JPS56147694A - Activated sludge treatment device - Google Patents

Activated sludge treatment device

Info

Publication number
JPS56147694A
JPS56147694A JP5220580A JP5220580A JPS56147694A JP S56147694 A JPS56147694 A JP S56147694A JP 5220580 A JP5220580 A JP 5220580A JP 5220580 A JP5220580 A JP 5220580A JP S56147694 A JPS56147694 A JP S56147694A
Authority
JP
Japan
Prior art keywords
tank
activated sludge
treated water
precipitation rate
settling
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
JP5220580A
Other languages
Japanese (ja)
Inventor
Yoshiaki Otani
Kenichiro Harita
Koji Nakai
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.)
Nissin Electric Co Ltd
Original Assignee
Nissin 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 Nissin Electric Co Ltd filed Critical Nissin Electric Co Ltd
Priority to JP5220580A priority Critical patent/JPS56147694A/en
Publication of JPS56147694A publication Critical patent/JPS56147694A/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 improve the settling characteristic of activated sludge in a settling tank and prevent the outflow of the activated sludge into a treated water tank by supplying clean water such as treated water into the settling tank when activated sludge precipitation rate degrades or when there is the possibility of this.
CONSTITUTION: A pump P4 and a piping H are provided to permit returning of treated water W from a treated water tank 5 into a settling tank 4. If necessary, a sensor S which measures the precipitation rate (SV) of activate sludge in the tank is provided in an activated sludge tank 3, and when said precipitation rate SV lowers below the set value, said P4 is run to return the treated water W into the tank 4. When the precipitation rate SV restores the set value, the operation of said pump P4 is stopped. Despite the occurrence of bulking in the activated sludge treatment device, the outflow of the activated sludge from the tank 4 is prevented and only the clean treated water is conducted into the treatment tank 5.
COPYRIGHT: (C)1981,JPO&Japio
JP5220580A 1980-04-18 1980-04-18 Activated sludge treatment device Pending JPS56147694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5220580A JPS56147694A (en) 1980-04-18 1980-04-18 Activated sludge treatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5220580A JPS56147694A (en) 1980-04-18 1980-04-18 Activated sludge treatment device

Publications (1)

Publication Number Publication Date
JPS56147694A true JPS56147694A (en) 1981-11-16

Family

ID=12908268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5220580A Pending JPS56147694A (en) 1980-04-18 1980-04-18 Activated sludge treatment device

Country Status (1)

Country Link
JP (1) JPS56147694A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60172394A (en) * 1984-02-19 1985-09-05 Kazuji Fukunaga Treatment of waste water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60172394A (en) * 1984-02-19 1985-09-05 Kazuji Fukunaga Treatment of waste water

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