JPS5544332A - Control method of activated sludge water treating apparatus - Google Patents

Control method of activated sludge water treating apparatus

Info

Publication number
JPS5544332A
JPS5544332A JP11742278A JP11742278A JPS5544332A JP S5544332 A JPS5544332 A JP S5544332A JP 11742278 A JP11742278 A JP 11742278A JP 11742278 A JP11742278 A JP 11742278A JP S5544332 A JPS5544332 A JP S5544332A
Authority
JP
Japan
Prior art keywords
sludge
concentration
influent water
maintained
ratio
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
JP11742278A
Other languages
Japanese (ja)
Other versions
JPS6120357B2 (en
Inventor
Toshio Hisaie
Yukio Saito
Shunsuke Nokita
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11742278A priority Critical patent/JPS5544332A/en
Publication of JPS5544332A publication Critical patent/JPS5544332A/en
Publication of JPS6120357B2 publication Critical patent/JPS6120357B2/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

Abstract

PURPOSE: To enable sludge volume index to be maintained at a minimum range by so adding nitrogen sources or carbon sources into the influent water to an aerating tank that the ratio between the organic polluting substance concentration and total nitrogen concentration in said influent water is maintained within the specified ratio.
CONSTITUTION: At the time of treating the foul water containing organic substances by an activated sludge method, nitrogen sources such as ammonia, urea, etc. or organic carbon sources such as methanol, ethanol, etc. are added into the influent water so as to maintain the ratio γ between the organic polluting substance concentration and total nitrogen concentration (TN) of BOD standard in the influent water to the aerating tank at the specified value (desirably about 18W35), whereby the sludge volume index [SVI(ml/g)=(rate of sludge sedimentation of mixed solutions×104)/sludge concentration of aerating tank (mg/l)] is maintained in the minimum range.
COPYRIGHT: (C)1980,JPO&Japio
JP11742278A 1978-09-26 1978-09-26 Control method of activated sludge water treating apparatus Granted JPS5544332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11742278A JPS5544332A (en) 1978-09-26 1978-09-26 Control method of activated sludge water treating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11742278A JPS5544332A (en) 1978-09-26 1978-09-26 Control method of activated sludge water treating apparatus

Publications (2)

Publication Number Publication Date
JPS5544332A true JPS5544332A (en) 1980-03-28
JPS6120357B2 JPS6120357B2 (en) 1986-05-21

Family

ID=14711245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11742278A Granted JPS5544332A (en) 1978-09-26 1978-09-26 Control method of activated sludge water treating apparatus

Country Status (1)

Country Link
JP (1) JPS5544332A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772396A (en) * 1986-11-26 1988-09-20 Amoco Corporation Method for controlling filamentous organisms in wastewater treatment processes
EP0831064A3 (en) * 1996-09-19 1999-05-12 Alfred Albert Process for adjusting a mixture of microorganisms and nutrients in a biotechnological process, in particular an activated sludge process for waste water treatment
WO2000047525A1 (en) * 1999-02-11 2000-08-17 Zeolite Australia Limited Process for the removal of suspended and other material from waste water
JP2001334285A (en) * 2000-05-25 2001-12-04 Japan Organo Co Ltd Apparatus for biologically treating organic wastewater
JP2011110501A (en) * 2009-11-27 2011-06-09 Hitachi Ltd Water treatment equipment
JP2011147858A (en) * 2010-01-20 2011-08-04 Hitachi Ltd Apparatus and method for treating sewage
JP2013238496A (en) * 2012-05-15 2013-11-28 Metawater Co Ltd Pretreatment apparatus of infrared analyzer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772396A (en) * 1986-11-26 1988-09-20 Amoco Corporation Method for controlling filamentous organisms in wastewater treatment processes
EP0831064A3 (en) * 1996-09-19 1999-05-12 Alfred Albert Process for adjusting a mixture of microorganisms and nutrients in a biotechnological process, in particular an activated sludge process for waste water treatment
WO2000047525A1 (en) * 1999-02-11 2000-08-17 Zeolite Australia Limited Process for the removal of suspended and other material from waste water
JP2001334285A (en) * 2000-05-25 2001-12-04 Japan Organo Co Ltd Apparatus for biologically treating organic wastewater
JP2011110501A (en) * 2009-11-27 2011-06-09 Hitachi Ltd Water treatment equipment
JP2011147858A (en) * 2010-01-20 2011-08-04 Hitachi Ltd Apparatus and method for treating sewage
JP2013238496A (en) * 2012-05-15 2013-11-28 Metawater Co Ltd Pretreatment apparatus of infrared analyzer

Also Published As

Publication number Publication date
JPS6120357B2 (en) 1986-05-21

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