ATE84239T1 - Filter mit koernigem filtermaterial. - Google Patents
Filter mit koernigem filtermaterial.Info
- Publication number
- ATE84239T1 ATE84239T1 AT89303281T AT89303281T ATE84239T1 AT E84239 T1 ATE84239 T1 AT E84239T1 AT 89303281 T AT89303281 T AT 89303281T AT 89303281 T AT89303281 T AT 89303281T AT E84239 T1 ATE84239 T1 AT E84239T1
- Authority
- AT
- Austria
- Prior art keywords
- conduit
- filters
- filter material
- air
- water
- Prior art date
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
- B01D24/20—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
- B01D24/24—Downward filtration, the container having distribution or collection headers or pervious conduits
-
- 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
- B01D24/4626—Construction of spray heads specially adapted for regeneration of the filter material or for filtrate discharging
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/32—Gaseous fluid conveying
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Centrifugal Separators (AREA)
- Disintegrating Or Milling (AREA)
- Filtering Materials (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB888808133A GB8808133D0 (en) | 1988-04-07 | 1988-04-07 | Granular media filters |
EP89303281A EP0336686B1 (de) | 1988-04-07 | 1989-04-03 | Filter mit körnigem Filtermaterial |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE84239T1 true ATE84239T1 (de) | 1993-01-15 |
Family
ID=10634721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT89303281T ATE84239T1 (de) | 1988-04-07 | 1989-04-03 | Filter mit koernigem filtermaterial. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4995990A (de) |
EP (1) | EP0336686B1 (de) |
AT (1) | ATE84239T1 (de) |
DE (1) | DE68904222T2 (de) |
GB (1) | GB8808133D0 (de) |
NZ (1) | NZ228643A (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5269920A (en) * | 1991-04-03 | 1993-12-14 | The F. B. Leopold Co., Inc. | Cap system for underdrains in gravity filters |
US5089147A (en) * | 1991-05-01 | 1992-02-18 | Zimpro Passavant Environmental Systems, Inc. | Underdrain for granular medium filter |
JPH06170117A (ja) * | 1992-08-05 | 1994-06-21 | Peter J Neuspiel | 濾過装置用下部集水モジュール及び濾過装置用下部集水システム |
US5489388A (en) * | 1994-04-12 | 1996-02-06 | The F. B. Leopold Co., Inc. | Apparatus and method for improving gas backwash in lateral underdrains |
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 |
CN101247872B (zh) * | 2005-05-17 | 2014-08-27 | 塞莱默水处理齐利诺普尔有限公司 | 在使用双重隔离的过滤暗渠水道中进行反冲洗过程时用于配气和配液的装置和方法 |
US20080121580A1 (en) * | 2006-11-27 | 2008-05-29 | Weatherford/ Lamb, Inc. | Geometrically Variable Filter Underdrain Header |
US10022654B2 (en) | 2012-12-17 | 2018-07-17 | Xylem Water Solutions Zelienople Llc | Gas-liquid distribution technique for water or wastewater filters using underdrains |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1069737A (en) * | 1911-03-13 | 1913-08-12 | William A Stevenson | Method of cleaning filter-beds. |
GB304967A (en) * | 1928-02-20 | 1929-01-31 | Bamag Meguin Ag | Improvements relating to filters |
DE689443C (de) * | 1935-09-18 | 1940-03-20 | Max Kolshorn | uer Fluessigkeiten |
DE736915C (de) * | 1936-11-28 | 1943-07-01 | Bamag Meguin Ag | Rueckspuelfilterboden fuer koernige Filtermasse |
US2767852A (en) * | 1952-05-13 | 1956-10-23 | Ellila Karl Lauri | Filter apparatus |
FR1470610A (fr) * | 1966-03-03 | 1967-02-24 | Beteiligungs & Patentverw Gmbh | Fond pour filtre à liquide |
US3954620A (en) * | 1974-10-25 | 1976-05-04 | Hydrotechnic Corporation | Filtration and backwashing apparatus for use with a water filtration system |
JPS5635219Y2 (de) * | 1977-08-12 | 1981-08-19 | ||
US4707257A (en) * | 1986-05-29 | 1987-11-17 | The Graver Company | Air/water distributor underdrain |
US4753726A (en) * | 1987-03-09 | 1988-06-28 | Essef Corporation | Distributor for filters |
-
1988
- 1988-04-07 GB GB888808133A patent/GB8808133D0/en active Pending
-
1989
- 1989-04-03 EP EP89303281A patent/EP0336686B1/de not_active Expired - Lifetime
- 1989-04-03 AT AT89303281T patent/ATE84239T1/de not_active IP Right Cessation
- 1989-04-03 DE DE8989303281T patent/DE68904222T2/de not_active Expired - Fee Related
- 1989-04-06 NZ NZ228643A patent/NZ228643A/xx unknown
- 1989-04-06 US US07/334,716 patent/US4995990A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0336686A1 (de) | 1989-10-11 |
US4995990A (en) | 1991-02-26 |
DE68904222D1 (de) | 1993-02-18 |
GB8808133D0 (en) | 1988-05-11 |
NZ228643A (en) | 1990-06-26 |
EP0336686B1 (de) | 1993-01-07 |
DE68904222T2 (de) | 1993-07-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |