JPS5556893A - Controlling method for total outgoing sludge of aeration tank in activated sludge method - Google Patents

Controlling method for total outgoing sludge of aeration tank in activated sludge method

Info

Publication number
JPS5556893A
JPS5556893A JP13051978A JP13051978A JPS5556893A JP S5556893 A JPS5556893 A JP S5556893A JP 13051978 A JP13051978 A JP 13051978A JP 13051978 A JP13051978 A JP 13051978A JP S5556893 A JPS5556893 A JP S5556893A
Authority
JP
Japan
Prior art keywords
sludge
aeration tank
amount
aeration
detection terminals
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.)
Granted
Application number
JP13051978A
Other languages
Japanese (ja)
Other versions
JPS5725276B2 (en
Inventor
Nobutsugu Kato
Takuji Nakazato
Masami Koide
Makoto Shiotani
Atsuko Shiraishi
Shiyouichi Masui
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 JP13051978A priority Critical patent/JPS5556893A/en
Publication of JPS5556893A publication Critical patent/JPS5556893A/en
Publication of JPS5725276B2 publication Critical patent/JPS5725276B2/ja
Granted 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 make the calculation of the balance of water flow rate and sludge amount by information from the minimum detection terminals by such an operation that the amount of drawn excess sludge from a sewage treatment process using activated sludge method becomes equal approximately to the multiplicated amount of sludge in the process.
CONSTITUTION: In an activated sludge method-using sewage treatment process, having plural aeration tanks and more than one final sedimentation basins, in case where the concentration of flocs and flow rate at the outlet of aeration tank are not measured for all the aeration tanks, the total amount of sludge coming out of aeration tank is estimated with high accuracy by using information from the minimum detection termianls. The requisitely minimum detection terminals are determined by a sludge balance equation for process in such a way that unknown variable becomes one mutually. In the equation, K is unknown variable and QW, SR, Q, MLSS, QR, Q, etc. are known variables, or detection terminals. Thus, the estimation and control of the amount and interface height of sludge in final sedimentation basin and also the flocs concentration in the mixed liquid of aeration tank can be performed with high accuracy by utilizing the total amount of sludge coming out of aeration tank or by controlling it by the aforesaid method.
COPYRIGHT: (C)1980,JPO&Japio
JP13051978A 1978-10-25 1978-10-25 Controlling method for total outgoing sludge of aeration tank in activated sludge method Granted JPS5556893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13051978A JPS5556893A (en) 1978-10-25 1978-10-25 Controlling method for total outgoing sludge of aeration tank in activated sludge method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13051978A JPS5556893A (en) 1978-10-25 1978-10-25 Controlling method for total outgoing sludge of aeration tank in activated sludge method

Publications (2)

Publication Number Publication Date
JPS5556893A true JPS5556893A (en) 1980-04-26
JPS5725276B2 JPS5725276B2 (en) 1982-05-28

Family

ID=15036225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13051978A Granted JPS5556893A (en) 1978-10-25 1978-10-25 Controlling method for total outgoing sludge of aeration tank in activated sludge method

Country Status (1)

Country Link
JP (1) JPS5556893A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5781886A (en) * 1980-11-10 1982-05-22 Hitachi Ltd Control device for sewage treating device
JPS58156395A (en) * 1982-03-15 1983-09-17 Toshiba Corp Means for controlling amount of sludge in sewage disposal plant
JPS58219995A (en) * 1982-06-14 1983-12-21 Toshiba Corp Method and apparatus for controlling amount of activated sludge
JPS58223488A (en) * 1982-06-18 1983-12-26 Toshiba Corp Control method for distribution of flow rate in aeration tank
JPS5955392A (en) * 1982-09-22 1984-03-30 Toshiba Corp Adjustment device for sludge water

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514260A (en) * 1974-07-01 1976-01-14 Suwa Seikosha Kk PURASUCHITSUKURENZUCHUZOYO IGATA OYOBI GASUKETSUTO
JPS5141260A (en) * 1974-10-04 1976-04-07 Hitachi Ltd
JPS5196171A (en) * 1975-02-21 1976-08-23

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514260A (en) * 1974-07-01 1976-01-14 Suwa Seikosha Kk PURASUCHITSUKURENZUCHUZOYO IGATA OYOBI GASUKETSUTO
JPS5141260A (en) * 1974-10-04 1976-04-07 Hitachi Ltd
JPS5196171A (en) * 1975-02-21 1976-08-23

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5781886A (en) * 1980-11-10 1982-05-22 Hitachi Ltd Control device for sewage treating device
JPS58156395A (en) * 1982-03-15 1983-09-17 Toshiba Corp Means for controlling amount of sludge in sewage disposal plant
JPS58219995A (en) * 1982-06-14 1983-12-21 Toshiba Corp Method and apparatus for controlling amount of activated sludge
JPS58223488A (en) * 1982-06-18 1983-12-26 Toshiba Corp Control method for distribution of flow rate in aeration tank
JPH0256960B2 (en) * 1982-06-18 1990-12-03 Tokyo Shibaura Electric Co
JPS5955392A (en) * 1982-09-22 1984-03-30 Toshiba Corp Adjustment device for sludge water

Also Published As

Publication number Publication date
JPS5725276B2 (en) 1982-05-28

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