JPS55145592A - Aeration rate control method in activated sludge method - Google Patents

Aeration rate control method in activated sludge method

Info

Publication number
JPS55145592A
JPS55145592A JP5328779A JP5328779A JPS55145592A JP S55145592 A JPS55145592 A JP S55145592A JP 5328779 A JP5328779 A JP 5328779A JP 5328779 A JP5328779 A JP 5328779A JP S55145592 A JPS55145592 A JP S55145592A
Authority
JP
Japan
Prior art keywords
aeration
threshold
controller
output
rate
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
JP5328779A
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 JP5328779A priority Critical patent/JPS55145592A/en
Publication of JPS55145592A publication Critical patent/JPS55145592A/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)

Abstract

PURPOSE: To control the rate of aeration to a suitable rate against the fluctuations in the amount and concentration of waste water by adding a threshold output setter which sends out the signal conforming to the change patterns of the past final day of an aeration rate controller thereby limiting the modulation of the rate of aeration.
CONSTITUTION: Based on the results of measurement of a dissolved oxygen detecting end 10a, an aeration rate controller 8 is operated to maintain the dissolved oxygen of waste water within a desired range. This condition is checked with a recorder 11. The output signal of the controller 8 is recorded in a recorder 9. This record 9 is examined and a threshold is so determined as to avoid aeration shortage. This threshold is then set in a threshold output setter 12. Then, when the output of the controller 8 reaches the preset threshold value on account of modulation or the like of the dissolved oxygen meter 10, the output of the controller 8 is maintained at the threshold value as it is by the signal from the threshold output setter 12. Thereby, excessive aeration is prevented and the quality of the treated water is well maintained.
COPYRIGHT: (C)1980,JPO&Japio
JP5328779A 1979-04-27 1979-04-27 Aeration rate control method in activated sludge method Pending JPS55145592A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5328779A JPS55145592A (en) 1979-04-27 1979-04-27 Aeration rate control method in activated sludge method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5328779A JPS55145592A (en) 1979-04-27 1979-04-27 Aeration rate control method in activated sludge method

Publications (1)

Publication Number Publication Date
JPS55145592A true JPS55145592A (en) 1980-11-13

Family

ID=12938502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5328779A Pending JPS55145592A (en) 1979-04-27 1979-04-27 Aeration rate control method in activated sludge method

Country Status (1)

Country Link
JP (1) JPS55145592A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58216787A (en) * 1982-06-11 1983-12-16 Ebara Corp Method for controlling inflow rate of gas for aeration in sewage treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58216787A (en) * 1982-06-11 1983-12-16 Ebara Corp Method for controlling inflow rate of gas for aeration in sewage treatment

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