CA2262626A1 - Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in flat bottom flumes - Google Patents
Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in flat bottom flumesInfo
- Publication number
- CA2262626A1 CA2262626A1 CA002262626A CA2262626A CA2262626A1 CA 2262626 A1 CA2262626 A1 CA 2262626A1 CA 002262626 A CA002262626 A CA 002262626A CA 2262626 A CA2262626 A CA 2262626A CA 2262626 A1 CA2262626 A1 CA 2262626A1
- Authority
- CA
- Canada
- Prior art keywords
- gas
- liquid
- baffle
- backwash
- flume
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title abstract 7
- 238000005192 partition Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
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
- B01D24/4631—Counter-current flushing, e.g. by air
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
A concurrent backwash distribution apparatus for a filter (11) having a filter tank (13) and a plurality of underdrain laterals (24) includes a baffle (10) positioned in a common main conduit (12) to define a secondary flume (14) between the baffle (10) and the underdrain laterals (24). The secondary flume (14) is in fluid communication with common main conduit (12) and the underdrain laterals (24). The baffle (10) has at least one flume liquid metering orifice (16) located adjacent a bottom of the baffle (10) so that it is below a gas liquid interface (23) in the secondary flume (14) during concurrent gas/liquid backwash operations. A flow distribution plate (18) is positioned between the secondary flume (14) and the underdrain laterals (24), the flow distribution plate (18) having at least one liquid metering orifice (22) and at least one gas metering orifice (20). The baffle (10) may be an upstanding partition (26) or an L-shaped partition (30). The baffle (10) creates adequate room for low velocity flow of backwash liquid in flat bottom flumes, while at the same time providing clearance for flow of backwash gas.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2311696P | 1996-07-31 | 1996-07-31 | |
US60/023,116 | 1996-07-31 | ||
PCT/US1997/013512 WO1998004332A1 (en) | 1996-07-31 | 1997-07-31 | Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in flat bottom flumes |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2262626A1 true CA2262626A1 (en) | 1998-02-05 |
CA2262626C CA2262626C (en) | 2005-07-26 |
Family
ID=21813223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002262626A Expired - Lifetime CA2262626C (en) | 1996-07-31 | 1997-07-31 | Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in flat bottom flumes |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3743697A (en) |
CA (1) | CA2262626C (en) |
WO (1) | WO1998004332A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7063787B2 (en) | 2001-06-06 | 2006-06-20 | Usfilter Corporation | Filter media retaining cap and hold down grid |
US6991726B2 (en) | 2002-07-01 | 2006-01-31 | Usfilter Corporation | Filter having a media retaining plate |
US6830684B2 (en) | 2002-07-10 | 2004-12-14 | U.S. Filter Corporation | Integrated liquid and gas distribution device for underdrain block laterals |
WO2006130341A2 (en) * | 2005-05-17 | 2006-12-07 | The F.B. Leopold Company Inc. | Apparatus and method for distributing gas and liquid during backwash in filter underdrain flumes using dual separation |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5068034A (en) * | 1990-05-03 | 1991-11-26 | Unilift Corporation | Purification underdrain with means to compensate for flow and pressure differences between laterals |
US5328608A (en) * | 1992-05-27 | 1994-07-12 | The F.B. Leopold Co., Inc. | Mutli-lateral filter underdrain block |
-
1997
- 1997-07-31 AU AU37436/97A patent/AU3743697A/en not_active Abandoned
- 1997-07-31 WO PCT/US1997/013512 patent/WO1998004332A1/en active Application Filing
- 1997-07-31 CA CA002262626A patent/CA2262626C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU3743697A (en) | 1998-02-20 |
CA2262626C (en) | 2005-07-26 |
WO1998004332A1 (en) | 1998-02-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2260543A1 (en) | Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes | |
CA2187515A1 (en) | Apparatus and method for improving gas backwash in lateral underdrains | |
EP0523293A1 (en) | Filtration of liquids | |
TW346406B (en) | Device (DME) for distributing, mixing, injecting, and/or removing several fluids | |
CA2262030A1 (en) | Filtering device | |
CA2073699A1 (en) | Flume distribution system with removable block | |
MX9606442A (en) | Liquid distributor for columns. | |
CA2156590A1 (en) | Distributor device for multi-bed downflow reactors | |
CA2294132A1 (en) | Methods and apparatus for sludge collection | |
CA2062978A1 (en) | Self-cleaning filter for fluid distribution systems | |
CA2262626A1 (en) | Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in flat bottom flumes | |
US6063269A (en) | Filtration apparatus for a hydraulic system | |
US5512174A (en) | Filtering device for the clarification of liquids | |
CA2193980A1 (en) | Suppression of slug flow in a multi-phase fluid stream | |
WO2006130341A3 (en) | Apparatus and method for distributing gas and liquid during backwash in filter underdrain flumes using dual separation | |
JPH0144854B2 (en) | ||
RU1794794C (en) | Device for cleaning shipboard settling tank | |
JPS5931289Y2 (en) | Lower water collection and distribution equipment for rapid filtration ponds | |
SU1242580A1 (en) | Surface water arrangement | |
US4230153A (en) | Back pressure system for slurry pipeline | |
JPS5639362A (en) | Change-over device for flow route of piping | |
FI112520B (en) | Flow divider for vessels used in sewage works, has inlet connected to multiple outlets | |
RU3520U1 (en) | DROPPER | |
GB2189712A (en) | Water filtration installation | |
JPS5742330A (en) | Liquid distributor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20170731 |