JPS54137855A - Device for treating water - Google Patents

Device for treating water

Info

Publication number
JPS54137855A
JPS54137855A JP4637678A JP4637678A JPS54137855A JP S54137855 A JPS54137855 A JP S54137855A JP 4637678 A JP4637678 A JP 4637678A JP 4637678 A JP4637678 A JP 4637678A JP S54137855 A JPS54137855 A JP S54137855A
Authority
JP
Japan
Prior art keywords
signal
dissolved oxygen
supplied air
air quantity
controller
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
JP4637678A
Other languages
Japanese (ja)
Inventor
Takao Sekine
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP4637678A priority Critical patent/JPS54137855A/en
Publication of JPS54137855A publication Critical patent/JPS54137855A/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 keep the quantity of dissolved oxygen appropriate, by providing a dissolved oxygen meter near the outlet port of an aeration tank and using the quantity of supplied air as an index for a setpoint of the quantity of dissolved oxygen.
CONSTITUTION: Because there is a certain correlation between a supplied air quantity signal Gs and the respiration speed of activated sludge near the dissolved oxygen meter 15, the quality of treated water can be stabilized by using the supplied air quantity signal Gs as an index. An operating valve 19 and a suction valve 13 are controlled by a supplied air quantity command signal GD which is produced by the supplied air quantity controller 10 depending on the input of an introduced water quantity signal qs, a dissolved oxygen quantity deviation signal Ds and the supplied air quantity signal Gs. When the signal Gs is applied to a calculation controller 20, this signal is processed so that the signal is applied as a dissolved oxygen quantity external set signal S2 to the dissolved oxygen quantity controller 13. The signal Gs varies due to the change in the quantity of introduced water and the concentration of main substance. The signal S2 responds to the variation in the signal Gs to control the quantity of dissolved oxygen to be constant.
COPYRIGHT: (C)1979,JPO&Japio
JP4637678A 1978-04-18 1978-04-18 Device for treating water Pending JPS54137855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4637678A JPS54137855A (en) 1978-04-18 1978-04-18 Device for treating water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4637678A JPS54137855A (en) 1978-04-18 1978-04-18 Device for treating water

Publications (1)

Publication Number Publication Date
JPS54137855A true JPS54137855A (en) 1979-10-25

Family

ID=12745420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4637678A Pending JPS54137855A (en) 1978-04-18 1978-04-18 Device for treating water

Country Status (1)

Country Link
JP (1) JPS54137855A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5811098A (en) * 1981-07-15 1983-01-21 Toshiba Corp Controller for flow rate of aeration air in sewage treating plant
JPS5820295A (en) * 1981-07-30 1983-02-05 Fuji Electric Co Ltd Control of air-blasting rate in activate sludge process
JP2006192382A (en) * 2005-01-14 2006-07-27 Mitsubishi Electric Corp Water treatment system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5159452A (en) * 1974-11-21 1976-05-24 Tokyo Shibaura Electric Co
JPS524656A (en) * 1975-06-30 1977-01-13 Yokogawa Hokushin Electric Corp Control gear for methane gas tank

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5159452A (en) * 1974-11-21 1976-05-24 Tokyo Shibaura Electric Co
JPS524656A (en) * 1975-06-30 1977-01-13 Yokogawa Hokushin Electric Corp Control gear for methane gas tank

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5811098A (en) * 1981-07-15 1983-01-21 Toshiba Corp Controller for flow rate of aeration air in sewage treating plant
JPS5820295A (en) * 1981-07-30 1983-02-05 Fuji Electric Co Ltd Control of air-blasting rate in activate sludge process
JP2006192382A (en) * 2005-01-14 2006-07-27 Mitsubishi Electric Corp Water treatment system

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