CA2270811A1 - Filter underdrain system for backwash flow and method for measuring same - Google Patents

Filter underdrain system for backwash flow and method for measuring same Download PDF

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Publication number
CA2270811A1
CA2270811A1 CA002270811A CA2270811A CA2270811A1 CA 2270811 A1 CA2270811 A1 CA 2270811A1 CA 002270811 A CA002270811 A CA 002270811A CA 2270811 A CA2270811 A CA 2270811A CA 2270811 A1 CA2270811 A1 CA 2270811A1
Authority
CA
Canada
Prior art keywords
backwash flow
underdrain system
filter underdrain
measuring same
water
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
CA002270811A
Other languages
French (fr)
Other versions
CA2270811C (en
Inventor
David Hambley
Philip Hambley
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
Priority to CA2543681A priority Critical patent/CA2543681C/en
Priority to CA002270811A priority patent/CA2270811C/en
Publication of CA2270811A1 publication Critical patent/CA2270811A1/en
Application granted granted Critical
Publication of CA2270811C publication Critical patent/CA2270811C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01D24/001—Making filter elements not provided for elsewhere
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/34—Seals or gaskets for filtering elements
    • 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)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A method of apparatus for determining backwash water flow distribution through an underdrain assembly. A water tight housing is removably attached to the underdrain assembly and an indicator measures the rise and fall of water within the housing responsive to water introduced to the housing from the underdrain.
CA002270811A 1999-04-30 1999-04-30 Filter underdrain system for backwash flow and method for measuring same Expired - Lifetime CA2270811C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2543681A CA2543681C (en) 1999-04-30 1999-04-30 Filter underdrain system for backwash flow and method for measuring same
CA002270811A CA2270811C (en) 1999-04-30 1999-04-30 Filter underdrain system for backwash flow and method for measuring same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002270811A CA2270811C (en) 1999-04-30 1999-04-30 Filter underdrain system for backwash flow and method for measuring same

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2543681A Division CA2543681C (en) 1999-04-30 1999-04-30 Filter underdrain system for backwash flow and method for measuring same

Publications (2)

Publication Number Publication Date
CA2270811A1 true CA2270811A1 (en) 2000-10-30
CA2270811C CA2270811C (en) 2006-07-18

Family

ID=29588933

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2543681A Expired - Lifetime CA2543681C (en) 1999-04-30 1999-04-30 Filter underdrain system for backwash flow and method for measuring same
CA002270811A Expired - Lifetime CA2270811C (en) 1999-04-30 1999-04-30 Filter underdrain system for backwash flow and method for measuring same

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2543681A Expired - Lifetime CA2543681C (en) 1999-04-30 1999-04-30 Filter underdrain system for backwash flow and method for measuring same

Country Status (1)

Country Link
CA (2) CA2543681C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108744686A (en) * 2018-09-10 2018-11-06 净化控股集团股份有限公司 A kind of filter

Also Published As

Publication number Publication date
CA2543681C (en) 2012-11-27
CA2543681A1 (en) 2000-10-30
CA2270811C (en) 2006-07-18

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20190430

MKEX Expiry

Effective date: 20190430