CA2381602A1 - Clarifier cover - Google Patents

Clarifier cover Download PDF

Info

Publication number
CA2381602A1
CA2381602A1 CA 2381602 CA2381602A CA2381602A1 CA 2381602 A1 CA2381602 A1 CA 2381602A1 CA 2381602 CA2381602 CA 2381602 CA 2381602 A CA2381602 A CA 2381602A CA 2381602 A1 CA2381602 A1 CA 2381602A1
Authority
CA
Canada
Prior art keywords
clarifier
trusses
flexible sheet
wall
pulley
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
CA 2381602
Other languages
French (fr)
Other versions
CA2381602C (en
Inventor
Claude J. Degarie
Brent M. Howe
Brian R. Maclean
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.)
Evoqua Water Technologies Canada Ltd
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 CA002381602A priority Critical patent/CA2381602C/en
Priority to CA002501076A priority patent/CA2501076C/en
Priority to AU37067/02A priority patent/AU758712B1/en
Publication of CA2381602A1 publication Critical patent/CA2381602A1/en
Application granted granted Critical
Publication of CA2381602C publication Critical patent/CA2381602C/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
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0003—Making of sedimentation devices, structural details thereof, e.g. prefabricated parts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Tents Or Canopies (AREA)

Abstract

In the present invention, there is provided a removable cover for retaini ng off gases inside a clarifier. The cover comprises trusses extending across the clarifier and a flexible sheet laid across the trusses. Structural angle s enclose the clarifier and constitute a kick plate on the walkways around the clarifier for improving the safety of workers. One side of the flexible shee t is permanently affixed to a first wall of the clarifier. A series of pulleys are mounted inside the structural angles for pulling and releasably sealing the three other sides of the flexible sheet against the outmost trusses and against a second wall of the clarifier opposite the first wall. Each pulley has a cable-deflector bar extending substantially at a same level as a mounting surface of the pulley for increasing an angle of downward pull on the flexible sheet. The flexible sheet is rolled-up along the trusses to expose machinery inside the clarifier.
CA002381602A 2002-04-12 2002-04-12 Clarifier cover Expired - Lifetime CA2381602C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002381602A CA2381602C (en) 2002-04-12 2002-04-12 Clarifier cover
CA002501076A CA2501076C (en) 2002-04-12 2002-04-12 Clarifier cover
AU37067/02A AU758712B1 (en) 2002-04-12 2002-04-30 Clarifier cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002381602A CA2381602C (en) 2002-04-12 2002-04-12 Clarifier cover

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002501076A Division CA2501076C (en) 2002-04-12 2002-04-12 Clarifier cover

Publications (2)

Publication Number Publication Date
CA2381602A1 true CA2381602A1 (en) 2003-10-12
CA2381602C CA2381602C (en) 2005-05-17

Family

ID=4171137

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002501076A Expired - Lifetime CA2501076C (en) 2002-04-12 2002-04-12 Clarifier cover
CA002381602A Expired - Lifetime CA2381602C (en) 2002-04-12 2002-04-12 Clarifier cover

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002501076A Expired - Lifetime CA2501076C (en) 2002-04-12 2002-04-12 Clarifier cover

Country Status (2)

Country Link
AU (1) AU758712B1 (en)
CA (2) CA2501076C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11465075B2 (en) 2019-08-14 2022-10-11 Industrial & Environmental Concepts, Inc. Flexible launder covers and related methods
CN112642180A (en) * 2019-10-10 2021-04-13 上海展冀膜结构有限公司 Translational membrane cover for sewage pool

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4257132A (en) * 1978-08-25 1981-03-24 Kerby Frederick A Collapsible pool cover assembly
FR2582227B1 (en) * 1985-05-23 1988-04-01 Labarthe Benoit De DEVICE FOR COVERING OR DISCOVERING A SURFACE BY MEANS OF A COVER
US5038517A (en) * 1989-05-19 1991-08-13 Talbott Gene B Greenhouse construction

Also Published As

Publication number Publication date
CA2501076A1 (en) 2003-10-12
CA2381602C (en) 2005-05-17
AU758712B1 (en) 2003-03-27
CA2501076C (en) 2008-02-12

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20220412