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JPS5475863A - Controlling of sludge in active sludge plant - Google Patents

Controlling of sludge in active sludge plant

Info

Publication number
JPS5475863A
JPS5475863A JP14338577A JP14338577A JPS5475863A JP S5475863 A JPS5475863 A JP S5475863A JP 14338577 A JP14338577 A JP 14338577A JP 14338577 A JP14338577 A JP 14338577A JP S5475863 A JPS5475863 A JP S5475863A
Authority
JP
Japan
Prior art keywords
sludge
plant
settling pond
controlling
fluctuation
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
JP14338577A
Other languages
Japanese (ja)
Other versions
JPS6335316B2 (en
Inventor
Taichi Takechi
Itaru Takase
Ryuichi Inaba
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 JP14338577A priority Critical patent/JPS5475863A/en
Publication of JPS5475863A publication Critical patent/JPS5475863A/en
Publication of JPS6335316B2 publication Critical patent/JPS6335316B2/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 easily perform the stable operation of an active sludge plant for treating waste water, by controlling the sludge in the plant.
CONSTITUTION: The active sludge plant comprises a first settling pond 1, an aeration vessel 2 equipped with an air dispersing unit 10, and a second setting pond 3. The quantity of surplus sludge extracted from the second settling pond 3 is calculated from sludge brought in as solid of introduced water, sludge taken out while suspended in outgoing water and a calculated value of BOD determined from the sludge changing ratio on the basis of the past operation result or an experiment so as to operate a pump 20. The modification of the quantity of the extracted sludge is performed by feedback- controlling depending on the fluctuation in the sludge boundary in the second settling pond 3 the quantity of sludge returned from the second settling pond 3 to the aeration vessel 2 when the load fluctuation is low, or by return ratio prediction control depending on the fluctuation in the sludge boundary when the load fluctuation is high.
COPYRIGHT: (C)1979,JPO&Japio
JP14338577A 1977-11-30 1977-11-30 Controlling of sludge in active sludge plant Granted JPS5475863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14338577A JPS5475863A (en) 1977-11-30 1977-11-30 Controlling of sludge in active sludge plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14338577A JPS5475863A (en) 1977-11-30 1977-11-30 Controlling of sludge in active sludge plant

Publications (2)

Publication Number Publication Date
JPS5475863A true JPS5475863A (en) 1979-06-18
JPS6335316B2 JPS6335316B2 (en) 1988-07-14

Family

ID=15337534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14338577A Granted JPS5475863A (en) 1977-11-30 1977-11-30 Controlling of sludge in active sludge plant

Country Status (1)

Country Link
JP (1) JPS5475863A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009505822A (en) * 2005-08-24 2009-02-12 パークソン コーポレーション Denitrification process and denitrification device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009505822A (en) * 2005-08-24 2009-02-12 パークソン コーポレーション Denitrification process and denitrification device

Also Published As

Publication number Publication date
JPS6335316B2 (en) 1988-07-14

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