JPS565188A - Microorganism concentration controller for activated sludge in aeration tank - Google Patents

Microorganism concentration controller for activated sludge in aeration tank

Info

Publication number
JPS565188A
JPS565188A JP8052479A JP8052479A JPS565188A JP S565188 A JPS565188 A JP S565188A JP 8052479 A JP8052479 A JP 8052479A JP 8052479 A JP8052479 A JP 8052479A JP S565188 A JPS565188 A JP S565188A
Authority
JP
Japan
Prior art keywords
mlss
sludge
activated sludge
aeration tank
circuit
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
JP8052479A
Other languages
Japanese (ja)
Other versions
JPS574392B2 (en
Inventor
Yoshizumi Ogishima
Takuji Nakazato
Zenta Moriguchi
Kazuo Maeda
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 JP8052479A priority Critical patent/JPS565188A/en
Publication of JPS565188A publication Critical patent/JPS565188A/en
Publication of JPS574392B2 publication Critical patent/JPS574392B2/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 an inflow door for sewage by feeding forward of MLSS (activated sludge microorganism concentration) of other circuit on a complementary basis for keeping MLSS of a specific circuit where the activity for treating the activated sludge is highest constant in an aeration tank operated by a step aeration method.
CONSTITUTION: In the aeration tank 1 having the circuits AWD, the sewages (a)W (d) are dividedly charged into respective circuits and then discharged in the form of the treated water (w). In this case, the MLSS meter 4 is provided in the circuit B where the activated sludge treatment activity is highest, and the signal of the MLSS meter 4 is compared with a set MLSS value Cb* and then the amount of returned sludge is controlled by the valve 3 through the returned sludge flowmeter 7. On the other hand, on the basis of the returned sludge concentration Cr, the incoming sludge concentration Cin, and the returned sludge flow rate Qr, the sewage inflow door 2 is controlled through the arithmetic circuit 9.
COPYRIGHT: (C)1981,JPO&Japio
JP8052479A 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank Granted JPS565188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8052479A JPS565188A (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
JP8052479A JPS565188A (en) 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank

Publications (2)

Publication Number Publication Date
JPS565188A true JPS565188A (en) 1981-01-20
JPS574392B2 JPS574392B2 (en) 1982-01-26

Family

ID=13720697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8052479A Granted JPS565188A (en) 1979-06-26 1979-06-26 Microorganism concentration controller for activated sludge in aeration tank

Country Status (1)

Country Link
JP (1) JPS565188A (en)

Also Published As

Publication number Publication date
JPS574392B2 (en) 1982-01-26

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