GB1278629A - Continuous filtration process with recirculation - Google Patents
Continuous filtration process with recirculationInfo
- Publication number
- GB1278629A GB1278629A GB32436/69A GB3243669A GB1278629A GB 1278629 A GB1278629 A GB 1278629A GB 32436/69 A GB32436/69 A GB 32436/69A GB 3243669 A GB3243669 A GB 3243669A GB 1278629 A GB1278629 A GB 1278629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- turbid
- drum
- filtrate
- sector
- 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
- B01D37/00—Processes of filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
1278629 Filtration process MAGYAR TUDOMANYOS AKADEMIA 26 June 1969 [30 Aug 1968] 32436/69 Heading BID A dilute suspension is filtered at a low differential pressure through one sector of a moving filter surface thereby obtaining a turbid filtrate and a deposit of solids on the filter surface which acts as a filter aid whereby a clear filtrate is obtained by applying a higher differential pressure to a further sector, into which the filter surface moves from the first sector, the turbid filtrate being recycled to the upstream side of the filter surface. Several turbid filtrates may be obtained at progressively increasing differential pressures, all being recycled. Turbid filtrate may be concentrated, e.g. in another filter, before recycling. Fig. 5 shows a vacuum drum-travelling band type filter 62-76, from which clear filtrate is discharged from one drum sector at 71 while turbid filtrate from an upstream sector (in direction of drum rotation) is recycled at 69 to a rotary disc vacuum filter 51 - 59. This latter is arranged to obtain turbid and clear filtrates from different sectors and also to deliver reverse flow liquid to one sector to clear the disc. The turbid filtrate and thickened slurry drawn from outlet 59 are returned to filter 62 - 76. The initial feed is by inlet 51 to the disc filter, and the final cake is discharged where filter band 72 passes round roller 74 and falls on to conveyor belt 75. Filter 62 - 76 has a stirrer 64. Fig. 3 (not shown) illustrates a rotary drum vacuum filter for performing the inventive process, with provision for obtaining two filtrates, discharging cake from the drum by reverse flow air, and slurry agitator (31). Fig. 4 (not shown) illustrates a rotary drum pressure filter, with two inlets delivering suspension to different sectors of the casing around the drum. Both pressure and vacuum are applied to respective filtering sectors and a scraper removes the cake. Fig. 2 (not shown) illustrates the fixed part of a rotary valve with an adjustable partition separating turbid and clear filtrate receiving sectors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUMA001887 | 1968-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1278629A true GB1278629A (en) | 1972-06-21 |
Family
ID=10998420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32436/69A Expired GB1278629A (en) | 1968-08-30 | 1969-06-26 | Continuous filtration process with recirculation |
Country Status (2)
| Country | Link |
|---|---|
| CS (1) | CS186803B1 (en) |
| GB (1) | GB1278629A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2392704A1 (en) * | 1977-05-31 | 1978-12-29 | Shell Int Research | PROCESS FOR SEPARATING PARTICLES FROM A LIQUID CURRENT |
| US4343708A (en) * | 1980-05-28 | 1982-08-10 | Rauma-Repola Oy | Method and equipment for thickening of suspension or pulp |
| FR2564003A1 (en) * | 1984-05-14 | 1985-11-15 | Pechiney Aluminium | DEVICE FOR SUPPLYING BY ROCKING ROTARY DISC FILTERS |
| AT505247B1 (en) * | 2007-05-30 | 2009-01-15 | Andritz Ag Maschf | VACUUM-SUPPORTED DRAINAGE PROCESS AND ROTATING FILTER FOR CARRYING OUT THE DRAINAGE PROCESS |
| EP3481527A4 (en) * | 2016-08-12 | 2020-02-26 | Evoqua Water Technologies LLC | Disc filter pre-screen dual media disc filter |
| DE102018006738A1 (en) * | 2018-08-24 | 2020-02-27 | Lsi Ludwig Schleicher Ingenium Gmbh & Co. Kg | Device for dispersion adhesive waste |
| CN111977913A (en) * | 2020-09-07 | 2020-11-24 | 安徽清扬水处理设备科技有限公司 | Domestic sewage divides matter multi-stage treatment device |
| CN114588672A (en) * | 2020-12-04 | 2022-06-07 | 博凯勒有限公司 | Method and apparatus for cleaning filter cake on filter media |
| CN115212724A (en) * | 2022-07-15 | 2022-10-21 | 上海化工院环境工程有限公司 | Filtering system and method for liquid concentration |
| US12048890B2 (en) | 2023-06-21 | 2024-07-30 | Evoqua Water Technologies Llc | Disc filter pre-screen dual media disc filter |
-
1969
- 1969-06-26 GB GB32436/69A patent/GB1278629A/en not_active Expired
- 1969-08-20 CS CS6900005757A patent/CS186803B1/en unknown
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2392704A1 (en) * | 1977-05-31 | 1978-12-29 | Shell Int Research | PROCESS FOR SEPARATING PARTICLES FROM A LIQUID CURRENT |
| US4343708A (en) * | 1980-05-28 | 1982-08-10 | Rauma-Repola Oy | Method and equipment for thickening of suspension or pulp |
| FR2564003A1 (en) * | 1984-05-14 | 1985-11-15 | Pechiney Aluminium | DEVICE FOR SUPPLYING BY ROCKING ROTARY DISC FILTERS |
| EP0166663A1 (en) * | 1984-05-14 | 1986-01-02 | Aluminium Pechiney | Stream-down feeding means for rotating-disc filters |
| AT505247B1 (en) * | 2007-05-30 | 2009-01-15 | Andritz Ag Maschf | VACUUM-SUPPORTED DRAINAGE PROCESS AND ROTATING FILTER FOR CARRYING OUT THE DRAINAGE PROCESS |
| US10888807B2 (en) | 2016-08-12 | 2021-01-12 | Evoqua Water Technologies Llc | Disc filter pre-screen dual media disc filter |
| EP3481527A4 (en) * | 2016-08-12 | 2020-02-26 | Evoqua Water Technologies LLC | Disc filter pre-screen dual media disc filter |
| DE102018006738A1 (en) * | 2018-08-24 | 2020-02-27 | Lsi Ludwig Schleicher Ingenium Gmbh & Co. Kg | Device for dispersion adhesive waste |
| DE102018006738B4 (en) | 2018-08-24 | 2022-04-21 | Lsi Ludwig Schleicher Ingenium Gmbh & Co. Kg | Device for dispersion adhesive waste |
| CN111977913A (en) * | 2020-09-07 | 2020-11-24 | 安徽清扬水处理设备科技有限公司 | Domestic sewage divides matter multi-stage treatment device |
| CN111977913B (en) * | 2020-09-07 | 2021-05-04 | 安徽清扬水处理设备科技有限公司 | Domestic sewage divides matter multi-stage treatment device |
| CN114588672A (en) * | 2020-12-04 | 2022-06-07 | 博凯勒有限公司 | Method and apparatus for cleaning filter cake on filter media |
| CN115212724A (en) * | 2022-07-15 | 2022-10-21 | 上海化工院环境工程有限公司 | Filtering system and method for liquid concentration |
| CN115212724B (en) * | 2022-07-15 | 2024-01-23 | 上海化工院环境工程有限公司 | Filtration system and method for liquid concentration |
| US12048890B2 (en) | 2023-06-21 | 2024-07-30 | Evoqua Water Technologies Llc | Disc filter pre-screen dual media disc filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CS186803B1 (en) | 1978-12-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |