ZA773819B - Improvements in or relating to granular-bed filters - Google Patents

Improvements in or relating to granular-bed filters

Info

Publication number
ZA773819B
ZA773819B ZA00773819A ZA773819A ZA773819B ZA 773819 B ZA773819 B ZA 773819B ZA 00773819 A ZA00773819 A ZA 00773819A ZA 773819 A ZA773819 A ZA 773819A ZA 773819 B ZA773819 B ZA 773819B
Authority
ZA
South Africa
Prior art keywords
granular
relating
bed filters
filters
bed
Prior art date
Application number
ZA00773819A
Inventor
W Brignal
S Metcalf
Original Assignee
Portals Water Treatment Ltd
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 Portals Water Treatment Ltd filed Critical Portals Water Treatment Ltd
Publication of ZA773819B publication Critical patent/ZA773819B/en

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
    • B01D24/02—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
    • B01D24/02—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
    • B01D24/22—Downward filtration, the filter 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)
  • Filtration Of Liquid (AREA)
ZA00773819A 1976-08-06 1977-06-24 Improvements in or relating to granular-bed filters ZA773819B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32881/76A GB1546683A (en) 1976-08-06 1976-08-06 Apparatus for backwashing granular-bed filters

Publications (1)

Publication Number Publication Date
ZA773819B true ZA773819B (en) 1978-05-30

Family

ID=10345430

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00773819A ZA773819B (en) 1976-08-06 1977-06-24 Improvements in or relating to granular-bed filters

Country Status (4)

Country Link
AU (1) AU505207B2 (en)
GB (1) GB1546683A (en)
IE (1) IE45397B1 (en)
ZA (1) ZA773819B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189712B (en) * 1986-05-02 1989-11-29 Biwater Treatment Ltd Water filtration installations
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

Also Published As

Publication number Publication date
AU2657777A (en) 1979-01-04
GB1546683A (en) 1979-05-31
IE45397L (en) 1978-02-06
AU505207B2 (en) 1979-11-15
IE45397B1 (en) 1982-08-11

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