JPS55152594A - Waste water treatment using method of sectional recovery of active sludge - Google Patents

Waste water treatment using method of sectional recovery of active sludge

Info

Publication number
JPS55152594A
JPS55152594A JP5975779A JP5975779A JPS55152594A JP S55152594 A JPS55152594 A JP S55152594A JP 5975779 A JP5975779 A JP 5975779A JP 5975779 A JP5975779 A JP 5975779A JP S55152594 A JPS55152594 A JP S55152594A
Authority
JP
Japan
Prior art keywords
aeration
amount
tank
active sludge
oxygen
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
JP5975779A
Other languages
Japanese (ja)
Other versions
JPS5950398B2 (en
Inventor
Shozo Harada
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 Plant Technologies Ltd
Original Assignee
Hitachi Plant Technologies 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 Technologies Ltd filed Critical Hitachi Plant Technologies Ltd
Priority to JP54059757A priority Critical patent/JPS5950398B2/en
Publication of JPS55152594A publication Critical patent/JPS55152594A/en
Publication of JPS5950398B2 publication Critical patent/JPS5950398B2/en
Expired 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 obtain good-quality treated water under a small aeration ratio condition by a method wherein the quantity of aeration to a closed type aeration tank and the tank internal pressure are controlled to correspond to the change in speed of oxygen take-in of active sludge which changes with time.
CONSTITUTION: During the treatment period of waste water, the amount of aeration to aeration tank and the taank internal pressure are controlled. The control is made by pressure control and exhaustion valves attached to the tank, so that the change is made, in increase and decrease, to follow each hystogram. This effects in reducing an aeration factor and increasing an oxygen absorption efficiency. The rate of oxygen absorption from liquid to be treated at a specified BOD load is measued, for example, according to the sewage test method. The measurement value change with time is used to control the amount to aeration to the aeration tank and to find the time to make its switching. A small scale recovery treatment is made by using a small amount of liquid being treated, and the result is used to convert the oxygen absorption speed of active sludge to the speed of oxygen movement in a clean water at 20°C. The result is further converted to the amount of draft to obtain an approximate aeration amount.
COPYRIGHT: (C)1980,JPO&Japio
JP54059757A 1979-05-17 1979-05-17 Wastewater treatment method using batch activated sludge method Expired JPS5950398B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54059757A JPS5950398B2 (en) 1979-05-17 1979-05-17 Wastewater treatment method using batch activated sludge method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54059757A JPS5950398B2 (en) 1979-05-17 1979-05-17 Wastewater treatment method using batch activated sludge method

Publications (2)

Publication Number Publication Date
JPS55152594A true JPS55152594A (en) 1980-11-27
JPS5950398B2 JPS5950398B2 (en) 1984-12-07

Family

ID=13122444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54059757A Expired JPS5950398B2 (en) 1979-05-17 1979-05-17 Wastewater treatment method using batch activated sludge method

Country Status (1)

Country Link
JP (1) JPS5950398B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406023A (en) * 1992-02-25 1995-04-11 Yamaha Corporation Electronic musical instrument using simplified registration selection
CN100348303C (en) * 2006-04-19 2007-11-14 天津天大天环科技有限公司 Energy-saving integrated type membrane bioreactor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406023A (en) * 1992-02-25 1995-04-11 Yamaha Corporation Electronic musical instrument using simplified registration selection
CN100348303C (en) * 2006-04-19 2007-11-14 天津天大天环科技有限公司 Energy-saving integrated type membrane bioreactor

Also Published As

Publication number Publication date
JPS5950398B2 (en) 1984-12-07

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