GB1282586A - Improvements in and relating to water filtration plant - Google Patents

Improvements in and relating to water filtration plant

Info

Publication number
GB1282586A
GB1282586A GB37631/69A GB3763169A GB1282586A GB 1282586 A GB1282586 A GB 1282586A GB 37631/69 A GB37631/69 A GB 37631/69A GB 3763169 A GB3763169 A GB 3763169A GB 1282586 A GB1282586 A GB 1282586A
Authority
GB
United Kingdom
Prior art keywords
water
grains
filter
backflushing
flow
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
GB37631/69A
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer AG
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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of GB1282586A publication Critical patent/GB1282586A/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
    • B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Filtering Materials (AREA)

Abstract

1282586 Granular filter; backflushing SULZER BROS Ltd 25 July 1969 [26 July 1968] 37631/69 Heading B1D A water filter comprises an upper volumetric filter layer 8 comprising grains of low specific gravity and large grain size the sizes being substantially similar or spread over a relatively small range, and a lower surface filter layer comprising grains of high specific gravity and small grain size, the sizes being spread over a relatively larger range. Cleaning by backflushing is effected by stopping the flow of water at 6, allowing the water level to fall to the level of slot 22, passing air from 16 up through the layers, adding a backflush of water from 17 through the layers, stopping the flow of gas from 16, allowing the backflushing water to carry dirt through slot 22, adjusting the flow of backflush water to hydraulically grade the filter grains, and finally reducing the supply of water to allow the grains to settle. The upper layer may comprise roughed grains of plastics material, pumice stone; active carbon or anthracite. The lower layer may comprise quartz, corundum or garnet.
GB37631/69A 1968-07-26 1969-07-25 Improvements in and relating to water filtration plant Expired GB1282586A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1127468A CH494053A (en) 1968-07-26 1968-07-26 Filter system for the production of industrial and drinking water and process for the operation of this system

Publications (1)

Publication Number Publication Date
GB1282586A true GB1282586A (en) 1972-07-19

Family

ID=4371863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37631/69A Expired GB1282586A (en) 1968-07-26 1969-07-25 Improvements in and relating to water filtration plant

Country Status (6)

Country Link
CH (1) CH494053A (en)
DE (1) DE1784397A1 (en)
FR (1) FR2013771A1 (en)
GB (1) GB1282586A (en)
IT (1) IT1030509B (en)
NL (1) NL6811393A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118452A (en) * 1982-04-21 1983-11-02 Permutit Boby Ltd Filtration method and apparatus
EP0096670A1 (en) * 1982-06-04 1983-12-21 Leif Ernryd Ab Apparatus for separating solid particles from a liquid
GB2159429A (en) * 1984-06-01 1985-12-04 Tate & Lyle Plc Filter
CN108773922A (en) * 2018-07-02 2018-11-09 佛山市盟发净水科技有限公司 A kind of water purifier being convenient to clean
CN109736770A (en) * 2018-12-26 2019-05-10 核工业北京化工冶金研究院 A kind of ground-dipping uranium extraction can back-flushing filtering system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8413982D0 (en) * 1984-06-01 1984-07-04 Tate & Lyle Plc Filter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118452A (en) * 1982-04-21 1983-11-02 Permutit Boby Ltd Filtration method and apparatus
EP0096670A1 (en) * 1982-06-04 1983-12-21 Leif Ernryd Ab Apparatus for separating solid particles from a liquid
GB2159429A (en) * 1984-06-01 1985-12-04 Tate & Lyle Plc Filter
CN108773922A (en) * 2018-07-02 2018-11-09 佛山市盟发净水科技有限公司 A kind of water purifier being convenient to clean
CN109736770A (en) * 2018-12-26 2019-05-10 核工业北京化工冶金研究院 A kind of ground-dipping uranium extraction can back-flushing filtering system and method
CN109736770B (en) * 2018-12-26 2021-07-20 核工业北京化工冶金研究院 Backwashing filtering system and method for in-situ leaching uranium mining

Also Published As

Publication number Publication date
IT1030509B (en) 1979-04-10
NL6811393A (en) 1970-01-29
DE1784397A1 (en) 1972-03-23
FR2013771A1 (en) 1970-04-10
CH494053A (en) 1970-07-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee