JPS5549196A - Control method for excess sludge extraction - Google Patents

Control method for excess sludge extraction

Info

Publication number
JPS5549196A
JPS5549196A JP12146878A JP12146878A JPS5549196A JP S5549196 A JPS5549196 A JP S5549196A JP 12146878 A JP12146878 A JP 12146878A JP 12146878 A JP12146878 A JP 12146878A JP S5549196 A JPS5549196 A JP S5549196A
Authority
JP
Japan
Prior art keywords
mlss
return sludge
aeration tank
sludge concentration
concentration
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
JP12146878A
Other languages
Japanese (ja)
Inventor
Toshihiko Ishizaki
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 JP12146878A priority Critical patent/JPS5549196A/en
Publication of JPS5549196A publication Critical patent/JPS5549196A/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 keep the changes in MLSS concentration in the aeration tank within the tolerable range, by automatically correcting the setting width of return sludge concentration from the experienced values of changes in MLSS in the aeration tank.
CONSTITUTION: A return sludge concentration in an aeration tank 1 is detected by a return sludge densitometer 5, and MLSS is detected by an MLSS meter 6. These detection signals are inputted into an operation control device 7, and the MLSS value and return sludge concentration value in the aeration tank 1 are checked against the tolerable range. The differences between the maximum and minimum of the MLSS values and the upper and lower limits in the tolerable range throughout a whole day are operated, and the setting width of the return sludge concentration is corrected accordingly. The return sludge concentration to be inputted is checked with respect to this corrected setting width, and an extraction start or stop signal of the excess sludge is outputted to an excess sludge pump. By this control method stable water treating effect may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP12146878A 1978-10-04 1978-10-04 Control method for excess sludge extraction Pending JPS5549196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12146878A JPS5549196A (en) 1978-10-04 1978-10-04 Control method for excess sludge extraction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12146878A JPS5549196A (en) 1978-10-04 1978-10-04 Control method for excess sludge extraction

Publications (1)

Publication Number Publication Date
JPS5549196A true JPS5549196A (en) 1980-04-09

Family

ID=14811888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12146878A Pending JPS5549196A (en) 1978-10-04 1978-10-04 Control method for excess sludge extraction

Country Status (1)

Country Link
JP (1) JPS5549196A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443594U (en) * 1977-09-01 1979-03-24
JPS58166897U (en) * 1982-04-30 1983-11-07 株式会社西原環境衛生研究所 Batch type activated sludge treatment equipment
JPS5955392A (en) * 1982-09-22 1984-03-30 Toshiba Corp Adjustment device for sludge water
JP2014000538A (en) * 2012-06-20 2014-01-09 Meidensha Corp Method for controlling active sludge concentration

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443594U (en) * 1977-09-01 1979-03-24
JPS58166897U (en) * 1982-04-30 1983-11-07 株式会社西原環境衛生研究所 Batch type activated sludge treatment equipment
JPH022479Y2 (en) * 1982-04-30 1990-01-22
JPS5955392A (en) * 1982-09-22 1984-03-30 Toshiba Corp Adjustment device for sludge water
JP2014000538A (en) * 2012-06-20 2014-01-09 Meidensha Corp Method for controlling active sludge concentration

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