JPS5765387A - Biological filtration - Google Patents

Biological filtration

Info

Publication number
JPS5765387A
JPS5765387A JP55140339A JP14033980A JPS5765387A JP S5765387 A JPS5765387 A JP S5765387A JP 55140339 A JP55140339 A JP 55140339A JP 14033980 A JP14033980 A JP 14033980A JP S5765387 A JPS5765387 A JP S5765387A
Authority
JP
Japan
Prior art keywords
packed layer
gas
water
treated water
line
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
JP55140339A
Other languages
Japanese (ja)
Other versions
JPS625029B2 (en
Inventor
Yasuo Horii
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP55140339A priority Critical patent/JPS5765387A/en
Publication of JPS5765387A publication Critical patent/JPS5765387A/en
Publication of JPS625029B2 publication Critical patent/JPS625029B2/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

Landscapes

  • Biological Treatment Of Waste Water (AREA)

Abstract

PURPOSE: To effectively perform biological filtration, when sewage, night soil or the like is purified in an active sludge process, by cleaning the packed layer of active sludge-adhering carriers in a biological filter with bubbling gas and purified water after biologically treated.
CONSTITUTION: Raw water such as sewage or night soil is biologically treated. The treated water, while its dissolved oxygen rate is raised by air from the first gas-flow line 13 in a biological filter 7, is carried through a feed line 11, a packed layer 14 and a discharge ine 15, to catch contained turbid matters with the packed layer 14. Thus, the raw water is continuously biologially filtered. When the packed layer 14 is washed,bubbling is done by injection of air from the second gas-flow line 17, a switch valve 5 is opened to feed treated water, an excess part of active sludge and turbid matters adherent onto carriers in the packed layer 14 are removed from the carriers, and then the treated water is returned through a return line 16 into a conditioning vessel. After washing is completed, a gas-flow line 13 and a circulating line 20 are opened,and the residual treated water is circulated into the packed layer 14 after washed and subjected to biological filtration. Thereafter, the operation is turned into an ordinary continous biological filtration process.
COPYRIGHT: (C)1982,JPO&Japio
JP55140339A 1980-10-06 1980-10-06 Biological filtration Granted JPS5765387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55140339A JPS5765387A (en) 1980-10-06 1980-10-06 Biological filtration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140339A JPS5765387A (en) 1980-10-06 1980-10-06 Biological filtration

Publications (2)

Publication Number Publication Date
JPS5765387A true JPS5765387A (en) 1982-04-20
JPS625029B2 JPS625029B2 (en) 1987-02-03

Family

ID=15266523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140339A Granted JPS5765387A (en) 1980-10-06 1980-10-06 Biological filtration

Country Status (1)

Country Link
JP (1) JPS5765387A (en)

Also Published As

Publication number Publication date
JPS625029B2 (en) 1987-02-03

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