DK0480176T3 - Process for dewatering aqueous sludge - Google Patents

Process for dewatering aqueous sludge

Info

Publication number
DK0480176T3
DK0480176T3 DK91115039.9T DK91115039T DK0480176T3 DK 0480176 T3 DK0480176 T3 DK 0480176T3 DK 91115039 T DK91115039 T DK 91115039T DK 0480176 T3 DK0480176 T3 DK 0480176T3
Authority
DK
Denmark
Prior art keywords
pressure
piston
filtering
drainage
sludge
Prior art date
Application number
DK91115039.9T
Other languages
Danish (da)
Inventor
Wolfgang Dipl-Ing Mueller
Dirk Dipl-Ing Herzog
Original Assignee
Mueller Umwelttechnik
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 Mueller Umwelttechnik filed Critical Mueller Umwelttechnik
Application granted granted Critical
Publication of DK0480176T3 publication Critical patent/DK0480176T3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
    • B30B9/06—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

In the case of the known discontinuous drainage processes in which the operating pressure has to be reduced to the surrounding pressure between the removal of the drained sludge cake and the refilling of the drainage apparatus, the filtering action can quickly drop off since fresh raw sludge reaches the drainage chambers only by passing already used filtering surfaces and pushing along in front of it a portion of already predrained sludge cake. The novel process is intended to permit a continuous operation with uniform pressure level and a constant, high filtering capacity while at the same time reducing the possibility of faults arising to a minimum. This is achieved in that the fresh raw sludge (21) is fed at constant pressure in the opposite direction in each case to the direction of movement of the piston (8), in particular in the immediate vicinity of the piston, to the filtering surface shortly after the latter has been swept over by the piston and thereby cleaned. The process and the apparatus for carrying out the process thus make it possible for aqueous sludges to be drained continuously by means of pressure. <IMAGE>
DK91115039.9T 1990-10-10 1991-09-06 Process for dewatering aqueous sludge DK0480176T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4032145A DE4032145C1 (en) 1990-10-10 1990-10-10

Publications (1)

Publication Number Publication Date
DK0480176T3 true DK0480176T3 (en) 1994-12-05

Family

ID=6416009

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91115039.9T DK0480176T3 (en) 1990-10-10 1991-09-06 Process for dewatering aqueous sludge

Country Status (5)

Country Link
EP (1) EP0480176B1 (en)
AT (1) ATE110024T1 (en)
DE (2) DE4032145C1 (en)
DK (1) DK0480176T3 (en)
ES (1) ES2057690T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4223503A1 (en) * 1992-07-17 1994-01-20 Mueller Umwelttechnik Appts. for disposal of slurries contg. oil or other grease - comprises slurry press whose filtrate is segregated into oil, water and oil slurry phases
JPH0691397A (en) * 1992-09-11 1994-04-05 Nagaoka:Kk Pressing type dehydration device for sludge treatment and method for treating sludge
JP3359409B2 (en) * 1994-01-12 2002-12-24 株式会社ナガオカ Pressurized dehydrator for sludge treatment and sludge treatment method
ITRM980190A1 (en) * 1998-03-25 1998-06-25 Gioia Antonio La CAGE CONCRETE DRYER
DE19947044B9 (en) * 1999-09-30 2007-09-13 Osram Opto Semiconductors Gmbh Surface-mountable optoelectronic component with reflector and method for producing the same
DE102009008904A1 (en) * 2009-02-13 2010-09-02 Gosatec Gmbh Apparatus and method for liquid separation
AT508024B1 (en) * 2009-06-18 2010-10-15 Celtec Gmbh DEVICE FOR REMOVING GREEN SOLIDS

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE249275C (en) *
DE198415C (en) * 1905-12-26
DE263722C (en) * 1912-04-06 1913-09-09 Roth Philipp
DE1035101B (en) * 1955-05-25 1958-07-31 Dr Hans Heymann Filter press
DE3641180A1 (en) * 1986-12-02 1988-06-16 Mueller Umwelttechnik DEVICE FOR PRESSURE DRAINAGE OF AQUEOUS SLUDGE
DK158149C (en) * 1987-03-31 1990-08-27 Optimal Miljoeteknik Aps SLAM DRAINAGE DEVICE

Also Published As

Publication number Publication date
EP0480176B1 (en) 1994-08-17
ES2057690T3 (en) 1994-10-16
DE59102559D1 (en) 1994-09-22
DE4032145C1 (en) 1992-01-16
ATE110024T1 (en) 1994-09-15
EP0480176A1 (en) 1992-04-15

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