JPS5640500A - Dehydration of activated sludge - Google Patents

Dehydration of activated sludge

Info

Publication number
JPS5640500A
JPS5640500A JP11569779A JP11569779A JPS5640500A JP S5640500 A JPS5640500 A JP S5640500A JP 11569779 A JP11569779 A JP 11569779A JP 11569779 A JP11569779 A JP 11569779A JP S5640500 A JPS5640500 A JP S5640500A
Authority
JP
Japan
Prior art keywords
activated sludge
dehydration
tank
strong acid
acid
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
JP11569779A
Other languages
Japanese (ja)
Inventor
Yasuharu Sekishita
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.)
FUKOKU KOGYO KK
Original Assignee
FUKOKU KOGYO KK
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 FUKOKU KOGYO KK filed Critical FUKOKU KOGYO KK
Priority to JP11569779A priority Critical patent/JPS5640500A/en
Publication of JPS5640500A publication Critical patent/JPS5640500A/en
Pending legal-status Critical Current

Links

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To destroy microorganisms present in the activated sludge to perform preferably dehydration of a mechanical method, by dehydrating the activated sludge using a dehydrator whose pH value has been well lowered by adding strong acid.
CONSTITUTION: The activated sludge 2 in a activated sludge tank 1 is charged into a pH adjusting tank 3, to which the strong acid such as bydrochloric acid or sulfuric acid in a strong acid tank 4 is added. The mixture is stirred to destroy the microorganisms in the activated sludge. Thereafter the mixture is treated by a dehydrator such as a screw press to obtain excellently dehydrated sludge. Thus by a simple pretreatment on the activated sludge, dehydration is improved.
COPYRIGHT: (C)1981,JPO&Japio
JP11569779A 1979-09-11 1979-09-11 Dehydration of activated sludge Pending JPS5640500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11569779A JPS5640500A (en) 1979-09-11 1979-09-11 Dehydration of activated sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11569779A JPS5640500A (en) 1979-09-11 1979-09-11 Dehydration of activated sludge

Publications (1)

Publication Number Publication Date
JPS5640500A true JPS5640500A (en) 1981-04-16

Family

ID=14668989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11569779A Pending JPS5640500A (en) 1979-09-11 1979-09-11 Dehydration of activated sludge

Country Status (1)

Country Link
JP (1) JPS5640500A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594030A (en) * 1982-06-16 1984-01-10 ゼネラル・シグナル・コ−ポレ−シヨン Method and device for slicing semiconductor ingot
JPH0394900A (en) * 1989-09-05 1991-04-19 Ebara Infilco Co Ltd Dehydrating treatment of organic sludge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594030A (en) * 1982-06-16 1984-01-10 ゼネラル・シグナル・コ−ポレ−シヨン Method and device for slicing semiconductor ingot
JPH0394900A (en) * 1989-09-05 1991-04-19 Ebara Infilco Co Ltd Dehydrating treatment of organic sludge

Similar Documents

Publication Publication Date Title
JPS551851A (en) Dehydration of organic sludge
JPS5245582A (en) Solid-liquid separation method of organic waste fluid sludge
FR2327965A1 (en) Dewatering activated sludge from effluent treatment - by acidifying, heating then separating the dehydrated sludge
JPS55155798A (en) Treating method of organic waste water
JPS57117311A (en) Method of dehydrating deposited sludge by filter press
JPS5640500A (en) Dehydration of activated sludge
JPS5781900A (en) Concentrating and dehydrating method for organic sludge
JPS55162400A (en) Sludge dehydrating method by methanol
JPS5660699A (en) Dehydration of sludge
JPS53113161A (en) Dewatering method for sludge
JPS53123558A (en) Sludge dehydration method
JPS5468053A (en) Digestion disposal method of thick organic suspension
JPS54150844A (en) Dehydration of sludge
JPS5710398A (en) Treatment of muddy substance
JPS56115699A (en) Dehydration of sludge of night soil purifying tank
JPS55104694A (en) Treatment of purification tank sludge
JPS5615899A (en) Treatment of organic sludge
JPS54123247A (en) Treatment of raw urine and clarification tank sludge
JPS57197100A (en) Treatment of sewage sludge
JPS52128643A (en) Process for treating organic sludge
JPS5370560A (en) Method of treating waste water
JPS5476482A (en) Dewatering method for organic sludge
GB1044311A (en) A new or improved method of processing oil-containing sewage
JPS52117279A (en) Dehydration of sludge
JPS5730600A (en) Disposal of organic waste liquid