JPS571491A - Disposal of sewage - Google Patents

Disposal of sewage

Info

Publication number
JPS571491A
JPS571491A JP7544680A JP7544680A JPS571491A JP S571491 A JPS571491 A JP S571491A JP 7544680 A JP7544680 A JP 7544680A JP 7544680 A JP7544680 A JP 7544680A JP S571491 A JPS571491 A JP S571491A
Authority
JP
Japan
Prior art keywords
sludge
vessel
liquid
mixture
returned
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
JP7544680A
Other languages
Japanese (ja)
Other versions
JPS6249118B2 (en
Inventor
Masahide Shibata
Tetsuro Fukase
Arimasa Miyaji
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.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water Industries 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 Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Priority to JP7544680A priority Critical patent/JPS571491A/en
Publication of JPS571491A publication Critical patent/JPS571491A/en
Publication of JPS6249118B2 publication Critical patent/JPS6249118B2/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)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE: To facilitate the disposal of sewage with high efficiency even at a lowered air feed, in a sluge disposal process including steps of reaerating and returning sludge, by mixing the sewage with the returned sludge, subjecting the mixture to an anaerobic treatment, and then aerating the treated mixture.
CONSTITUTION: Raw water 5 is introduced with returned sludge 6 into an anaerobic vessel 1, where the mixture is agitated gently and anaerobically treated for 15W 120min or so. In this case, the atmosphere may be maintained under a completely anaerobic condition, though it is not essential. the atmophere may be kept under a condition such that oxygen is not supplied positively. Consequently, the vessel 1 may be left open. A liquid in the vessel 1 is gradually introduced into an aeration vessel 2, where the liquid is aerated for 20W60min or so. The liquid in the vessel 2 is gradually introduced into a sedimentation vessel 3, where the liquid is separated into purified water 7 and active sludge 8 by solid-liquid separation. A part of the sludge 8 is fed to a reaeration vessel 4, where the sludge 8 is reaerated for 15W 120min or so, and returned as retured sludge 6. The remainder is discharged as excess sludge 9 outside the system.
COPYRIGHT: (C)1982,JPO&Japio
JP7544680A 1980-06-06 1980-06-06 Disposal of sewage Granted JPS571491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7544680A JPS571491A (en) 1980-06-06 1980-06-06 Disposal of sewage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7544680A JPS571491A (en) 1980-06-06 1980-06-06 Disposal of sewage

Publications (2)

Publication Number Publication Date
JPS571491A true JPS571491A (en) 1982-01-06
JPS6249118B2 JPS6249118B2 (en) 1987-10-16

Family

ID=13576484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7544680A Granted JPS571491A (en) 1980-06-06 1980-06-06 Disposal of sewage

Country Status (1)

Country Link
JP (1) JPS571491A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5898194A (en) * 1981-12-07 1983-06-10 Nishihara Environ Sanit Res Corp Purification of filthy water
JPS5952592A (en) * 1982-09-18 1984-03-27 Ukai Nobuyoshi Biological treatment of waste water containing organic substance
JPS5952590A (en) * 1982-09-18 1984-03-27 Ukai Nobuyoshi Biological treatment of waste water containing organic substance
JP2007105580A (en) * 2005-10-12 2007-04-26 Kurita Water Ind Ltd Method and apparatus for biologically treating organic drainage
JP2007275847A (en) * 2006-04-11 2007-10-25 Sumitomo Heavy Industries Environment Co Ltd Wastewater treating apparatus and wastewater treating method
JP2008237992A (en) * 2007-03-26 2008-10-09 Sumiju Kankyo Engineering Kk Apparatus and method for wastewater treatment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4581593B2 (en) * 2004-09-22 2010-11-17 栗田工業株式会社 Organic wastewater treatment method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056465A (en) * 1976-04-12 1977-11-01 Air Products And Chemicals, Inc. Production of non-bulking activated sludge
JPS5518558A (en) * 1978-07-27 1980-02-08 Kagaku Gijutsu Shinkoukai Recovering method for copper from ferric chloride etching waste solution containing copper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056465A (en) * 1976-04-12 1977-11-01 Air Products And Chemicals, Inc. Production of non-bulking activated sludge
JPS5518558A (en) * 1978-07-27 1980-02-08 Kagaku Gijutsu Shinkoukai Recovering method for copper from ferric chloride etching waste solution containing copper

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5898194A (en) * 1981-12-07 1983-06-10 Nishihara Environ Sanit Res Corp Purification of filthy water
JPH0230758B2 (en) * 1981-12-07 1990-07-09 Nishihara Kankyo Eisei Kenkyusho Kk
JPS5952592A (en) * 1982-09-18 1984-03-27 Ukai Nobuyoshi Biological treatment of waste water containing organic substance
JPS5952590A (en) * 1982-09-18 1984-03-27 Ukai Nobuyoshi Biological treatment of waste water containing organic substance
JP2007105580A (en) * 2005-10-12 2007-04-26 Kurita Water Ind Ltd Method and apparatus for biologically treating organic drainage
JP2007275847A (en) * 2006-04-11 2007-10-25 Sumitomo Heavy Industries Environment Co Ltd Wastewater treating apparatus and wastewater treating method
JP2008237992A (en) * 2007-03-26 2008-10-09 Sumiju Kankyo Engineering Kk Apparatus and method for wastewater treatment

Also Published As

Publication number Publication date
JPS6249118B2 (en) 1987-10-16

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