JPS5447356A - Method of condensing sewerage sludge - Google Patents

Method of condensing sewerage sludge

Info

Publication number
JPS5447356A
JPS5447356A JP11293477A JP11293477A JPS5447356A JP S5447356 A JPS5447356 A JP S5447356A JP 11293477 A JP11293477 A JP 11293477A JP 11293477 A JP11293477 A JP 11293477A JP S5447356 A JPS5447356 A JP S5447356A
Authority
JP
Japan
Prior art keywords
water
tank
sewerage
sludge
pressurizing
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
JP11293477A
Other languages
Japanese (ja)
Other versions
JPS5913280B2 (en
Inventor
Masataka Saga
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.)
Ebara Corp
Original Assignee
Ebara Infilco 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 Ebara Infilco Co Ltd filed Critical Ebara Infilco Co Ltd
Priority to JP52112934A priority Critical patent/JPS5913280B2/en
Publication of JPS5447356A publication Critical patent/JPS5447356A/en
Publication of JPS5913280B2 publication Critical patent/JPS5913280B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Physical Water Treatments (AREA)
  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To provide a method capable of condensing sewerage sludge to a high density with ease; by adding mineral oil emulsified by cationic emulsifier to sewerage sludege, stirring up vigorously to mix them uniformly, and subjecting the same to the treatment of floatation.
CONSTITUTION: Water from tank 1 (or treated water 11) is introduced into pressurizing tank 3 while pressurizing the same to 3W6 atm by means of pressurizing pump 2, and air 5 is supplied to the tank 3 by means of compressor 4 and dissolved in water. Pressurized water 6 in which air is dissolved is introducd into floatation tank 8 via ejector 7. Here, when water 6 passes the ejector 7, mixture 9 of sewerage sludge 13 and mineral oil 12 pre-emulsified by cationic emulsifier is drawn into water 6, and at the same time, fine bubbles produced by reason of pressure reduction are attached to solid matters of sludge, whereby it is separated into treated water 11 and highly condensed froth 10 in floatation tank 8
COPYRIGHT: (C)1979,JPO&Japio
JP52112934A 1977-09-20 1977-09-20 Method for thickening sewage sludge Expired JPS5913280B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52112934A JPS5913280B2 (en) 1977-09-20 1977-09-20 Method for thickening sewage sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52112934A JPS5913280B2 (en) 1977-09-20 1977-09-20 Method for thickening sewage sludge

Publications (2)

Publication Number Publication Date
JPS5447356A true JPS5447356A (en) 1979-04-13
JPS5913280B2 JPS5913280B2 (en) 1984-03-28

Family

ID=14599140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52112934A Expired JPS5913280B2 (en) 1977-09-20 1977-09-20 Method for thickening sewage sludge

Country Status (1)

Country Link
JP (1) JPS5913280B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008173572A (en) * 2007-01-19 2008-07-31 Nishimatsu Constr Co Ltd Turbid water treatment method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008173572A (en) * 2007-01-19 2008-07-31 Nishimatsu Constr Co Ltd Turbid water treatment method

Also Published As

Publication number Publication date
JPS5913280B2 (en) 1984-03-28

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