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FR758249A - Method and apparatus for cleaning filter layers - Google Patents

Method and apparatus for cleaning filter layers

Info

Publication number
FR758249A
FR758249A FR758249DA FR758249A FR 758249 A FR758249 A FR 758249A FR 758249D A FR758249D A FR 758249DA FR 758249 A FR758249 A FR 758249A
Authority
FR
France
Prior art keywords
filter layers
cleaning filter
cleaning
layers
filter
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Adrien Chabal
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 filed Critical
Application granted granted Critical
Publication of FR758249A publication Critical patent/FR758249A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/20—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container
    • B01D24/22—Downward filtration, the filter material being supported by pervious surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4605—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer
    • B01D24/461—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer by scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4605—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer
    • B01D24/4621—Regenerating the filtering material in the filter by scrapers, brushes, nozzles or the like placed on the cake-side of the stationary filtering material and only contacting the external layer by nozzles acting on the cake side of the filter material, or by fluids acting in co-current direction with the feed stream

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
FR758249D 1933-07-11 1933-07-11 Method and apparatus for cleaning filter layers Expired FR758249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR758249T 1933-07-11

Publications (1)

Publication Number Publication Date
FR758249A true FR758249A (en) 1934-01-12

Family

ID=9166568

Family Applications (1)

Application Number Title Priority Date Filing Date
FR758249D Expired FR758249A (en) 1933-07-11 1933-07-11 Method and apparatus for cleaning filter layers

Country Status (1)

Country Link
FR (1) FR758249A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3138676A1 (en) * 1981-09-29 1983-04-14 Passavant-Werke AG & Co KG, 6209 Aarbergen FILTER DEVICE WITH A DEVICE FOR RINSING THE FILTER BED
EP0310221A1 (en) * 1987-10-02 1989-04-05 Thames Water Utilities Limited Slow sand filter cleaning device
FR2707179A1 (en) * 1993-07-06 1995-01-13 Sagep Washer raft for water-filtration sands

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3138676A1 (en) * 1981-09-29 1983-04-14 Passavant-Werke AG & Co KG, 6209 Aarbergen FILTER DEVICE WITH A DEVICE FOR RINSING THE FILTER BED
EP0310221A1 (en) * 1987-10-02 1989-04-05 Thames Water Utilities Limited Slow sand filter cleaning device
US4911831A (en) * 1987-10-02 1990-03-27 Thames Water Authority Slow sand filters
FR2707179A1 (en) * 1993-07-06 1995-01-13 Sagep Washer raft for water-filtration sands

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