JPS5684700A - Treatment method of purification vessel sludge - Google Patents

Treatment method of purification vessel sludge

Info

Publication number
JPS5684700A
JPS5684700A JP16001479A JP16001479A JPS5684700A JP S5684700 A JPS5684700 A JP S5684700A JP 16001479 A JP16001479 A JP 16001479A JP 16001479 A JP16001479 A JP 16001479A JP S5684700 A JPS5684700 A JP S5684700A
Authority
JP
Japan
Prior art keywords
sludge
flocculating agent
purification vessel
freezing
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
JP16001479A
Other languages
Japanese (ja)
Inventor
Yutaka Kimura
Yutaka Koda
Ryuta Takaoka
Shinichi Imazu
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.)
Daikin Industries Ltd
Original Assignee
Daikin 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP16001479A priority Critical patent/JPS5684700A/en
Publication of JPS5684700A publication Critical patent/JPS5684700A/en
Pending legal-status Critical Current

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To independently treat sludge in a purification vessel without mixing the same with crude night soil by adding a flocculating agent to sludge in the purification vessel then subjecting the sludge to freeze-thaw treatment then filtering and dehydrating this.
CONSTITUTION: Sludge in the purification vessel is transferred into a flocculating vessel, and a flocculating agent is added thereto under stirring. Here, any of organic system, inorganic system and their combinations may be used for the flocculating agent, thence the sludge added with the flocculating agent is frozen. The freezing can be started immediately as far as the sludge is added with the flocculating agent but it is desirable for decreasing the driving power required for freezing to beforehand concentrate the sludge by allowing the solid in the sludge to sediment or float and removing the liquid part prior to the freezing. The sludge having been finished of the freeze-thawing is next subjected to filtration and dehydration processes. Any conventional method is practised for the filtration method.
COPYRIGHT: (C)1981,JPO&Japio
JP16001479A 1979-12-10 1979-12-10 Treatment method of purification vessel sludge Pending JPS5684700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16001479A JPS5684700A (en) 1979-12-10 1979-12-10 Treatment method of purification vessel sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16001479A JPS5684700A (en) 1979-12-10 1979-12-10 Treatment method of purification vessel sludge

Publications (1)

Publication Number Publication Date
JPS5684700A true JPS5684700A (en) 1981-07-10

Family

ID=15706104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16001479A Pending JPS5684700A (en) 1979-12-10 1979-12-10 Treatment method of purification vessel sludge

Country Status (1)

Country Link
JP (1) JPS5684700A (en)

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