JPS571490A - Method and apparatus for automatical control of aeration in active sludge process for disposal of sewage - Google Patents

Method and apparatus for automatical control of aeration in active sludge process for disposal of sewage

Info

Publication number
JPS571490A
JPS571490A JP7489780A JP7489780A JPS571490A JP S571490 A JPS571490 A JP S571490A JP 7489780 A JP7489780 A JP 7489780A JP 7489780 A JP7489780 A JP 7489780A JP S571490 A JPS571490 A JP S571490A
Authority
JP
Japan
Prior art keywords
aeration
vessel
amount
detected
sensor
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
JP7489780A
Other languages
Japanese (ja)
Inventor
Tsuneo Suzuki
Yasuyuki Yagi
Moriyuki Sumiyoshi
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 Plant Engineering and Construction 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 Hitachi Plant Engineering and Construction Co Ltd filed Critical Hitachi Plant Engineering and Construction Co Ltd
Priority to JP7489780A priority Critical patent/JPS571490A/en
Publication of JPS571490A publication Critical patent/JPS571490A/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 lower running cost, by automatically controlling an amount of necessary air in an aeration vessel on the bases of amounts of dissolved oxygen and suspensoid mass in the final aerating zone of the aeration vessel.
CONSTITUTION: An active sludge processing apparatus comprises a raw water reservoir 1, a raw water pump 2, an aeration vessel 3, a sedimentation vessel 4, a returned sludge pump 5 and air compressors 6, 7. The vessel 3 is provided with baffle walls 14. Automatic aeration-controlling means is arranged in the final aerating zone of the vessel 3. A mixed solution after aeration is s ucked up by a pump 10. An amount of residual oxygen in the solution after consumption is detected by a sensor 9 in a conduit. The detected value is fed to a controller 12. On the other hand, when the amount of residual dissolved oxygen detected by a sensor 8 at the inlet side of the final aerating zone lowers to a level of 1W4mg/l or so, the compressor 6 is driven by the controller 12. The controller 12 calculates an oxygen consumption rate from a difference between the values detected by the sensors 8 and 9 and a value detected by an active sludge amount sensor 13 at the same position of the sensor 8. When the oxygen consumption rate reaches the amount of endogenous respiration of the active sludge, the compressor 6 is stopped.
COPYRIGHT: (C)1982,JPO&Japio
JP7489780A 1980-06-05 1980-06-05 Method and apparatus for automatical control of aeration in active sludge process for disposal of sewage Pending JPS571490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7489780A JPS571490A (en) 1980-06-05 1980-06-05 Method and apparatus for automatical control of aeration in active sludge process for disposal of sewage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7489780A JPS571490A (en) 1980-06-05 1980-06-05 Method and apparatus for automatical control of aeration in active sludge process for disposal of sewage

Publications (1)

Publication Number Publication Date
JPS571490A true JPS571490A (en) 1982-01-06

Family

ID=13560634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7489780A Pending JPS571490A (en) 1980-06-05 1980-06-05 Method and apparatus for automatical control of aeration in active sludge process for disposal of sewage

Country Status (1)

Country Link
JP (1) JPS571490A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02169095A (en) * 1988-12-20 1990-06-29 Hanshin Doryoku Kikai Kk Treatment of sewage and controller
JPH05139753A (en) * 1991-11-20 1993-06-08 Union Carbide Ind Gases Technol Corp Ceiling mounting type auxiliary oxygen burner
JP2008142626A (en) * 2006-12-11 2008-06-26 Matsushita Electric Ind Co Ltd Aeration tank control method
JP2008168187A (en) * 2007-01-10 2008-07-24 Matsushita Electric Ind Co Ltd Aeration tank control method
WO2009003800A1 (en) * 2007-07-02 2009-01-08 Reinhard Boller Method for determining the amount of oxygen introduced into a process tank of a biological treatment works during a ventilation process
US20120267318A1 (en) * 2011-04-20 2012-10-25 Paul Hatten Water treatment systems and methods

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02169095A (en) * 1988-12-20 1990-06-29 Hanshin Doryoku Kikai Kk Treatment of sewage and controller
JPH05139753A (en) * 1991-11-20 1993-06-08 Union Carbide Ind Gases Technol Corp Ceiling mounting type auxiliary oxygen burner
JP2008142626A (en) * 2006-12-11 2008-06-26 Matsushita Electric Ind Co Ltd Aeration tank control method
JP2008168187A (en) * 2007-01-10 2008-07-24 Matsushita Electric Ind Co Ltd Aeration tank control method
WO2009003800A1 (en) * 2007-07-02 2009-01-08 Reinhard Boller Method for determining the amount of oxygen introduced into a process tank of a biological treatment works during a ventilation process
US20120267318A1 (en) * 2011-04-20 2012-10-25 Paul Hatten Water treatment systems and methods

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