JPS5579091A - Drawing controller for excessive sludge - Google Patents

Drawing controller for excessive sludge

Info

Publication number
JPS5579091A
JPS5579091A JP15161078A JP15161078A JPS5579091A JP S5579091 A JPS5579091 A JP S5579091A JP 15161078 A JP15161078 A JP 15161078A JP 15161078 A JP15161078 A JP 15161078A JP S5579091 A JPS5579091 A JP S5579091A
Authority
JP
Japan
Prior art keywords
sludge
excessive
concentration
measured
pipe
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
JP15161078A
Other languages
Japanese (ja)
Inventor
Yukihiko Yoshida
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 JP15161078A priority Critical patent/JPS5579091A/en
Publication of JPS5579091A publication Critical patent/JPS5579091A/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

Landscapes

  • Activated Sludge Processes (AREA)

Abstract

PURPOSE: To permit the drawing of excessive sludge in exact quantity by calculating the flow rate of entering sewage, the concentration of MLSS, and the concentration of return and excessive sludges.
CONSTITUTION: Sewage from the inlet tube 8 is directed to the final sedimentation basin 1 through the pipe 11 from the aeration tank 6, and also a part of sedimented sludge in the sedimentation basin 1 is sent back to the tank 6 through the pipe 13 and excessive sludge is drawn out of the pipe 5 through the regulating valve 4. The inflow QP of sewage measured by the flow meter 7 and the MLSS concentration MP measured by the densitometer 9 are put in the arithmetic unit 10 from which Qp×MP value is sent out. On the other hand, the concentration CR of return sludge measured by the return sludge densitometer 12 is put in the arithmetic unit 14 from which (QP×MP)/CR value calculated here to obtain the amount of excessive sludge is sent out as a set value to the regulator 16. Then, the amount QE of drawn excessive sludge measured by the flow meter 15 is fed back to the regulator 16 which controls the valve 4 to make zero the deviation between the set value (QP×MP)/CR and the drawn amount QE.
COPYRIGHT: (C)1980,JPO&Japio
JP15161078A 1978-12-07 1978-12-07 Drawing controller for excessive sludge Pending JPS5579091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15161078A JPS5579091A (en) 1978-12-07 1978-12-07 Drawing controller for excessive sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15161078A JPS5579091A (en) 1978-12-07 1978-12-07 Drawing controller for excessive sludge

Publications (1)

Publication Number Publication Date
JPS5579091A true JPS5579091A (en) 1980-06-14

Family

ID=15522288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15161078A Pending JPS5579091A (en) 1978-12-07 1978-12-07 Drawing controller for excessive sludge

Country Status (1)

Country Link
JP (1) JPS5579091A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014993A (en) * 1983-07-04 1985-01-25 Nishihara Environ Sanit Res Corp Batch treating apparatus for activated sludge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014993A (en) * 1983-07-04 1985-01-25 Nishihara Environ Sanit Res Corp Batch treating apparatus for activated sludge
JPS64118B2 (en) * 1983-07-04 1989-01-05 Nishihara Kankyo Eisei Kenkyusho Kk

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