JPS5597300A - Drying method and apparatus for sludge - Google Patents

Drying method and apparatus for sludge

Info

Publication number
JPS5597300A
JPS5597300A JP477779A JP477779A JPS5597300A JP S5597300 A JPS5597300 A JP S5597300A JP 477779 A JP477779 A JP 477779A JP 477779 A JP477779 A JP 477779A JP S5597300 A JPS5597300 A JP S5597300A
Authority
JP
Japan
Prior art keywords
sludge
filter bed
divided
layer
water
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
JP477779A
Other languages
Japanese (ja)
Inventor
Yukio Kobayashi
Kenichi Hase
Makoto Kato
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.)
Suido Kiko Kaisha Ltd
Original Assignee
Suido Kiko Kaisha 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 Suido Kiko Kaisha Ltd filed Critical Suido Kiko Kaisha Ltd
Priority to JP477779A priority Critical patent/JPS5597300A/en
Publication of JPS5597300A publication Critical patent/JPS5597300A/en
Pending legal-status Critical Current

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To dry sludge bu saving installation and expenditure by using a system in which nozzle is provided in the floor of sludge filter bed, where the floor is covered with water-permeable particles, and aeration is performed intermittently through the nozzle.
CONSTITUTION: Sludge is introduced to the filter bed 12 to sediment it, and the blower 15 is operated to close a waste water valve by using the intermittent operation switching valve 14 of the first divided sludge filter bed, send compressed air to the cavity 11 of the bottom, and then perform aeration through the filter layer 16, where compressed air blows out throughout the porous water-permeable layer 9, sand particles are vibrated and fluidized by the rise of bubbles in the upper filter layer 16, sludge adhered to the surfaces of sand particles is separated by the rubbing action of sand particle themselves, and blocking is broken and water permeability is restored. On the other hand, bubbles rising through sludge accelerates even evaporation from the inside of liquid layer. By switching the intermittent operation switching valve 14, opening the waste water valve of the first divided sludge filter bed 12 to the open air, and aerating the second divided filter bed 12, the operation is gradually restored.
COPYRIGHT: (C)1980,JPO&Japio
JP477779A 1979-01-22 1979-01-22 Drying method and apparatus for sludge Pending JPS5597300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP477779A JPS5597300A (en) 1979-01-22 1979-01-22 Drying method and apparatus for sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP477779A JPS5597300A (en) 1979-01-22 1979-01-22 Drying method and apparatus for sludge

Publications (1)

Publication Number Publication Date
JPS5597300A true JPS5597300A (en) 1980-07-24

Family

ID=11593251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP477779A Pending JPS5597300A (en) 1979-01-22 1979-01-22 Drying method and apparatus for sludge

Country Status (1)

Country Link
JP (1) JPS5597300A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100331181B1 (en) * 1999-07-12 2002-04-06 대한민국(관리청:특허청장, 승계청:국립환경연구원장) High-Rate Drying Bed

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5188882A (en) * 1975-01-31 1976-08-03
JPS5279558A (en) * 1975-12-24 1977-07-04 Masayuki Nishitani Method of and apparatus for drying sludge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5188882A (en) * 1975-01-31 1976-08-03
JPS5279558A (en) * 1975-12-24 1977-07-04 Masayuki Nishitani Method of and apparatus for drying sludge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100331181B1 (en) * 1999-07-12 2002-04-06 대한민국(관리청:특허청장, 승계청:국립환경연구원장) High-Rate Drying Bed

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