FR2170302A5 - Filter back-washing - uses suction to increase flow of back-wash water - Google Patents

Filter back-washing - uses suction to increase flow of back-wash water

Info

Publication number
FR2170302A5
FR2170302A5 FR7143638A FR7143638A FR2170302A5 FR 2170302 A5 FR2170302 A5 FR 2170302A5 FR 7143638 A FR7143638 A FR 7143638A FR 7143638 A FR7143638 A FR 7143638A FR 2170302 A5 FR2170302 A5 FR 2170302A5
Authority
FR
France
Prior art keywords
washing
wash water
increase flow
vessels
uses suction
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
FR7143638A
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.)
MADERN JEAN PIERRE FR
Original Assignee
MADERN JEAN PIERRE FR
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 MADERN JEAN PIERRE FR filed Critical MADERN JEAN PIERRE FR
Priority to FR7143638A priority Critical patent/FR2170302A5/en
Application granted granted Critical
Publication of FR2170302A5 publication Critical patent/FR2170302A5/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
    • B01D24/002—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in parallel connection
    • 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
    • B01D24/10—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 held in a closed container
    • B01D24/12—Downward filtration, the filtering 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
    • B01D24/4631—Counter-current flushing, e.g. by air

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

Sand filter vessels or vessel using similar filter media receive an increased supply of water during back-washing from a pump or ejector which has its suction inlet connected to the backwash outlet, enhances backwash flow and avoids alteration in water supply on the delivery side to the vessels. When several filters are supplied by a common manifold, the arrangement allows all filters to continue to operate normally except the one to be backwashed, which takes extra water.
FR7143638A 1971-11-30 1971-11-30 Filter back-washing - uses suction to increase flow of back-wash water Expired FR2170302A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7143638A FR2170302A5 (en) 1971-11-30 1971-11-30 Filter back-washing - uses suction to increase flow of back-wash water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7143638A FR2170302A5 (en) 1971-11-30 1971-11-30 Filter back-washing - uses suction to increase flow of back-wash water

Publications (1)

Publication Number Publication Date
FR2170302A5 true FR2170302A5 (en) 1973-09-14

Family

ID=9086956

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7143638A Expired FR2170302A5 (en) 1971-11-30 1971-11-30 Filter back-washing - uses suction to increase flow of back-wash water

Country Status (1)

Country Link
FR (1) FR2170302A5 (en)

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Legal Events

Date Code Title Description
TP Transmission of property
GC Lien (pledge) constituted
CA Change of address
CD Change of name or company name
TP Transmission of property
ST Notification of lapse