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CA2256385A1 - Radial-flow fluidizable filter - Google Patents

Radial-flow fluidizable filter

Info

Publication number
CA2256385A1
CA2256385A1 CA002256385A CA2256385A CA2256385A1 CA 2256385 A1 CA2256385 A1 CA 2256385A1 CA 002256385 A CA002256385 A CA 002256385A CA 2256385 A CA2256385 A CA 2256385A CA 2256385 A1 CA2256385 A1 CA 2256385A1
Authority
CA
Canada
Prior art keywords
granular particles
granular
backwash
bed
filtration
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.)
Granted
Application number
CA002256385A
Other languages
French (fr)
Other versions
CA2256385C (en
Inventor
John D. Martin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2256385A1 publication Critical patent/CA2256385A1/en
Application granted granted Critical
Publication of CA2256385C publication Critical patent/CA2256385C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/153—Anti-leakage or anti-return valves
    • 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
    • B01D24/04—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 clamped between pervious fixed walls
    • B01D24/08—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 clamped between pervious fixed walls the filtering material being supported by at least two pervious coaxial walls
    • 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
    • B01D24/38—Feed or discharge devices
    • B01D24/42—Feed or discharge devices for discharging filtrate
    • 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
    • B01D24/4631—Counter-current flushing, e.g. by 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/44—Special measures allowing the even or uniform distribution of fluid along the length of a conduit

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • External Artificial Organs (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A radial-flow filter (120) employing nonbonded granular particles (56) for filtering impurities from an influent, and that can be backwashed by fluidizing the granular particles (56) to free the impurities therefrom. During a backwashing operation, a backwash liquid applies an upwardly-directed drag force on an upper portion of the granular particles (56) to lift the same into a backwash chamber (62) for fluidization. Once the top portion of the granular particles (56) of the filtration bed is fluidized, the backwash liquid applies an upward force on a subsequent portion of the granular bed, thereby fluidizing the granular particles (56) in the backwash chamber (62). Subsequent sections of the granular bed are fluidized in a similar manner to thereby completely clean the granular particles (56).
After the backwash operation, the granular particles (56) fall back to the filtration chamber (156) and form a filter bed for carrying out a filtration operation.
CA002256385A 1996-05-23 1997-05-23 Radial-flow fluidizable filter Expired - Fee Related CA2256385C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US1816896P 1996-05-23 1996-05-23
US60/018,168 1996-05-23
US2367996P 1996-08-17 1996-08-17
US60/023,679 1996-08-17
PCT/US1997/008942 WO1997044111A1 (en) 1996-05-23 1997-05-23 Radial-flow fluidizable filter

Publications (2)

Publication Number Publication Date
CA2256385A1 true CA2256385A1 (en) 1997-11-27
CA2256385C CA2256385C (en) 2005-12-06

Family

ID=26690813

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002256385A Expired - Fee Related CA2256385C (en) 1996-05-23 1997-05-23 Radial-flow fluidizable filter

Country Status (6)

Country Link
EP (1) EP0909207A4 (en)
CN (1) CN1080131C (en)
AU (1) AU715029B2 (en)
CA (1) CA2256385C (en)
MX (1) MXPA98010890A (en)
WO (1) WO1997044111A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6852232B2 (en) * 1996-05-23 2005-02-08 John D. Martin Down flow radial flow filter
CN103842046B (en) 2011-10-03 2016-01-13 株式会社石垣 Unsetting filtering medium layer and possess its filter plant
NL1041872B1 (en) * 2016-05-18 2017-11-30 Waterslag B V Device and method for filtering a contamination from a liquid, also a method for regenerating such a device
CA3075447A1 (en) * 2017-09-15 2019-03-21 Filippo Bussinelli Apparatus for filtering liquids
IT201700103653A1 (en) * 2017-09-15 2019-03-15 Filippo Bussinelli FILTERING EQUIPMENT FOR FILTRATION OF LIQUIDS
CN114570109B (en) * 2022-05-09 2022-07-19 北京市一滴水环保科技有限公司 Composite filter element assembly, sedimentation filter tank and backwashing method of composite filter element assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR605514A (en) * 1924-10-01 1926-05-28
US4021339A (en) * 1973-05-24 1977-05-03 Patrick Foody Water filter
US4019985A (en) * 1975-07-30 1977-04-26 Texaco Inc. Methods for fluidizing a filter media
US4185466A (en) * 1978-05-22 1980-01-29 Grumman Aerospace Corporation Partial pressure condensation pump
US4643836A (en) * 1985-10-01 1987-02-17 Schmid Lawrence A Radial flow filter having air fluidizing backwash means

Also Published As

Publication number Publication date
MXPA98010890A (en) 2004-05-21
EP0909207A4 (en) 2000-10-04
CN1226182A (en) 1999-08-18
HK1022114A1 (en) 2000-07-28
EP0909207A1 (en) 1999-04-21
CN1080131C (en) 2002-03-06
CA2256385C (en) 2005-12-06
WO1997044111A1 (en) 1997-11-27
AU3473997A (en) 1997-12-09
AU715029B2 (en) 2000-01-13

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20160524