SE9604088L - Method and apparatus for separating fine particles from backwater - Google Patents

Method and apparatus for separating fine particles from backwater

Info

Publication number
SE9604088L
SE9604088L SE9604088A SE9604088A SE9604088L SE 9604088 L SE9604088 L SE 9604088L SE 9604088 A SE9604088 A SE 9604088A SE 9604088 A SE9604088 A SE 9604088A SE 9604088 L SE9604088 L SE 9604088L
Authority
SE
Sweden
Prior art keywords
white water
fine particles
displaced
section
backwater
Prior art date
Application number
SE9604088A
Other languages
Swedish (sv)
Other versions
SE9604088D0 (en
SE509553C2 (en
Inventor
Roine Andersson
Lars-Goeran Rundqvist
Original Assignee
Alfa Laval Ab
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 Alfa Laval Ab filed Critical Alfa Laval Ab
Priority to SE9604088A priority Critical patent/SE509553C2/en
Publication of SE9604088D0 publication Critical patent/SE9604088D0/en
Priority to PCT/SE1997/001763 priority patent/WO1998020959A1/en
Publication of SE9604088L publication Critical patent/SE9604088L/en
Publication of SE509553C2 publication Critical patent/SE509553C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/801—Driving means, shaft packing systems or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • B01D33/808—Accessories integrally combined with devices for controlling the filtration by pressure measuring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Revetment (AREA)
  • Filtering Materials (AREA)

Abstract

Fine particles are separated from white water by the use of a disc filter, which comprises at least one rotating vertical filter disc (2), partly immersed in the white water to be separated, thereby sections (27) of the filter medium (5) of the filter disc are alternately displaced up from and down into the white water. When a section is displaced up from the white water it is covered by a cake containing fine particles which are detached in a detaching zone (16) before the section again is displaced down into the white water. According to the invention, each section is provided with a layer, solely containing fibres, in a forming zone (20) during each revolution and the section with its fibre layer is displaced through the white water in a separation zone (30), so that fine particles are deposited on the fibre layer and together with the latter form said cake.
SE9604088A 1996-11-08 1996-11-08 Method and apparatus for separating fine particles from backwater SE509553C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9604088A SE509553C2 (en) 1996-11-08 1996-11-08 Method and apparatus for separating fine particles from backwater
PCT/SE1997/001763 WO1998020959A1 (en) 1996-11-08 1997-10-22 Method and device for separating fine particles from white water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9604088A SE509553C2 (en) 1996-11-08 1996-11-08 Method and apparatus for separating fine particles from backwater

Publications (3)

Publication Number Publication Date
SE9604088D0 SE9604088D0 (en) 1996-11-08
SE9604088L true SE9604088L (en) 1998-05-09
SE509553C2 SE509553C2 (en) 1999-02-08

Family

ID=20404538

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9604088A SE509553C2 (en) 1996-11-08 1996-11-08 Method and apparatus for separating fine particles from backwater

Country Status (2)

Country Link
SE (1) SE509553C2 (en)
WO (1) WO1998020959A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100395201C (en) * 2006-09-08 2008-06-18 臧立新 Treatment reuse technique for paper-making white-water
CN103663776B (en) * 2013-09-23 2015-07-15 浙江凯丰纸业有限公司 Papermaking white water circulating treatment method and treatment device
FI129909B (en) * 2021-10-12 2022-10-31 Valmet Technologies Oy Continuous disc filter device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564003B1 (en) * 1984-05-14 1989-06-23 Pechiney Aluminium DEVICE FOR FEEDING ROTARY DISC FILTERS BY RUNOFF
SE451948B (en) * 1985-05-02 1987-11-09 Hedemora Ab FILTER FOR CONTINUOUS FILTERING UNDER PRESSURE OF A SUSPENSION
SE463601B (en) * 1989-03-13 1990-12-17 Hedemora Ab FILTER FOR CONTINUOUS FILTERING OF A SUSPENSION

Also Published As

Publication number Publication date
WO1998020959A1 (en) 1998-05-22
SE9604088D0 (en) 1996-11-08
SE509553C2 (en) 1999-02-08

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Legal Events

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NUG Patent has lapsed