CA2187192C - Crepine pour drain de sortie et procedes d'utilisation - Google Patents

Crepine pour drain de sortie et procedes d'utilisation Download PDF

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Publication number
CA2187192C
CA2187192C CA002187192A CA2187192A CA2187192C CA 2187192 C CA2187192 C CA 2187192C CA 002187192 A CA002187192 A CA 002187192A CA 2187192 A CA2187192 A CA 2187192A CA 2187192 C CA2187192 C CA 2187192C
Authority
CA
Canada
Prior art keywords
air
laterals
filter
grid
media
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 - Lifetime
Application number
CA002187192A
Other languages
English (en)
Other versions
CA2187192A1 (fr
Inventor
R. Lee Roberts
Douglas H. Eden
Andrew S. Taylor
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.)
RF Delaware Inc
Original Assignee
RF Delaware Inc
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
Priority claimed from US08/223,236 external-priority patent/US5534202A/en
Application filed by RF Delaware Inc filed Critical RF Delaware Inc
Publication of CA2187192A1 publication Critical patent/CA2187192A1/fr
Application granted granted Critical
Publication of CA2187192C publication Critical patent/CA2187192C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B01D24/4631—Counter-current flushing, e.g. by air

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Separating Particles In Gases By Inertia (AREA)

Abstract

L'invention décrit des systèmes de crépine utilisés pour distribuer un gaz à l'intérieur de systèmes de traitement tels que filtres à drain de sortie (50) et clarificateurs par contact. La crépine est maintenue en place par en-dessus, ce qui permet de l'abaisser pour la mettre dans la position voulue et, ainsi, de la modifier ou de la réparer. De plus, cette caractéristique permet d'installer après coup une crépine dans un système existant, tel qu'un filtre à drain de sortie, dans lequel le lit de substances (60) recouvre le drain de sortie (50) et n'est pas dérangé par cette installation. L'invention concerne ainsi également des procédés d'installation ou d'installation après coup de systèmes de crépine. Un autre aspect de la présente invention concerne une crépine constituée d'un collecteur d'air (108) relié à des conduites d'air secondaires (110) par une rampe (109) introduite à travers un orifice lisse dans les parois du collecteur, ce qui permet d'obtenir une structure simple et facile à fabriquer qui évite les problèmes rencontrés avec des composants de l'état antérieur de la technique.
CA002187192A 1994-04-05 1995-04-04 Crepine pour drain de sortie et procedes d'utilisation Expired - Lifetime CA2187192C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/223,236 US5534202A (en) 1994-04-05 1994-04-05 Air grid for underdrains and similar systems
US08/223,236 1994-04-05
PCT/US1995/004145 WO1995026799A1 (fr) 1994-04-05 1995-04-04 Crepine pour drain de sortie et procedes d'utilisation

Publications (2)

Publication Number Publication Date
CA2187192A1 CA2187192A1 (fr) 1995-10-12
CA2187192C true CA2187192C (fr) 2007-05-01

Family

ID=38051333

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002187192A Expired - Lifetime CA2187192C (fr) 1994-04-05 1995-04-04 Crepine pour drain de sortie et procedes d'utilisation

Country Status (1)

Country Link
CA (1) CA2187192C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113896317A (zh) * 2021-10-22 2022-01-07 广东卓信环境科技股份有限公司 一种用于滤池反洗的气水独立的配水配气复合滤管

Also Published As

Publication number Publication date
CA2187192A1 (fr) 1995-10-12

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Effective date: 20150407