ATE84239T1 - Filter mit koernigem filtermaterial. - Google Patents

Filter mit koernigem filtermaterial.

Info

Publication number
ATE84239T1
ATE84239T1 AT89303281T AT89303281T ATE84239T1 AT E84239 T1 ATE84239 T1 AT E84239T1 AT 89303281 T AT89303281 T AT 89303281T AT 89303281 T AT89303281 T AT 89303281T AT E84239 T1 ATE84239 T1 AT E84239T1
Authority
AT
Austria
Prior art keywords
conduit
filters
filter material
air
water
Prior art date
Application number
AT89303281T
Other languages
English (en)
Inventor
Philip Antony Weston
Original Assignee
Pwt Projects Ltd
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 Pwt Projects Ltd filed Critical Pwt Projects Ltd
Application granted granted Critical
Publication of ATE84239T1 publication Critical patent/ATE84239T1/de

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
    • B01D24/24—Downward filtration, the container having distribution or collection headers or pervious conduits
    • 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
    • B01D24/4626—Construction of spray heads specially adapted for regeneration of the filter material or for filtrate discharging
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/32—Gaseous fluid conveying

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Centrifugal Separators (AREA)
  • Disintegrating Or Milling (AREA)
  • Filtering Materials (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
AT89303281T 1988-04-07 1989-04-03 Filter mit koernigem filtermaterial. ATE84239T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888808133A GB8808133D0 (en) 1988-04-07 1988-04-07 Granular media filters
EP89303281A EP0336686B1 (de) 1988-04-07 1989-04-03 Filter mit körnigem Filtermaterial

Publications (1)

Publication Number Publication Date
ATE84239T1 true ATE84239T1 (de) 1993-01-15

Family

ID=10634721

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89303281T ATE84239T1 (de) 1988-04-07 1989-04-03 Filter mit koernigem filtermaterial.

Country Status (6)

Country Link
US (1) US4995990A (de)
EP (1) EP0336686B1 (de)
AT (1) ATE84239T1 (de)
DE (1) DE68904222T2 (de)
GB (1) GB8808133D0 (de)
NZ (1) NZ228643A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269920A (en) * 1991-04-03 1993-12-14 The F. B. Leopold Co., Inc. Cap system for underdrains in gravity filters
US5089147A (en) * 1991-05-01 1992-02-18 Zimpro Passavant Environmental Systems, Inc. Underdrain for granular medium filter
JPH06170117A (ja) * 1992-08-05 1994-06-21 Peter J Neuspiel 濾過装置用下部集水モジュール及び濾過装置用下部集水システム
US5489388A (en) * 1994-04-12 1996-02-06 The F. B. Leopold Co., Inc. Apparatus and method for improving gas backwash in lateral underdrains
US6312611B1 (en) 1996-07-31 2001-11-06 The F.B. Leopold Co., Inc. Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes
BRPI0612927A2 (pt) * 2005-05-17 2012-10-02 Leopold Co Inc F B aparelho e método para a distribuição de gás e de lìquido durante a contra-lavagem nos filtros das calhas inferiores de escoamento usando uma separação dupla
US20080121580A1 (en) * 2006-11-27 2008-05-29 Weatherford/ Lamb, Inc. Geometrically Variable Filter Underdrain Header
US10022654B2 (en) 2012-12-17 2018-07-17 Xylem Water Solutions Zelienople Llc Gas-liquid distribution technique for water or wastewater filters using underdrains

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1069737A (en) * 1911-03-13 1913-08-12 William A Stevenson Method of cleaning filter-beds.
GB304967A (en) * 1928-02-20 1929-01-31 Bamag Meguin Ag Improvements relating to filters
DE689443C (de) * 1935-09-18 1940-03-20 Max Kolshorn uer Fluessigkeiten
DE736915C (de) * 1936-11-28 1943-07-01 Bamag Meguin Ag Rueckspuelfilterboden fuer koernige Filtermasse
US2767852A (en) * 1952-05-13 1956-10-23 Ellila Karl Lauri Filter apparatus
FR1470610A (fr) * 1966-03-03 1967-02-24 Beteiligungs & Patentverw Gmbh Fond pour filtre à liquide
US3954620A (en) * 1974-10-25 1976-05-04 Hydrotechnic Corporation Filtration and backwashing apparatus for use with a water filtration system
JPS5635219Y2 (de) * 1977-08-12 1981-08-19
US4707257A (en) * 1986-05-29 1987-11-17 The Graver Company Air/water distributor underdrain
US4753726A (en) * 1987-03-09 1988-06-28 Essef Corporation Distributor for filters

Also Published As

Publication number Publication date
GB8808133D0 (en) 1988-05-11
EP0336686A1 (de) 1989-10-11
NZ228643A (en) 1990-06-26
US4995990A (en) 1991-02-26
EP0336686B1 (de) 1993-01-07
DE68904222T2 (de) 1993-07-01
DE68904222D1 (de) 1993-02-18

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties