FR541011A - Device for filtering surfaces supports with reinforced cement pipes for blowing compressed air - Google Patents

Device for filtering surfaces supports with reinforced cement pipes for blowing compressed air

Info

Publication number
FR541011A
FR541011A FR541011DA FR541011A FR 541011 A FR541011 A FR 541011A FR 541011D A FR541011D A FR 541011DA FR 541011 A FR541011 A FR 541011A
Authority
FR
France
Prior art keywords
compressed air
reinforced cement
blowing compressed
filtering surfaces
cement pipes
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)
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.)
Chabal & Cie H
Original Assignee
Chabal & Cie H
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 Chabal & Cie H filed Critical Chabal & Cie H
Application granted granted Critical
Publication of FR541011A publication Critical patent/FR541011A/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
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/087—Regeneration of the filter using gas bubbles, e.g. air
    • 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
    • B01D24/4668—Regenerating the filtering material in the filter by moving the filtering element
    • B01D24/4684—Regenerating the filtering material in the filter by moving the filtering element using spray devices

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
FR541011D 1921-09-12 1921-09-12 Device for filtering surfaces supports with reinforced cement pipes for blowing compressed air Expired FR541011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR541011T 1921-09-12

Publications (1)

Publication Number Publication Date
FR541011A true FR541011A (en) 1922-07-21

Family

ID=8929815

Family Applications (1)

Application Number Title Priority Date Filing Date
FR541011D Expired FR541011A (en) 1921-09-12 1921-09-12 Device for filtering surfaces supports with reinforced cement pipes for blowing compressed air

Country Status (1)

Country Link
FR (1) FR541011A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559936A (en) * 1946-06-17 1951-07-10 Services Ind De Geneve Filtering apparatus for liquids
US5269920A (en) * 1991-04-03 1993-12-14 The F. B. Leopold Co., Inc. Cap system for underdrains in gravity filters
WO1997040907A1 (en) * 1996-04-26 1997-11-06 Tetra Technologies, Inc. Fluid treatment media support system
WO1999047232A1 (en) * 1998-03-19 1999-09-23 Tetra Technologies, Inc. Method for using a gravity filter
US6991723B2 (en) 2001-09-10 2006-01-31 Rg Delaware, Inc. Underdrain system
US7074329B2 (en) 2001-10-26 2006-07-11 Tetra Technologies, Div Capital Controls, Severn Trent Services Co. Lid for an underdrain block
US8052871B2 (en) 2001-09-10 2011-11-08 Rg Delaware, Inc. Underdrain system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559936A (en) * 1946-06-17 1951-07-10 Services Ind De Geneve Filtering apparatus for liquids
US5269920A (en) * 1991-04-03 1993-12-14 The F. B. Leopold Co., Inc. Cap system for underdrains in gravity filters
WO1997040907A1 (en) * 1996-04-26 1997-11-06 Tetra Technologies, Inc. Fluid treatment media support system
US6261453B1 (en) 1996-04-26 2001-07-17 Tetra Process Technologies, Div. Capital Controls Company, Inc Fluid treatment media support system
WO1999047232A1 (en) * 1998-03-19 1999-09-23 Tetra Technologies, Inc. Method for using a gravity filter
US6991723B2 (en) 2001-09-10 2006-01-31 Rg Delaware, Inc. Underdrain system
US7288194B2 (en) 2001-09-10 2007-10-30 Rg Deleware, Inc. Underdrain system
US8052871B2 (en) 2001-09-10 2011-11-08 Rg Delaware, Inc. Underdrain system
US7074329B2 (en) 2001-10-26 2006-07-11 Tetra Technologies, Div Capital Controls, Severn Trent Services Co. Lid for an underdrain block

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