JPS5594699A - Method of dehydrating sludge - Google Patents

Method of dehydrating sludge

Info

Publication number
JPS5594699A
JPS5594699A JP355279A JP355279A JPS5594699A JP S5594699 A JPS5594699 A JP S5594699A JP 355279 A JP355279 A JP 355279A JP 355279 A JP355279 A JP 355279A JP S5594699 A JPS5594699 A JP S5594699A
Authority
JP
Japan
Prior art keywords
sludge
freeze
molten
excess
mixture
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
JP355279A
Other languages
Japanese (ja)
Inventor
Hideki Haji
Shinya Tamagawa
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 JP355279A priority Critical patent/JPS5594699A/en
Publication of JPS5594699A publication Critical patent/JPS5594699A/en
Pending legal-status Critical Current

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To dispense with the use of slaked lime and dispose of excess sludge and freeze-molten sludge simultaneously, by adding the freeze-molten sludge to the excess sludge or mixture thereof in dehydrating the excess sludge or mixture.
CONSTITUTION: Freeze-molten sludge is added to excess sludge or mixture thereof, which is produced in treating organic waste water such as sewage with activated sludge. The weight ratio of the freeze-molten sludge to the suspended solid content of treated sludge is at least 0.5. Sludge, which is prepared by adding a coagulant such as ferric chloride or aluminium sulfate to sludge of hydroxide of metal such as aluminium or excess sludge and freezing and melting the coagulant-mixed sludge by a conventional method, can be used as said freeze-molten sludge.
COPYRIGHT: (C)1980,JPO&Japio
JP355279A 1979-01-16 1979-01-16 Method of dehydrating sludge Pending JPS5594699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP355279A JPS5594699A (en) 1979-01-16 1979-01-16 Method of dehydrating sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP355279A JPS5594699A (en) 1979-01-16 1979-01-16 Method of dehydrating sludge

Publications (1)

Publication Number Publication Date
JPS5594699A true JPS5594699A (en) 1980-07-18

Family

ID=11560578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP355279A Pending JPS5594699A (en) 1979-01-16 1979-01-16 Method of dehydrating sludge

Country Status (1)

Country Link
JP (1) JPS5594699A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56141899A (en) * 1980-04-04 1981-11-05 Japan Organo Co Ltd Treatment of sludge without chemical injection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56141899A (en) * 1980-04-04 1981-11-05 Japan Organo Co Ltd Treatment of sludge without chemical injection

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