JPS55167100A - Freeze dehydrating method and apparatus for activated sludge or the like - Google Patents

Freeze dehydrating method and apparatus for activated sludge or the like

Info

Publication number
JPS55167100A
JPS55167100A JP7563779A JP7563779A JPS55167100A JP S55167100 A JPS55167100 A JP S55167100A JP 7563779 A JP7563779 A JP 7563779A JP 7563779 A JP7563779 A JP 7563779A JP S55167100 A JPS55167100 A JP S55167100A
Authority
JP
Japan
Prior art keywords
sludge
freezing
defrosting
cooled
pressure
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
JP7563779A
Other languages
Japanese (ja)
Inventor
Kazumasa Sugiura
Naomichi Fukushima
Seiji Ooya
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.)
Koike Sanso Kogyo Co Ltd
Koike Sanso Kogyo KK
Original Assignee
Koike Sanso Kogyo Co Ltd
Koike Sanso 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 Koike Sanso Kogyo Co Ltd, Koike Sanso Kogyo KK filed Critical Koike Sanso Kogyo Co Ltd
Priority to JP7563779A priority Critical patent/JPS55167100A/en
Publication of JPS55167100A publication Critical patent/JPS55167100A/en
Pending legal-status Critical Current

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To utilize cold heat during defrosting for freezing effectively and carry out heat exchange at a low temp. efficiently by a method wherein a sludge of a freezing side is cooled by cold heat of a sludge of a defrosting side while the sludge of the defrosting side is added with pressure or a freezing mixture.
CONSTITUTION: A sludge of a freezing side is cooled by cold heat of a defrosting side sludge as well as pressure or a freezing mixture is added to the sludge of the defrosting side to lower the m.p. of the defrostig side sludge lower than that of a freezing side sludge and a solid component and a moisture are separated. For example, a sludge is sent into a primary freezing container 3 from a sludge tank 1 through a preheater 2 to fill an interior of a tube 31 and cooled by exchanging heat between said sludge and a frozen sludge is the defrosting chamber 33 and pressurized by a gear pump 4 to be introduced under pressure into a freezing clamber 33 from a secondary freezing container 5. Subsequently, said sludge is cooled and frozen by a cooling medium in a cooling medium chamber 53 and introduced under pressure into a defrosting chamber 33 from a sludge discharge port 55. The pressure within the defrosting chamber 33 is increased to higher than that within the tube 31 to lower the meeting point of the frozon sludge.
COPYRIGHT: (C)1980,JPO&Japio
JP7563779A 1979-06-18 1979-06-18 Freeze dehydrating method and apparatus for activated sludge or the like Pending JPS55167100A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7563779A JPS55167100A (en) 1979-06-18 1979-06-18 Freeze dehydrating method and apparatus for activated sludge or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7563779A JPS55167100A (en) 1979-06-18 1979-06-18 Freeze dehydrating method and apparatus for activated sludge or the like

Publications (1)

Publication Number Publication Date
JPS55167100A true JPS55167100A (en) 1980-12-26

Family

ID=13581959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7563779A Pending JPS55167100A (en) 1979-06-18 1979-06-18 Freeze dehydrating method and apparatus for activated sludge or the like

Country Status (1)

Country Link
JP (1) JPS55167100A (en)

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