JPS54149978A - Scum foam eliminating method - Google Patents

Scum foam eliminating method

Info

Publication number
JPS54149978A
JPS54149978A JP5859478A JP5859478A JPS54149978A JP S54149978 A JPS54149978 A JP S54149978A JP 5859478 A JP5859478 A JP 5859478A JP 5859478 A JP5859478 A JP 5859478A JP S54149978 A JPS54149978 A JP S54149978A
Authority
JP
Japan
Prior art keywords
scum
air
scums
strength
vacuum pump
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
JP5859478A
Other languages
Japanese (ja)
Inventor
Kenji Taguchi
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP5859478A priority Critical patent/JPS54149978A/en
Publication of JPS54149978A publication Critical patent/JPS54149978A/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

  • Degasification And Air Bubble Elimination (AREA)
  • Activated Sludge Processes (AREA)

Abstract

PURPOSE: To provide an automatic and effective scum eliminating method for blend fluid that flows from aeration tank to settling basin by shrinkaging and destroying scums having larger foam strength after expanding and exploding weak scums.
CONSTITUTION: Scum that is developed in the aeration tank3 stays on the blend fluid surface in a scum chamber 11 flowing through an upper stream submerged weir 5 a. When the fluid surface is covered with scums, control timer sends a singal to close air valve 9 and activate vacuum pump 7 that drains air in air reservoir out of scum chamber through exhaust tube 8. This causes lower external scum pressure than scum inside pressure to expand and explode scums having smaller air foam strength. Then vacuum pump 7 is brought to stop and air valve 9 is opened, which causes an abrupt flow of air into air reservoir 12 through air tube 10. Thus increased scum external pressure immediately compresses and destroyes expanded scums having larger scum strength.
COPYRIGHT: (C)1979,JPO&Japio
JP5859478A 1978-05-17 1978-05-17 Scum foam eliminating method Pending JPS54149978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5859478A JPS54149978A (en) 1978-05-17 1978-05-17 Scum foam eliminating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5859478A JPS54149978A (en) 1978-05-17 1978-05-17 Scum foam eliminating method

Publications (1)

Publication Number Publication Date
JPS54149978A true JPS54149978A (en) 1979-11-24

Family

ID=13088807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5859478A Pending JPS54149978A (en) 1978-05-17 1978-05-17 Scum foam eliminating method

Country Status (1)

Country Link
JP (1) JPS54149978A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107253770A (en) * 2017-08-22 2017-10-17 彭从文 Self-defoaming type sewage aeration pond

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107253770A (en) * 2017-08-22 2017-10-17 彭从文 Self-defoaming type sewage aeration pond

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