JPS5851997A - Method of dehydrating sludge - Google Patents

Method of dehydrating sludge

Info

Publication number
JPS5851997A
JPS5851997A JP56147962A JP14796281A JPS5851997A JP S5851997 A JPS5851997 A JP S5851997A JP 56147962 A JP56147962 A JP 56147962A JP 14796281 A JP14796281 A JP 14796281A JP S5851997 A JPS5851997 A JP S5851997A
Authority
JP
Japan
Prior art keywords
multivalent metal
organic
metal compound
sodium alginate
dehydrator
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
JP56147962A
Other languages
Japanese (ja)
Inventor
Shoichi Goda
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 JP56147962A priority Critical patent/JPS5851997A/en
Publication of JPS5851997A publication Critical patent/JPS5851997A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain cake having a low water-retaining ratio with simplified operation, by adding a multivalent metal compound and sodium alginate to organic sludge formed from industrial waste water or the like, adding an organic macromolecular flocculant to it and then mechanically dehydrating it.
CONSTITUTION: At first a multivalent metal compound is added to organic sludge formed from sewage, night soil, industrial waste water, etc., and the mixture is sufficiently agitated. Sodium alginate is then added to the mixture being further agitated, to form and coagulate the fibers of the multivalent metal with sodium alginate. Thereafter, fine flocks are changed into rigid ones by the addition of an organic synthetic macromolecular flocculant and dehydrated by a mechanical dehydrator such as a roll press, a pressing dehydrator or a centrifugal dehydrator. Said multivalent metal compound may be poly (ferric sulfate), slaked lime, poly (aluminum chloride), etc., and the organic synthetic macromolecular flocculant may be acryl amide, a copolymer of sodium a crylate, etc.
COPYRIGHT: (C)1983,JPO&Japio
JP56147962A 1981-09-21 1981-09-21 Method of dehydrating sludge Pending JPS5851997A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56147962A JPS5851997A (en) 1981-09-21 1981-09-21 Method of dehydrating sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56147962A JPS5851997A (en) 1981-09-21 1981-09-21 Method of dehydrating sludge

Publications (1)

Publication Number Publication Date
JPS5851997A true JPS5851997A (en) 1983-03-26

Family

ID=15442018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56147962A Pending JPS5851997A (en) 1981-09-21 1981-09-21 Method of dehydrating sludge

Country Status (1)

Country Link
JP (1) JPS5851997A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966713A (en) * 1989-04-13 1990-10-30 Fmc Corporation Process for the treatment of waste water from food processing plants
KR20000024296A (en) * 2000-02-03 2000-05-06 정무웅 emulsion type weist water treatment
CN101863611A (en) * 2010-06-13 2010-10-20 东南大学 Method for deeply dehydrating sludge
CN102627386A (en) * 2012-04-10 2012-08-08 无锡国联环保科技有限公司 Method for adding conditioner for dehydrating sludge
CN108905965A (en) * 2018-07-04 2018-11-30 桂林理工大学 The method that sludge bioleaching-pyrolysis Combined Treatment prepares heavy metal absorbent

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966713A (en) * 1989-04-13 1990-10-30 Fmc Corporation Process for the treatment of waste water from food processing plants
KR20000024296A (en) * 2000-02-03 2000-05-06 정무웅 emulsion type weist water treatment
CN101863611A (en) * 2010-06-13 2010-10-20 东南大学 Method for deeply dehydrating sludge
CN102627386A (en) * 2012-04-10 2012-08-08 无锡国联环保科技有限公司 Method for adding conditioner for dehydrating sludge
CN108905965A (en) * 2018-07-04 2018-11-30 桂林理工大学 The method that sludge bioleaching-pyrolysis Combined Treatment prepares heavy metal absorbent

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