JPS56111088A - Method for controlling dissolved oxygen of sewage treatment process - Google Patents

Method for controlling dissolved oxygen of sewage treatment process

Info

Publication number
JPS56111088A
JPS56111088A JP1249280A JP1249280A JPS56111088A JP S56111088 A JPS56111088 A JP S56111088A JP 1249280 A JP1249280 A JP 1249280A JP 1249280 A JP1249280 A JP 1249280A JP S56111088 A JPS56111088 A JP S56111088A
Authority
JP
Japan
Prior art keywords
flow rate
controlling
wind flow
valve
deviations
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
JP1249280A
Other languages
Japanese (ja)
Inventor
Nobutsugu Kato
Masami Koide
Masaya Tanuma
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 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 Ltd filed Critical Hitachi Ltd
Priority to JP1249280A priority Critical patent/JPS56111088A/en
Publication of JPS56111088A publication Critical patent/JPS56111088A/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 make possible good controlling with each tank by controlling the rate of blast free from mutual interference by considering the mutual interference by valve operations in valve controlling for the purpose of controlling the flow rate of blast.
CONSTITUTION: The actually measured value of dissolved oxygen (DO) measured with DO meters 7, 8, 9 are inputted to a calculation control unit 26, by which the deviations from target values are obtained. Next, a target wind flow rate value is obtained based on the deviations. Thence, the actually measured wind flow rate values of all the branch pipes are inputted from airflow meters 16, 17, 18 and the deviations from the target wind flow rate value are obtained. Next, valve opening change command values are obtained and are outputted to blast flow rate control valves 19, 20, 21, by which the valve opening control is executed. In this way, in order to prevent the effect of the change in the first wind flow rate upon the other thanks, the valve openings of the 2nd, 3rd valves are also regulated and therefore the wind flow rate of only the 1st tank changes and the wind flow rates of the other tanks do not change. Hence, even if the DC controlling of the 1st tank is executed, there is no effect upon the other tanks.
COPYRIGHT: (C)1981,JPO&Japio
JP1249280A 1980-02-06 1980-02-06 Method for controlling dissolved oxygen of sewage treatment process Pending JPS56111088A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1249280A JPS56111088A (en) 1980-02-06 1980-02-06 Method for controlling dissolved oxygen of sewage treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1249280A JPS56111088A (en) 1980-02-06 1980-02-06 Method for controlling dissolved oxygen of sewage treatment process

Publications (1)

Publication Number Publication Date
JPS56111088A true JPS56111088A (en) 1981-09-02

Family

ID=11806881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1249280A Pending JPS56111088A (en) 1980-02-06 1980-02-06 Method for controlling dissolved oxygen of sewage treatment process

Country Status (1)

Country Link
JP (1) JPS56111088A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194092A (en) * 1981-05-21 1982-11-29 Shinko Electric Co Ltd Adequate distributing method for wind quantity of aeration tank
JPS5827692A (en) * 1981-08-11 1983-02-18 Toshiba Corp Airflow controller for aeration vessel
JPS5864191A (en) * 1981-10-14 1983-04-16 Shinko Electric Co Ltd Method for controlling airflow
JPS6090099A (en) * 1983-10-25 1985-05-21 Shusuke Kobayashi Sewage treating apparatus
JPS60220191A (en) * 1984-04-17 1985-11-02 Toshiba Corp Air amount control apparatus of aeration tank

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194092A (en) * 1981-05-21 1982-11-29 Shinko Electric Co Ltd Adequate distributing method for wind quantity of aeration tank
JPS6316997B2 (en) * 1981-05-21 1988-04-12 Shinko Electric Co Ltd
JPS5827692A (en) * 1981-08-11 1983-02-18 Toshiba Corp Airflow controller for aeration vessel
JPS5864191A (en) * 1981-10-14 1983-04-16 Shinko Electric Co Ltd Method for controlling airflow
JPH0122837B2 (en) * 1981-10-14 1989-04-27 Shinko Electric Co Ltd
JPS6090099A (en) * 1983-10-25 1985-05-21 Shusuke Kobayashi Sewage treating apparatus
JPH0253116B2 (en) * 1983-10-25 1990-11-15 Shusuke Kobayashi
JPS60220191A (en) * 1984-04-17 1985-11-02 Toshiba Corp Air amount control apparatus of aeration tank

Similar Documents

Publication Publication Date Title
JPS56111088A (en) Method for controlling dissolved oxygen of sewage treatment process
JPS551805A (en) Water quality controller
JPS567110A (en) Operation control method for waterworks system
JPS56129088A (en) Control of air blow in sewage disposal
JPS5661589A (en) Water-level controller for side stream type condenser
JPS57194092A (en) Adequate distributing method for wind quantity of aeration tank
JPS5544376A (en) Controller for distribution pattern of dissolved oxygen in aeration tank
JPS53129788A (en) Control method for controlling flow rate or pressure by operating two or more valves
JPS5529023A (en) Controlling of pump operational number
JPS5520633A (en) Process control method of wet type lime gypsum method exhaust gas desulfurization apparatus
JPS6488722A (en) Water level controller
JPS57127401A (en) Method for controlling concentrating vessel
JPS5553653A (en) Control system for room cooler
JPS5556895A (en) Predictive controlling method for concentration of mixed liquor suspended solid in active sludge method
JPS6462712A (en) Control method for multistage series pump plant group
JPS60102997A (en) Energy-conserving type controlling method for aerating air quantity
SU1344285A1 (en) Method of water distribution in rice irrigation system
JPS5493789A (en) Flow quantity controlling method and its device
JPS5534761A (en) Flow rate changeover device
JPS54103904A (en) Water level controller for drain tank for low-pressure feed water heater
JPS5647801A (en) Optimal control system of parallel process
JPS51121948A (en) System for automatically controlling flow into distributing pool and p urifying pool
JPS55156204A (en) Temperature controller for cooling water drain from generating plant
JPS57101222A (en) Controlling method of flow rate distribution for liquid fuel
JPH0438474B2 (en)