JPS5613085A - Control unit of excess sludge flow rate - Google Patents

Control unit of excess sludge flow rate

Info

Publication number
JPS5613085A
JPS5613085A JP8807279A JP8807279A JPS5613085A JP S5613085 A JPS5613085 A JP S5613085A JP 8807279 A JP8807279 A JP 8807279A JP 8807279 A JP8807279 A JP 8807279A JP S5613085 A JPS5613085 A JP S5613085A
Authority
JP
Japan
Prior art keywords
sludge
flow rate
basin
weight
control unit
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
JP8807279A
Other languages
Japanese (ja)
Inventor
Kazuo Shibazaki
Chikau Yamanaka
Junji Hizuka
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 JP8807279A priority Critical patent/JPS5613085A/en
Publication of JPS5613085A publication Critical patent/JPS5613085A/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: A titled flow rate control unit which enables treated water of good quality to be stably obtained by accurately and easily obtaining the weight of the sludge stagnating in a final sedimentation basin through calculation and further controlling the flow rate of excess sludge with a mean cell stagnating time as an index.
CONSTITUTION: This flow rate control unit has an aeration tank 2 supplying waste water, activated sludge and air as well as a final sedimentation basin 3 making solid-liquid separation of the mixed liquid flowing out from this tank 2 to treated water and activated sludge. The activated sludge accumlated in the bottom of the basin 3 is drawn and part thereof is returned 4 to the tank 2, whereby the excess activated sludge is discharged 9 to outside the system. Then, based on the basin 3 model, the weight of the sludge stagnating in the basin 3 is accurately and easily obtained through computation. Since this enables the weight of the total sludge in the water treatment system to be obtained, it is possible to easily obtain the weight of the excess sludge for the purpose of maintaining a mean cell stagnation time accurately at a set value. As a result, the treated water of good quality may be obtained stably for a long time.
COPYRIGHT: (C)1981,JPO&Japio
JP8807279A 1979-07-13 1979-07-13 Control unit of excess sludge flow rate Pending JPS5613085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8807279A JPS5613085A (en) 1979-07-13 1979-07-13 Control unit of excess sludge flow rate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8807279A JPS5613085A (en) 1979-07-13 1979-07-13 Control unit of excess sludge flow rate

Publications (1)

Publication Number Publication Date
JPS5613085A true JPS5613085A (en) 1981-02-07

Family

ID=13932643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8807279A Pending JPS5613085A (en) 1979-07-13 1979-07-13 Control unit of excess sludge flow rate

Country Status (1)

Country Link
JP (1) JPS5613085A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219995A (en) * 1982-06-14 1983-12-21 Toshiba Corp Method and apparatus for controlling amount of activated sludge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219995A (en) * 1982-06-14 1983-12-21 Toshiba Corp Method and apparatus for controlling amount of activated sludge

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