190A (en) 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank

Country Status (1)

Country Link
JP (1) JPS565190A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843936A (en) * 1986-11-26 1989-07-04 Yamaha Corporation Automatic music player system
JPH04338292A (en) * 1991-05-14 1992-11-25 Asahi Breweries Ltd Automatic controller for inflow rate of raw water to activated sludge treating equipment
US5506369A (en) * 1993-10-08 1996-04-09 Yamaha Corporation Electromagnetic actuator used for keyboard musical instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843936A (en) * 1986-11-26 1989-07-04 Yamaha Corporation Automatic music player system
JPH04338292A (en) * 1991-05-14 1992-11-25 Asahi Breweries Ltd Automatic controller for inflow rate of raw water to activated sludge treating equipment
US5506369A (en) * 1993-10-08 1996-04-09 Yamaha Corporation Electromagnetic actuator used for keyboard musical instrument

Also Published As

Publication number Publication date
JPS574394B2 (en) 1982-01-26

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