JPS55137095A - Apparatus for controlling withdrawn sludge flow amount from final precipitating pond - Google Patents

Apparatus for controlling withdrawn sludge flow amount from final precipitating pond

Info

Publication number
JPS55137095A
JPS55137095A JP4444479A JP4444479A JPS55137095A JP S55137095 A JPS55137095 A JP S55137095A JP 4444479 A JP4444479 A JP 4444479A JP 4444479 A JP4444479 A JP 4444479A JP S55137095 A JPS55137095 A JP S55137095A
Authority
JP
Japan
Prior art keywords
sludge
flow amount
operating portion
sludge flow
withdrawn
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
JP4444479A
Other languages
Japanese (ja)
Inventor
Kazuo Shibazaki
Junji Hizuka
Chikau Yamanaka
Masamichi Machida
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 JP4444479A priority Critical patent/JPS55137095A/en
Publication of JPS55137095A publication Critical patent/JPS55137095A/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

Abstract

PURPOSE: To obtain a withdrawn sludge flow amount controlling apparatus capable of stabilizing a sludge interface level by providing the first operating portion displaying the elastic coefficient and the stress relaxation coefficient as a function of a sludge concn., the second operating portion estimating an interface level precipitating speed of a sludge liquid flowed into a final precipitating pond, the third operating portion estimating an overage interface level of a sludge liquid and a regulating portion controlling a withdrawn sludge flow amount.
CONSTITUTION: If the MLSS 12 of a sludge liquid flowed out from an aerating tank 2 and an interface precipitating speed 10 flowed into a final precipitating pond 3 is periodically measured and the measured value is applied to an operating portion 11, the elastic coefficient and the stress relaxation coefficient are caluculated as a function of a sludge initial concn. On the other hand, if a practically measured value of an inflow sewage amount 13, a return sludge flow amount 14 and a withdrawn sludge flow amount 15 are applied to an operating portion 16, an average interface level within a final precipitating pond. Subsequently, these values are compared to an upper and a lower limit value 18, 19 preliminarily set to a comparing circuit 17 to calculate a corrected amount of a withdrawing sludge flow amount in an operating portion 20 and a withdrawing valve 23 is controlled through a regulating portion 22.
COPYRIGHT: (C)1980,JPO&Japio
JP4444479A 1979-04-13 1979-04-13 Apparatus for controlling withdrawn sludge flow amount from final precipitating pond Pending JPS55137095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4444479A JPS55137095A (en) 1979-04-13 1979-04-13 Apparatus for controlling withdrawn sludge flow amount from final precipitating pond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4444479A JPS55137095A (en) 1979-04-13 1979-04-13 Apparatus for controlling withdrawn sludge flow amount from final precipitating pond

Publications (1)

Publication Number Publication Date
JPS55137095A true JPS55137095A (en) 1980-10-25

Family

ID=12691654

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4444479A Pending JPS55137095A (en) 1979-04-13 1979-04-13 Apparatus for controlling withdrawn sludge flow amount from final precipitating pond

Country Status (1)

Country Link
JP (1) JPS55137095A (en)

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