JPS5444596A - Measuring apparatus of oxygen utilizatin speed - Google Patents

Measuring apparatus of oxygen utilizatin speed

Info

Publication number
JPS5444596A
JPS5444596A JP11130777A JP11130777A JPS5444596A JP S5444596 A JPS5444596 A JP S5444596A JP 11130777 A JP11130777 A JP 11130777A JP 11130777 A JP11130777 A JP 11130777A JP S5444596 A JPS5444596 A JP S5444596A
Authority
JP
Japan
Prior art keywords
oxygen
pipe
dissolved oxygen
speed
mixed solution
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
JP11130777A
Other languages
Japanese (ja)
Inventor
Junji Hizuka
Kazuo Shibazaki
Kenichi Sugano
Yuichi Sato
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 JP11130777A priority Critical patent/JPS5444596A/en
Publication of JPS5444596A publication Critical patent/JPS5444596A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable the history of oxygen utilization speed of activated sludge to be continuously and readily measured by providing dissolved oxygen meters measuring the dissolved oxygn quantity of mixed solution at two or more positions within measuring pipe.
CONSTITUTION: When a suction pump 4 is operated after closing a solenoid valve 20 and opening the solenoid valve 19 on the measuring pipe 3 side, the mixed solution 1 containing activated sludge in an aerating tank flows in the pipe 3 at a constant speed in the arrow direction and is returned to the aerating tank by passing through a spiral part 2. While the solution is flowing in the pipe 3, the organic substances in the mixed solution 1 are decomposed by the activated sludge and the dissolved oxygen in the solution 1 is consumed and decreases. Dissolved oxygen meters 5, 5' are interposed in the beginning end and final end part of the spiral part 2 of the pipe 3. The current values corresponding to the dissolved oxygen quantities are measured with the oxygen meter 5 at the beginning end part at the t1 time and with the oxygen meter 5' at the final end part at the t2 time. The dissolved oxygen concentration difference δC after the t2-t1 time is detected with an oxyge concentration difference detector 14, thus the oxygen utilization speed in the sludge may be readily and continuously measured.
COPYRIGHT: (C)1979,JPO&Japio
JP11130777A 1977-09-16 1977-09-16 Measuring apparatus of oxygen utilizatin speed Pending JPS5444596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11130777A JPS5444596A (en) 1977-09-16 1977-09-16 Measuring apparatus of oxygen utilizatin speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11130777A JPS5444596A (en) 1977-09-16 1977-09-16 Measuring apparatus of oxygen utilizatin speed

Publications (1)

Publication Number Publication Date
JPS5444596A true JPS5444596A (en) 1979-04-09

Family

ID=14557898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11130777A Pending JPS5444596A (en) 1977-09-16 1977-09-16 Measuring apparatus of oxygen utilizatin speed

Country Status (1)

Country Link
JP (1) JPS5444596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6123846A (en) * 1998-02-16 2000-09-26 Nec Corporation Activated-sludge processing apparatus and method for control of sludge to be returned

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946793A (en) * 1972-07-27 1974-05-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946793A (en) * 1972-07-27 1974-05-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6123846A (en) * 1998-02-16 2000-09-26 Nec Corporation Activated-sludge processing apparatus and method for control of sludge to be returned

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