JPS54120952A - Method of determining oxygen utilization rate for mixed liquid - Google Patents

Method of determining oxygen utilization rate for mixed liquid

Info

Publication number
JPS54120952A
JPS54120952A JP2766178A JP2766178A JPS54120952A JP S54120952 A JPS54120952 A JP S54120952A JP 2766178 A JP2766178 A JP 2766178A JP 2766178 A JP2766178 A JP 2766178A JP S54120952 A JPS54120952 A JP S54120952A
Authority
JP
Japan
Prior art keywords
mixed liquid
passage
utilization rate
time
circulating pump
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
JP2766178A
Other languages
Japanese (ja)
Inventor
Katsuhiro Ishikawa
Shuichi Yoshida
Masao Kaneko
Kyozo Kawachi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2766178A priority Critical patent/JPS54120952A/en
Publication of JPS54120952A publication Critical patent/JPS54120952A/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

Abstract

PURPOSE: To determine the oxygen utilization rate change with the passage of time, by locating an opening and a closing valve at a circulating mixed liquid flow passage comprising of solution residual oxygen meter detecting element and a circulating pump so that the flow passage can be isolated from the air, and by operating a measurement process by means of a time sequence.
CONSTITUTION: After mixed liquid in an aeration tank 1 has been introduced into a tank 9, it will be aerated, and discharged from a circulating pump 14 after being detected by a solution residual oxygen meter detecting element 13. At that time new mixed liquid shall be fully filled into a mixed liquid passage by operating an opening valve 8c and a closing valve 8d. And the mixed liquid kept between the opening valve 8c and the closing valve 8d is circulated at higher than a given speed by means of the circulating pump 14. The change with the passage of time (a drop) concerning solution residual oxygen density in the mixed liquid thus is determined. The change of oxygen utilization rate in the mixed liquid can be constantly and accurately determined by repeating automatically each aforesaid process by means of a time sequence.
COPYRIGHT: (C)1979,JPO&Japio
JP2766178A 1978-03-13 1978-03-13 Method of determining oxygen utilization rate for mixed liquid Pending JPS54120952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2766178A JPS54120952A (en) 1978-03-13 1978-03-13 Method of determining oxygen utilization rate for mixed liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2766178A JPS54120952A (en) 1978-03-13 1978-03-13 Method of determining oxygen utilization rate for mixed liquid

Publications (1)

Publication Number Publication Date
JPS54120952A true JPS54120952A (en) 1979-09-19

Family

ID=12227110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2766178A Pending JPS54120952A (en) 1978-03-13 1978-03-13 Method of determining oxygen utilization rate for mixed liquid

Country Status (1)

Country Link
JP (1) JPS54120952A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159896A (en) * 1982-03-17 1983-09-22 Sintokogio Ltd Discriminating device of characteristic of activated sludge liquid
AU712746B2 (en) * 1995-06-22 1999-11-18 SFC Environmental Technologies PVT. LTD Controlling wastewater treatment by monitoring oxygen utilisation rates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159896A (en) * 1982-03-17 1983-09-22 Sintokogio Ltd Discriminating device of characteristic of activated sludge liquid
AU712746B2 (en) * 1995-06-22 1999-11-18 SFC Environmental Technologies PVT. LTD Controlling wastewater treatment by monitoring oxygen utilisation rates

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