JPS56115700A - Dehydration of anaerobically digesting sludge - Google Patents

Dehydration of anaerobically digesting sludge

Info

Publication number
JPS56115700A
JPS56115700A JP1943880A JP1943880A JPS56115700A JP S56115700 A JPS56115700 A JP S56115700A JP 1943880 A JP1943880 A JP 1943880A JP 1943880 A JP1943880 A JP 1943880A JP S56115700 A JPS56115700 A JP S56115700A
Authority
JP
Japan
Prior art keywords
sludge
freeze
thawing
dehydration
dehydrating
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
JP1943880A
Other languages
Japanese (ja)
Inventor
Kenjiyu Ozawa
Kenichiro Yamanishi
Kazuo Hasegawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1943880A priority Critical patent/JPS56115700A/en
Publication of JPS56115700A publication Critical patent/JPS56115700A/en
Pending legal-status Critical Current

Links

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To eliminate the need for acid resistance of a freeze-thawing tank by controlling the pH of sludge to specific values after freeze-thawing the same then dehydrating this sludge.
CONSTITUTION: Titled sludge is first subjected to freeze-thawing in a freeze-thawing tank 3, whereby a part of which is improved of dehydrating characteristic, after which it is sent into a pH control part 1. Here, it is mixed with an acid supplied from a hydrogen ion supplying device 2, and its pH is controlled to 2W4, after which the sludge is sent into a dehydrator 4 and is dehydrated.
COPYRIGHT: (C)1981,JPO&Japio
JP1943880A 1980-02-19 1980-02-19 Dehydration of anaerobically digesting sludge Pending JPS56115700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1943880A JPS56115700A (en) 1980-02-19 1980-02-19 Dehydration of anaerobically digesting sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1943880A JPS56115700A (en) 1980-02-19 1980-02-19 Dehydration of anaerobically digesting sludge

Publications (1)

Publication Number Publication Date
JPS56115700A true JPS56115700A (en) 1981-09-10

Family

ID=11999289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1943880A Pending JPS56115700A (en) 1980-02-19 1980-02-19 Dehydration of anaerobically digesting sludge

Country Status (1)

Country Link
JP (1) JPS56115700A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018352A (en) * 1973-06-21 1975-02-26
JPS5396263A (en) * 1977-02-01 1978-08-23 Mitsubishi Electric Corp Sludge treating apparatus
JPS5484871A (en) * 1977-12-19 1979-07-06 Mitsubishi Electric Corp Treatment of sludge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018352A (en) * 1973-06-21 1975-02-26
JPS5396263A (en) * 1977-02-01 1978-08-23 Mitsubishi Electric Corp Sludge treating apparatus
JPS5484871A (en) * 1977-12-19 1979-07-06 Mitsubishi Electric Corp Treatment of sludge

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