CA1077408A - Filter bottom - Google Patents

Filter bottom

Info

Publication number
CA1077408A
CA1077408A CA270,978A CA270978A CA1077408A CA 1077408 A CA1077408 A CA 1077408A CA 270978 A CA270978 A CA 270978A CA 1077408 A CA1077408 A CA 1077408A
Authority
CA
Canada
Prior art keywords
longitudinal
longitudinal elements
blocks
channels
filter bottom
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
CA270,978A
Other languages
English (en)
French (fr)
Inventor
Donald F. Heaney
Delbert L. Boal
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.)
Dravo Corp
Original Assignee
Dravo Corp
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 Dravo Corp filed Critical Dravo Corp
Application granted granted Critical
Publication of CA1077408A publication Critical patent/CA1077408A/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
    • B01D24/46—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
    • 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
    • B01D24/14—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
    • B01D24/02—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
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0415—Details of supporting structures

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
CA270,978A 1976-02-27 1977-02-03 Filter bottom Expired CA1077408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/662,131 US4064050A (en) 1976-02-27 1976-02-27 Filter bottom

Publications (1)

Publication Number Publication Date
CA1077408A true CA1077408A (en) 1980-05-13

Family

ID=24656492

Family Applications (1)

Application Number Title Priority Date Filing Date
CA270,978A Expired CA1077408A (en) 1976-02-27 1977-02-03 Filter bottom

Country Status (3)

Country Link
US (1) US4064050A (show.php)
JP (1) JPS52106164A (show.php)
CA (1) CA1077408A (show.php)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331542A (en) * 1980-08-01 1982-05-25 Enviroquip, Inc. Underdrain unit with air/water backwash for granular filtration system
US4536287A (en) * 1984-04-18 1985-08-20 Himsley Engineering Limited Piping for use in liquid collection and distribution
US4923606A (en) * 1988-02-26 1990-05-08 Tetra Technologies Plastic-jacketed filter underdrain block
US5232592A (en) * 1991-04-03 1993-08-03 The F. B. Leopold Company, Inc. Cap for underdrains in gravity filters
US5087362A (en) * 1991-07-26 1992-02-11 F.B. Leopold Company, Inc. Flume distribution system with removable block
US5332497A (en) * 1991-10-25 1994-07-26 Baker Hughes Incorporated Nozzleless underdrain for granular filtration system
US5160614A (en) * 1992-02-25 1992-11-03 The F.B. Leopold Company, Inc. Air duct block for air/water underdrain systems in gravity filters
US5496472A (en) * 1993-12-20 1996-03-05 Tetra Technologies, Inc. Method and apparatus for denitrification of wastewater
US5489388A (en) * 1994-04-12 1996-02-06 The F. B. Leopold Co., Inc. Apparatus and method for improving gas backwash in lateral underdrains
US5776344A (en) * 1995-10-26 1998-07-07 Tetra Technologies Inc. Method for removing nitrogen from wastewater
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
WO2006130341A2 (en) * 2005-05-17 2006-12-07 The F.B. Leopold Company Inc. Apparatus and method for distributing gas and liquid during backwash in filter underdrain flumes using dual separation
US20110030307A1 (en) * 2009-08-10 2011-02-10 Caterpillar Inc. Concrete bar slag container
US12246271B2 (en) * 2023-04-04 2025-03-11 De Nora Water Technologies, LLC Media retention plate for a block underdrain system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190604141A (en) * 1906-02-20 1906-12-31 Ernest Evans Willou Berrington Aeration and Drainage Floor for Bacteriological, Sewage, Water or other Filters.
US1687782A (en) * 1927-06-20 1928-10-16 Plymouth Clay Products Company Floor block for disposal tanks
DE696980C (de) * 1934-08-17 1940-10-03 Ozongesellschaft M B H Fluessigkeitsfilter
FR1007754A (fr) * 1948-03-26 1952-05-09 Chabal & Cie C élément répartiteur d'air et d'eau utilisé comme support de la couche filtrante dans les bassins de filtration
DE833628C (de) * 1950-11-22 1952-03-10 Georg Batz Dipl Ing Hohler Tropfkoerper zur biologischen Abwasserreinigung
US3468422A (en) * 1967-02-03 1969-09-23 Chicago Bridge & Iron Co Ceramic filter bottom directly supporting media

Also Published As

Publication number Publication date
JPS5519648B2 (show.php) 1980-05-28
US4064050A (en) 1977-12-20
JPS52106164A (en) 1977-09-06

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Legal Events

Date Code Title Description
MKEX Expiry