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JPS57135090A - Reformation of active sludge, which has formed mold fungus-type or non mold fugus-type bulking in apparatus for purifying waste water with active sludge - Google Patents

Reformation of active sludge, which has formed mold fungus-type or non mold fugus-type bulking in apparatus for purifying waste water with active sludge

Info

Publication number
JPS57135090A
JPS57135090A JP1961281A JP1961281A JPS57135090A JP S57135090 A JPS57135090 A JP S57135090A JP 1961281 A JP1961281 A JP 1961281A JP 1961281 A JP1961281 A JP 1961281A JP S57135090 A JPS57135090 A JP S57135090A
Authority
JP
Japan
Prior art keywords
type
active sludge
bulking
mold fungus
mold
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
JP1961281A
Other languages
Japanese (ja)
Other versions
JPS6231636B2 (en
Inventor
Kiyoshi Hashimoto
Shiro Nakazato
Masahiro Fujii
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP1961281A priority Critical patent/JPS57135090A/en
Publication of JPS57135090A publication Critical patent/JPS57135090A/en
Publication of JPS6231636B2 publication Critical patent/JPS6231636B2/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 speedily recover the precipitating property of active sludge which has formed mold fungus-type or unfiliform non mold fungus-type bulking, by maintaining an aerating gas-feed condition at a level higher than 6Nm3/m2 expressed in terms of oxygen to be fed into a vessel.
CONSTITUTION: When an amount of air 5 to be fed into crude water 6 in an aeration vessel 1 through a sparger 4 from a blower 3 is about two times or more of a proper air amount, active sludge 7 which has formed mold fungus-type or non mold fungus-type bulking can not be recovered or reformed within a short period. On the other hand, about two times or more of the air amount, practically 30Nm3/m2.day of an air amount (6Nm3/m2.day expressed in terms of oxygen), is fed, an indication SV1 representing the precipitating property of the active sludge is gradually lowered by continuing said air feed for 4W20days depending on the bulking state. Thus, the bulking sludge is reformed.
COPYRIGHT: (C)1982,JPO&Japio
JP1961281A 1981-02-13 1981-02-13 Reformation of active sludge, which has formed mold fungus-type or non mold fugus-type bulking in apparatus for purifying waste water with active sludge Granted JPS57135090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1961281A JPS57135090A (en) 1981-02-13 1981-02-13 Reformation of active sludge, which has formed mold fungus-type or non mold fugus-type bulking in apparatus for purifying waste water with active sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1961281A JPS57135090A (en) 1981-02-13 1981-02-13 Reformation of active sludge, which has formed mold fungus-type or non mold fugus-type bulking in apparatus for purifying waste water with active sludge

Publications (2)

Publication Number Publication Date
JPS57135090A true JPS57135090A (en) 1982-08-20
JPS6231636B2 JPS6231636B2 (en) 1987-07-09

Family

ID=12004000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1961281A Granted JPS57135090A (en) 1981-02-13 1981-02-13 Reformation of active sludge, which has formed mold fungus-type or non mold fugus-type bulking in apparatus for purifying waste water with active sludge

Country Status (1)

Country Link
JP (1) JPS57135090A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014061469A (en) * 2012-09-20 2014-04-10 Kobelco Eco-Solutions Co Ltd Treatment method and treatment apparatus of to-be-treated water
JP2014061470A (en) * 2012-09-20 2014-04-10 Kobelco Eco-Solutions Co Ltd Treatment method and treatment apparatus of to-be-treated water

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014061469A (en) * 2012-09-20 2014-04-10 Kobelco Eco-Solutions Co Ltd Treatment method and treatment apparatus of to-be-treated water
JP2014061470A (en) * 2012-09-20 2014-04-10 Kobelco Eco-Solutions Co Ltd Treatment method and treatment apparatus of to-be-treated water

Also Published As

Publication number Publication date
JPS6231636B2 (en) 1987-07-09

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