JPS5551494A - Sewage treatment - Google Patents

Sewage treatment

Info

Publication number
JPS5551494A
JPS5551494A JP12477378A JP12477378A JPS5551494A JP S5551494 A JPS5551494 A JP S5551494A JP 12477378 A JP12477378 A JP 12477378A JP 12477378 A JP12477378 A JP 12477378A JP S5551494 A JPS5551494 A JP S5551494A
Authority
JP
Japan
Prior art keywords
aeration tank
flow
added
tank
alkylenepolyamine
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
JP12477378A
Other languages
Japanese (ja)
Other versions
JPS5541833B2 (en
Inventor
Hajime Mori
Yoshio Momotsuka
Yoshihiro Noguchi
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.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water 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 Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Priority to JP12477378A priority Critical patent/JPS5551494A/en
Publication of JPS5551494A publication Critical patent/JPS5551494A/en
Publication of JPS5541833B2 publication Critical patent/JPS5541833B2/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

  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Activated Sludge Processes (AREA)

Abstract

PURPOSE: To prevent suspended solids from flowing into treated water when water flow significantly increases, polyethyleneimine or alkylene dihalide-alkylenepolyamine polycondensate is added in the aeration tank or the flow route from the aeration tank to the sedimentation tank.
CONSTITUTION: Into the aeration tank or into the mixed solution flow route from the aeration tank to the sedimentation tank, polyethyleneimine or alkylene dihalide- alkylenepolyamine polycondensate is added in an amount of 5W50ppm (for sewage in residence group). This type of additive has a proper molecular weight of 30000W 600000 and is dense because of cationic property to form flocks which is easy to settle down. As a result, flocks quickly settle down in the final sedimentation basin, and suspended solids (SS) are prevented from being flowed into treated water. If excessively added, flock expansion does not occur to enable stable treatment, thus controlling SS flow in response to the increased rate of water flow.
COPYRIGHT: (C)1980,JPO&Japio
JP12477378A 1978-10-11 1978-10-11 Sewage treatment Granted JPS5551494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12477378A JPS5551494A (en) 1978-10-11 1978-10-11 Sewage treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12477378A JPS5551494A (en) 1978-10-11 1978-10-11 Sewage treatment

Publications (2)

Publication Number Publication Date
JPS5551494A true JPS5551494A (en) 1980-04-15
JPS5541833B2 JPS5541833B2 (en) 1980-10-27

Family

ID=14893748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12477378A Granted JPS5551494A (en) 1978-10-11 1978-10-11 Sewage treatment

Country Status (1)

Country Link
JP (1) JPS5551494A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6068142A (en) * 1983-09-26 1985-04-18 Nippon Steel Corp Transfer method of molten metal by bubbling pump
JPS6156760A (en) * 1984-08-27 1986-03-22 Nippon Kokan Kk <Nkk> Tundish for continuous casting
JPWO2006009125A1 (en) * 2004-07-16 2008-05-01 株式会社クラレ Wastewater treatment method with little excess sludge extraction
WO2019008822A1 (en) * 2017-07-04 2019-01-10 オルガノ株式会社 Water treatment method and water treatment device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57136999U (en) * 1981-02-23 1982-08-26
WO1990009966A1 (en) * 1989-02-23 1990-09-07 Mitsubishi Kasei Polytec Company Treatment of activated sludge
WO1990015030A1 (en) * 1989-06-07 1990-12-13 Mitsubishi Kasei Polytec Company Inhibitor of abnormal phenomena of activated sludge and method of inhibitng abnormal phenomena of activated sludge

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6068142A (en) * 1983-09-26 1985-04-18 Nippon Steel Corp Transfer method of molten metal by bubbling pump
JPS6156760A (en) * 1984-08-27 1986-03-22 Nippon Kokan Kk <Nkk> Tundish for continuous casting
JPWO2006009125A1 (en) * 2004-07-16 2008-05-01 株式会社クラレ Wastewater treatment method with little excess sludge extraction
JP4958551B2 (en) * 2004-07-16 2012-06-20 株式会社クラレ Wastewater treatment method with little excess sludge extraction
WO2019008822A1 (en) * 2017-07-04 2019-01-10 オルガノ株式会社 Water treatment method and water treatment device
JPWO2019008822A1 (en) * 2017-07-04 2019-12-12 オルガノ株式会社 Water treatment method and water treatment apparatus

Also Published As

Publication number Publication date
JPS5541833B2 (en) 1980-10-27

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