JPS5799396A - Treatment of waste water - Google Patents

Treatment of waste water

Info

Publication number
JPS5799396A
JPS5799396A JP17276080A JP17276080A JPS5799396A JP S5799396 A JPS5799396 A JP S5799396A JP 17276080 A JP17276080 A JP 17276080A JP 17276080 A JP17276080 A JP 17276080A JP S5799396 A JPS5799396 A JP S5799396A
Authority
JP
Japan
Prior art keywords
fed
air
temperature
oxygen concentration
waste water
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
JP17276080A
Other languages
Japanese (ja)
Inventor
Masayuki Kunieda
Shigeru Masumoto
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP17276080A priority Critical patent/JPS5799396A/en
Publication of JPS5799396A publication Critical patent/JPS5799396A/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 obtain high purification efficiency under constantly stable condition, in an active sludge process, by calculating the most proper dissolved-oxygen concentration at a certain temperature on the basis of a measured temperature, and controlling a flow rate of aerating air.
CONSTITUTION: Waste water having flowed through a waste water pipe 1 into a aeration vessel 2 is aerated by air fed from a blower 6 through an air-feed pipe 15, and then fed through an overflow pipe 16 into a precipitating vessel 3. A water thermometer 7 and a DC meter 8 are located inside the aeration vessel 2, and outputs from the meters are fed to a controller 12. In this case, the output from the water thermometer 7 is fed to an operator 11 which calculates an objective dissolved oxygen concentration at the said temperature in accordance with the formula undermentioned, and the calculation result is fed to the controller 12 to control the air-feed rate of the blower 6. The objective dissolved oxygen concentration DOT is obtained by the formula of DOT=K+0.125(30-T) ppm, wherein T is the temperature (°C) of the water in the aeration vessel and K is a constant of 0.2W0.5.
COPYRIGHT: (C)1982,JPO&Japio
JP17276080A 1980-12-08 1980-12-08 Treatment of waste water Pending JPS5799396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17276080A JPS5799396A (en) 1980-12-08 1980-12-08 Treatment of waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17276080A JPS5799396A (en) 1980-12-08 1980-12-08 Treatment of waste water

Publications (1)

Publication Number Publication Date
JPS5799396A true JPS5799396A (en) 1982-06-21

Family

ID=15947817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17276080A Pending JPS5799396A (en) 1980-12-08 1980-12-08 Treatment of waste water

Country Status (1)

Country Link
JP (1) JPS5799396A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879594A (en) * 1981-11-07 1983-05-13 Toshiba Corp Controlling method for concentration of dissolved oxygen in aerating tank in activated sludge treating process
JPS61146397A (en) * 1984-12-19 1986-07-04 Mitsui Petrochem Ind Ltd Method and apparatus for treating night soil
JP2008178792A (en) * 2007-01-24 2008-08-07 Sharp Corp Biological reaction method and biological reaction apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879594A (en) * 1981-11-07 1983-05-13 Toshiba Corp Controlling method for concentration of dissolved oxygen in aerating tank in activated sludge treating process
JPS6351759B2 (en) * 1981-11-07 1988-10-14 Tokyo Shibaura Electric Co
JPS61146397A (en) * 1984-12-19 1986-07-04 Mitsui Petrochem Ind Ltd Method and apparatus for treating night soil
JP2008178792A (en) * 2007-01-24 2008-08-07 Sharp Corp Biological reaction method and biological reaction apparatus

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