JPS567691A - Discarding method for sludge in activated sludge method waste water treating system - Google Patents

Discarding method for sludge in activated sludge method waste water treating system

Info

Publication number
JPS567691A
JPS567691A JP8277779A JP8277779A JPS567691A JP S567691 A JPS567691 A JP S567691A JP 8277779 A JP8277779 A JP 8277779A JP 8277779 A JP8277779 A JP 8277779A JP S567691 A JPS567691 A JP S567691A
Authority
JP
Japan
Prior art keywords
sludge
waste water
constituents
bod
activated sludge
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
JP8277779A
Other languages
Japanese (ja)
Inventor
Nobuo Masuda
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP8277779A priority Critical patent/JPS567691A/en
Publication of JPS567691A publication Critical patent/JPS567691A/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)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE: To inprove the quality of treated water, in the treatment of waste water using activated sludge for treating BOD constituents and ammoniacal nitrogen, by considering discarded sludge to the total amount of retained sludge to be a function of liq. temp. of an aeration tank to activate microorganisms in the system.
CONSTITUTION: In the treatment of waste water by an activated sludge method for removing BOD constituents and converting ammoniacal nitrogen into nitrate nitrogen, the ratio of the amount of excess sludge discarded per day to the amount of sludge retained is adjusted to the 0.007t-0.025W0.004t-0.03 range when liq. temp. of an aeration tank is t°C. Thus, the operational conditions of the system are maintained well, preventing deterioration of bacteria and activating microorganisms in the system, whereby the removal of BOD constituents and the conversion of ammoniacal nitrogen into nitrate nitrogen are performed stably to improve the quality of treated water.
COPYRIGHT: (C)1981,JPO&Japio
JP8277779A 1979-06-30 1979-06-30 Discarding method for sludge in activated sludge method waste water treating system Pending JPS567691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8277779A JPS567691A (en) 1979-06-30 1979-06-30 Discarding method for sludge in activated sludge method waste water treating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8277779A JPS567691A (en) 1979-06-30 1979-06-30 Discarding method for sludge in activated sludge method waste water treating system

Publications (1)

Publication Number Publication Date
JPS567691A true JPS567691A (en) 1981-01-26

Family

ID=13783846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8277779A Pending JPS567691A (en) 1979-06-30 1979-06-30 Discarding method for sludge in activated sludge method waste water treating system

Country Status (1)

Country Link
JP (1) JPS567691A (en)

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