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JPS57130600A - Dehydration of sludge - Google Patents

Dehydration of sludge

Info

Publication number
JPS57130600A
JPS57130600A JP56016296A JP1629681A JPS57130600A JP S57130600 A JPS57130600 A JP S57130600A JP 56016296 A JP56016296 A JP 56016296A JP 1629681 A JP1629681 A JP 1629681A JP S57130600 A JPS57130600 A JP S57130600A
Authority
JP
Japan
Prior art keywords
high molecular
sludge
coagulant
mixing
added
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
JP56016296A
Other languages
Japanese (ja)
Inventor
Masanori Hashimoto
Yasuhiko Ishii
Yasuhiro Oi
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 JP56016296A priority Critical patent/JPS57130600A/en
Priority to US06/287,453 priority patent/US4382864A/en
Priority to GB8124156A priority patent/GB2082163B/en
Priority to DE19813131411 priority patent/DE3131411A1/en
Publication of JPS57130600A publication Critical patent/JPS57130600A/en
Pending legal-status Critical Current

Links

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To carry out dehydration of sludge in good efficiency by a method wherein two kinds of specific high molecular coagulants are added to the sludge and, after stirring and mixing, formed flocks are subjected to press dehydration under pressure of 1kg/cm2 or more by using a filter cloth.
CONSTITUTION: To sludge, a firtst high molecular coagulant having electric charge reverse to that of the sludge is added and, after stirring and mixing, a second high molecular coagulant having electric charge reverse to that of the first high molecular coagulant is added to carry out stirring and mixing. After this treatment, formed flocks are subjected to press dehydration under pressure of 1kg/cm2 or more by using a filter cloth. Among the first and the second coagulants, as at least one coagulant, a natural high molecular coagulant or a derivative thereof is pref. used. As the natural high molecular coagulant or the derivative thereof, there is carboxy methyl cellulose or the like in an anionic one and there is cationic starch or the like in a cationic one.
COPYRIGHT: (C)1982,JPO&Japio
JP56016296A 1980-08-08 1981-02-07 Dehydration of sludge Pending JPS57130600A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56016296A JPS57130600A (en) 1981-02-07 1981-02-07 Dehydration of sludge
US06/287,453 US4382864A (en) 1980-08-08 1981-07-27 Process for dewatering sludges
GB8124156A GB2082163B (en) 1980-08-08 1981-08-07 Dewatering sludges
DE19813131411 DE3131411A1 (en) 1980-08-08 1981-08-07 METHOD FOR DRAINING SLUDGE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56016296A JPS57130600A (en) 1981-02-07 1981-02-07 Dehydration of sludge

Publications (1)

Publication Number Publication Date
JPS57130600A true JPS57130600A (en) 1982-08-13

Family

ID=11912577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56016296A Pending JPS57130600A (en) 1980-08-08 1981-02-07 Dehydration of sludge

Country Status (1)

Country Link
JP (1) JPS57130600A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870899A (en) * 1981-10-23 1983-04-27 Ebara Infilco Co Ltd Dehydration of organic sludge
JPS59183808A (en) * 1983-03-31 1984-10-19 Kurita Water Ind Ltd Dewatering of sludge
JPS6125700A (en) * 1984-07-13 1986-02-04 Ebara Infilco Co Ltd Dehydrating method of organic sludge
JP2000190000A (en) * 1998-12-25 2000-07-11 Terunaito:Kk Treatment method for highly wet dredged bottom mud
JP2000189999A (en) * 1998-12-25 2000-07-11 Terunaito:Kk Volume reduction method for dredged mud with high water content
CN102092829A (en) * 2010-12-31 2011-06-15 大连理工大学 Process for producing bioflocculants from surplus sludge
WO2015108762A1 (en) * 2014-01-14 2015-07-23 Buckman Laboratories International, Inc. Use of celluloses in sludge dewatering, and sludge products thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870899A (en) * 1981-10-23 1983-04-27 Ebara Infilco Co Ltd Dehydration of organic sludge
JPS59183808A (en) * 1983-03-31 1984-10-19 Kurita Water Ind Ltd Dewatering of sludge
JPS6125700A (en) * 1984-07-13 1986-02-04 Ebara Infilco Co Ltd Dehydrating method of organic sludge
JP2000190000A (en) * 1998-12-25 2000-07-11 Terunaito:Kk Treatment method for highly wet dredged bottom mud
JP2000189999A (en) * 1998-12-25 2000-07-11 Terunaito:Kk Volume reduction method for dredged mud with high water content
CN102092829A (en) * 2010-12-31 2011-06-15 大连理工大学 Process for producing bioflocculants from surplus sludge
WO2015108762A1 (en) * 2014-01-14 2015-07-23 Buckman Laboratories International, Inc. Use of celluloses in sludge dewatering, and sludge products thereof
US9776900B2 (en) 2014-01-14 2017-10-03 Buckman Laboratories International, Inc. Use of celluloses in sludge dewatering, and sludge products thereof

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