GB1234089A - - Google Patents
Info
- Publication number
- GB1234089A GB1234089A GB1234089DA GB1234089A GB 1234089 A GB1234089 A GB 1234089A GB 1234089D A GB1234089D A GB 1234089DA GB 1234089 A GB1234089 A GB 1234089A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bed
- suspension
- filter
- admitted
- filtrate
- 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
- B01D24/48—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration
- B01D24/4869—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration by level measuring
-
- 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
- B01D24/18—Combined upward and downward filtration
- B01D24/183—Combined upward and 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
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/08—Regeneration of the filter
- B01D2201/087—Regeneration of the filter using gas bubbles, e.g. air
Abstract
1,234,089. Filter bed. CKD DUKLA NARODNI PODNIK. 18 Dec., 1968 [19 Dec., 1967; 5 Jan., 1968], No. 60200/68. Heading B1D. In the filtration of a suspension of solid particles in water through granular filter bed 29, 30 wherein filtration flow occurs downwards from the top of the bed and simultaneously upwards from the bottom, filtrate being collected at 54, all of the suspension to be treated is first introduced into a space 28 above the bed. This allows sedimentation of the largest particles and degasing to occur. Chemicals may be added to the suspension in space 28. As described, suspension flows in at 42, over weir 41 and under baffle 55. While some of it flows downwardly through bed layers 29, 30, the remainder passes through non-return valve 36, conduit 34 and nozzle floor 31 to rise up through layer 30. Filtrate is discharged at 46. To clean the filter, tank 41 is drained and scavenging air is admitted at 50, this agitating the bed. Backwash water is then admitted at 52, discharging into tank 41, ball valve 36 preventing bypassing. A closed housing filter is also disclosed, Fig. 1 (not shown).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS896267 | 1967-12-19 | ||
| CS11668 | 1968-01-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1234089A true GB1234089A (en) | 1971-06-03 |
Family
ID=25745242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1234089D Expired GB1234089A (en) | 1967-12-19 | 1968-12-18 |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT299256B (en) |
| FR (1) | FR1595434A (en) |
| GB (1) | GB1234089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53155173U (en) * | 1977-05-12 | 1978-12-06 |
-
1968
- 1968-12-18 GB GB1234089D patent/GB1234089A/en not_active Expired
- 1968-12-18 AT AT1232068A patent/AT299256B/en not_active IP Right Cessation
- 1968-12-19 FR FR1595434D patent/FR1595434A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53155173U (en) * | 1977-05-12 | 1978-12-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1815427B2 (en) | 1973-03-01 |
| FR1595434A (en) | 1970-06-08 |
| DE1815427A1 (en) | 1969-10-16 |
| AT299256B (en) | 1972-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |