JPS55137100A - Treating method of sludge - Google Patents

Treating method of sludge

Info

Publication number
JPS55137100A
JPS55137100A JP4583979A JP4583979A JPS55137100A JP S55137100 A JPS55137100 A JP S55137100A JP 4583979 A JP4583979 A JP 4583979A JP 4583979 A JP4583979 A JP 4583979A JP S55137100 A JPS55137100 A JP S55137100A
Authority
JP
Japan
Prior art keywords
cake
sludge
waste sludge
broken
dehydrated
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
JP4583979A
Other languages
Japanese (ja)
Inventor
Osamu Yashiro
Masabumi Nasu
Yasuhiro Tatara
Manabu Yamashita
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.)
Ishigaki Mechanical Industry Co Ltd
Original Assignee
Ishigaki Mechanical Industry Co 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 Ishigaki Mechanical Industry Co Ltd filed Critical Ishigaki Mechanical Industry Co Ltd
Priority to JP4583979A priority Critical patent/JPS55137100A/en
Publication of JPS55137100A publication Critical patent/JPS55137100A/en
Pending legal-status Critical Current

Links

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To render a sludge weak alkaline without using a neutralizing agent by a method wherein slaked lime is added to a waste sludge after exhaust water treatment and dehydrated by pressure to obtain a cake, thereafter the said cake is broken and treated by passing air until a specific pH value is attained.
CONSTITUTION: The slaked lime is added to waste sludge used in treating city water or sewage and pressurized by a filter press or the like to prepare the dehydrated cake with moisture of below 65%. Subsequently, the said cake is broken to particles with a particle size of below 10mm the pH of the cake is lowered to 8W9 by continuously passing air in an amount of 100W200l/min per ton. By this treatment, if weak alkaline waste sludge is thrown away, the environment such as river or the like is not in danger of pollution.
COPYRIGHT: (C)1980,JPO&Japio
JP4583979A 1979-04-12 1979-04-12 Treating method of sludge Pending JPS55137100A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4583979A JPS55137100A (en) 1979-04-12 1979-04-12 Treating method of sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4583979A JPS55137100A (en) 1979-04-12 1979-04-12 Treating method of sludge

Publications (1)

Publication Number Publication Date
JPS55137100A true JPS55137100A (en) 1980-10-25

Family

ID=12730383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4583979A Pending JPS55137100A (en) 1979-04-12 1979-04-12 Treating method of sludge

Country Status (1)

Country Link
JP (1) JPS55137100A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424769A (en) * 1977-07-25 1979-02-24 Kurita Industrial Co Ltd Apparatus for producing compost from sludge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424769A (en) * 1977-07-25 1979-02-24 Kurita Industrial Co Ltd Apparatus for producing compost from sludge

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