JPS57156090A - Activated sludge treatment - Google Patents

Activated sludge treatment

Info

Publication number
JPS57156090A
JPS57156090A JP56042157A JP4215781A JPS57156090A JP S57156090 A JPS57156090 A JP S57156090A JP 56042157 A JP56042157 A JP 56042157A JP 4215781 A JP4215781 A JP 4215781A JP S57156090 A JPS57156090 A JP S57156090A
Authority
JP
Japan
Prior art keywords
sludge
mixed
tank
contact
return
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
JP56042157A
Other languages
Japanese (ja)
Inventor
Akira Nishigawara
Original Assignee
Akira Nishigawara
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 Akira Nishigawara filed Critical Akira Nishigawara
Priority to JP56042157A priority Critical patent/JPS57156090A/en
Publication of JPS57156090A publication Critical patent/JPS57156090A/en
Granted legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

PURPOSE: To improve the settling characteristic of sludge by mixing contact liquid such as industrial waste water or the like with the primary contact mixed sludge or the like contacted and mixed with part of the sludge treated and mixed in an aeration tank and/or part of return sludge and flocculating these.
CONSTITUTION: Raw water 6 is supplied to an aeration 1 where it is sujected to a biological treatment. The sludge 8 treated and mixed in the aeration tank is transferred to a solid-liquid separating tank 2. Part 4 of the settled return sludge and contact liquid 7 are supplied in a contact tank 12, where these are contacted and mixed. In some cases, the contact liquid may be mixed with part of the return sludge before it is put into the tank 12. The primary contact mixed sludge 10 mixed with the sludge 8 flowing out from the aeration tank, and the mixed secondary contact mixed sludge 11 is supplied to a solid-liquid separating tank 2. Thence, supernatant 9 is released, and the sludge settled in the tank 2 is returned with a return pump 3 to return the greater part of the return sludge 4 into the tank 1 and part thereof into the tank 12.
COPYRIGHT: (C)1982,JPO&Japio
JP56042157A 1981-03-22 1981-03-22 Activated sludge treatment Granted JPS57156090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56042157A JPS57156090A (en) 1981-03-22 1981-03-22 Activated sludge treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56042157A JPS57156090A (en) 1981-03-22 1981-03-22 Activated sludge treatment

Publications (1)

Publication Number Publication Date
JPS57156090A true JPS57156090A (en) 1982-09-27

Family

ID=12628106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56042157A Granted JPS57156090A (en) 1981-03-22 1981-03-22 Activated sludge treatment

Country Status (1)

Country Link
JP (1) JPS57156090A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1342698A1 (en) * 2002-03-05 2003-09-10 Norbert Univ. Prof. Dipl.-Ing. Dr. Matsché Proccess and installation for the biological treatment of industrial wastewaters
KR100704698B1 (en) * 2003-12-04 2007-04-20 세이코 엡슨 가부시키가이샤 Gear pump and liquid jetting device
JP2008075586A (en) * 2006-09-22 2008-04-03 Nabtesco Corp Vane vacuum pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1342698A1 (en) * 2002-03-05 2003-09-10 Norbert Univ. Prof. Dipl.-Ing. Dr. Matsché Proccess and installation for the biological treatment of industrial wastewaters
KR100704698B1 (en) * 2003-12-04 2007-04-20 세이코 엡슨 가부시키가이샤 Gear pump and liquid jetting device
JP2008075586A (en) * 2006-09-22 2008-04-03 Nabtesco Corp Vane vacuum pump

Similar Documents

Publication Publication Date Title
JPS57171495A (en) Removal of phosphorus from organic waste liquid
JPS57156090A (en) Activated sludge treatment
JPS58128195A (en) Septic tank of hardly disposable sewage of night soil
JPH0466200A (en) Treatment of waste water and sludge
JPS5413665A (en) Process for treating organic waste water
JPH0330897A (en) Waste water treatment apparatus
JPS63242397A (en) Treatment of waste water
JPS6048189A (en) Treatment of waste water
JPS61278309A (en) Purification of water
JPS56155693A (en) Treatment of dense organic waste liquid
JPS5889990A (en) Biological treatment for waste water
JPS57119899A (en) Treatment of organic waste liquid
JPS5955391A (en) Treatment of activated sludge
JPS5919598A (en) Treatment of organic liquid waste
JPS6054784A (en) Treatment of organic waste water containing fluorine
JPS56126499A (en) Treatment of sludge in night soil purifying tank
JPS59154197A (en) Biological denitrification method of organic waste
JPS6323796A (en) Treatment of waste water
JPH04313397A (en) Method for dephosphorizing organic waste water
Asendorf A new method for treatment of combined industrial and domestic waste waters
JPS5939391A (en) Treatment of organic waste water with activated sludge
JPS5522303A (en) Activated sludge treatment
JPS5771700A (en) Method for treatment of organic waste water
JPH02238210A (en) Disposal method for sand separated from human waste and septic-tank sludge
JPH04277084A (en) Water treatment apparatus