JPS5727197A - Method for controlling aeration tank in active sludge water treatment process - Google Patents

Method for controlling aeration tank in active sludge water treatment process

Info

Publication number
JPS5727197A
JPS5727197A JP10116280A JP10116280A JPS5727197A JP S5727197 A JPS5727197 A JP S5727197A JP 10116280 A JP10116280 A JP 10116280A JP 10116280 A JP10116280 A JP 10116280A JP S5727197 A JPS5727197 A JP S5727197A
Authority
JP
Japan
Prior art keywords
density
aeration tank
sludge
measured
water treatment
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
JP10116280A
Other languages
Japanese (ja)
Inventor
Yukio Saito
Shunsuke Nokita
Shoji Watanabe
Kenji Baba
Shunji Mori
Hitoshi Ogasawara
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 JP10116280A priority Critical patent/JPS5727197A/en
Publication of JPS5727197A publication Critical patent/JPS5727197A/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 a suitable condition in an aeration tank, by estimating the density of organic matter from the density of gaseous carbon dioxide or nitrous suboxied contained in the exhaust gas from the aerating tank, and controlling air supply amount or returning sludge amount in accordance with the deviation between the estimated value and a setting value.
CONSTITUTION: The density of gaseous carbon dioxide or nitrogen suboxide contained in the exhaust gas is measured with an infrared analyzer 82 installed in an aeration tank 3. At the same time, amouht of the aerating air and density of the sludge are measured with an air flow meter 90c and a sludge density meter 85, respectively. Then, based on the above mentioned measured values, density of organic matters in the aeration tank 3 is indirectly estimated by an arithmetic unit 83. Then, the air supply amount and the sludge density are controlled by a controlling device 84 so as to reduce the density to a prescribed range.
COPYRIGHT: (C)1982,JPO&Japio
JP10116280A 1980-07-25 1980-07-25 Method for controlling aeration tank in active sludge water treatment process Pending JPS5727197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10116280A JPS5727197A (en) 1980-07-25 1980-07-25 Method for controlling aeration tank in active sludge water treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10116280A JPS5727197A (en) 1980-07-25 1980-07-25 Method for controlling aeration tank in active sludge water treatment process

Publications (1)

Publication Number Publication Date
JPS5727197A true JPS5727197A (en) 1982-02-13

Family

ID=14293339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10116280A Pending JPS5727197A (en) 1980-07-25 1980-07-25 Method for controlling aeration tank in active sludge water treatment process

Country Status (1)

Country Link
JP (1) JPS5727197A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010099560A (en) * 2008-10-22 2010-05-06 Metawater Co Ltd Air supply system and air supply method
JP2011110501A (en) * 2009-11-27 2011-06-09 Hitachi Ltd Water treatment equipment
JP2011147858A (en) * 2010-01-20 2011-08-04 Hitachi Ltd Apparatus and method for treating sewage
JP2011245359A (en) * 2010-05-24 2011-12-08 Hitachi Ltd Sewage treatment apparatus
JP2012110807A (en) * 2010-11-22 2012-06-14 Metawater Co Ltd Sewage treatment system
JP2012245422A (en) * 2011-05-25 2012-12-13 Hitachi Ltd Water treatment process control device
JP2013215680A (en) * 2012-04-09 2013-10-24 Nissin Electric Co Ltd Wastewater treatment method and wastewater treatment apparatus
US10386019B2 (en) 2013-03-15 2019-08-20 Southwire Company, Llc Flow control and gas metering process
WO2023243236A1 (en) * 2022-06-14 2023-12-21 オルガノ株式会社 Wastewater treatment method and wastewater treatment apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010099560A (en) * 2008-10-22 2010-05-06 Metawater Co Ltd Air supply system and air supply method
JP2011110501A (en) * 2009-11-27 2011-06-09 Hitachi Ltd Water treatment equipment
JP2011147858A (en) * 2010-01-20 2011-08-04 Hitachi Ltd Apparatus and method for treating sewage
JP2011245359A (en) * 2010-05-24 2011-12-08 Hitachi Ltd Sewage treatment apparatus
JP2012110807A (en) * 2010-11-22 2012-06-14 Metawater Co Ltd Sewage treatment system
JP2012245422A (en) * 2011-05-25 2012-12-13 Hitachi Ltd Water treatment process control device
JP2013215680A (en) * 2012-04-09 2013-10-24 Nissin Electric Co Ltd Wastewater treatment method and wastewater treatment apparatus
US10386019B2 (en) 2013-03-15 2019-08-20 Southwire Company, Llc Flow control and gas metering process
US10969060B2 (en) 2013-03-15 2021-04-06 Southwire Company, Llc Flow control and gas metering process
WO2023243236A1 (en) * 2022-06-14 2023-12-21 オルガノ株式会社 Wastewater treatment method and wastewater treatment apparatus

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