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JPS565187A - Microorganism concentration controller for activated sludge in aeration tank - Google Patents

Microorganism concentration controller for activated sludge in aeration tank

Info

Publication number
JPS565187A
JPS565187A JP8052379A JP8052379A JPS565187A JP S565187 A JPS565187 A JP S565187A JP 8052379 A JP8052379 A JP 8052379A JP 8052379 A JP8052379 A JP 8052379A JP S565187 A JPS565187 A JP S565187A
Authority
JP
Japan
Prior art keywords
mlss
sludge
amount
aeration tank
activated 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
JP8052379A
Other languages
Japanese (ja)
Other versions
JPS574391B2 (en
Inventor
Yoshizumi Ogishima
Takuji Nakazato
Takahei Kuwata
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 JP8052379A priority Critical patent/JPS565187A/en
Publication of JPS565187A publication Critical patent/JPS565187A/en
Publication of JPS574391B2 publication Critical patent/JPS574391B2/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 according to the set value of MLSS (microorganism concentration of activated sludge), the amount of incoming sewage, and total amount of sludge for keeping MLSS constant at specific two points inside an aeration tank operates by a step aeration method.
CONSTITUTION: The MLSS meters 4 and 5 are provided at two points inside the aeration tank 1, and as an operating amount for the inflow door 2 for the sewage (a) and the valve 3 for returned sludge, the sums of respective constant values and deviation values, derived from the set values of MLSS, the amount of incoming sewage, and the total amount of sludge, are given in order to keep MLSS constant at the two points. In order to regulate MLSS in the said circuit B, the inflow door 2 is operated to alter MLSS value of the circuit A, whereby eliminating such an interferencial phenomenon as variations of the amount of the returned sludge (e).
COPYRIGHT: (C)1981,JPO&Japio
JP8052379A 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank Granted JPS565187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8052379A JPS565187A (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
JP8052379A JPS565187A (en) 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank

Publications (2)

Publication Number Publication Date
JPS565187A true JPS565187A (en) 1981-01-20
JPS574391B2 JPS574391B2 (en) 1982-01-26

Family

ID=13720666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8052379A Granted JPS565187A (en) 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank

Country Status (1)

Country Link
JP (1) JPS565187A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01254333A (en) * 1988-02-26 1989-10-11 British Nuclear Fuels Plc Method of sealing vessel, method of filling vessel with substance and device used for transferring substance to vessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01254333A (en) * 1988-02-26 1989-10-11 British Nuclear Fuels Plc Method of sealing vessel, method of filling vessel with substance and device used for transferring substance to vessel

Also Published As

Publication number Publication date
JPS574391B2 (en) 1982-01-26

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