GB1302080A - - Google Patents
Info
- Publication number
- GB1302080A GB1302080A GB3262170A GB1302080DA GB1302080A GB 1302080 A GB1302080 A GB 1302080A GB 3262170 A GB3262170 A GB 3262170A GB 1302080D A GB1302080D A GB 1302080DA GB 1302080 A GB1302080 A GB 1302080A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bed
- valve
- water
- backwashing
- outlet
- 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
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
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
1302080 Granular bed filter PATERSON CANDY INTERNATIONAL Ltd 4 June 1971 [6 July 1970] 32621/70 Heading B1D Raw water is delivered via upper chamber 2 and pipes 7 to points below the upper surface of sand bed 8 and then filters downwards to chamber 4 and outlet 14. Coagulant may be injected into the water at 13 just before filtering, which permits a relatively high filtering flow. Periodically valves 12 and 14 are closed and the bed 8 cleaned by reverse flow of water from valve 15 to outlet 16, effecting up to 50% expansion of the bed. The volume of backwash water used in cleaning is only 1/2 to 2 times that of bed 8, the retained solids being largely flushed into the space above the bed, from which they are progressively displaced in subsequent backwashing operations. Valve 11 remains open to maintain a small raw liquid input during backwashing, and valve 19 is opened for a short time to discharge the turbid first filtrate after backwashing. Times and bed dimensions are exemplified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3262170 | 1970-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1302080A true GB1302080A (en) | 1973-01-04 |
Family
ID=10341474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3262170A Expired GB1302080A (en) | 1970-07-06 | 1970-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1302080A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2207612A (en) * | 1987-06-29 | 1989-02-08 | Max Stricker | Filter bed |
| CN105854367A (en) * | 2016-05-13 | 2016-08-17 | 上海绩优机电股份有限公司 | Filtration system and filtration method |
-
1970
- 1970-07-06 GB GB3262170A patent/GB1302080A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2207612A (en) * | 1987-06-29 | 1989-02-08 | Max Stricker | Filter bed |
| GB2207612B (en) * | 1987-06-29 | 1991-07-24 | Max Stricker | Labyrinth filter |
| CN105854367A (en) * | 2016-05-13 | 2016-08-17 | 上海绩优机电股份有限公司 | Filtration system and filtration method |
| CN105854367B (en) * | 2016-05-13 | 2019-08-30 | 上海绩优机电股份有限公司 | A kind of filtration system and filter method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |