WO2001000307A2 - Self cleaning filter - Google Patents
Self cleaning filter Download PDFInfo
- Publication number
- WO2001000307A2 WO2001000307A2 PCT/GB2000/002295 GB0002295W WO0100307A2 WO 2001000307 A2 WO2001000307 A2 WO 2001000307A2 GB 0002295 W GB0002295 W GB 0002295W WO 0100307 A2 WO0100307 A2 WO 0100307A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- membrane
- fibres
- tubes
- filtration apparatus
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title abstract description 8
- 239000012528 membrane Substances 0.000 claims abstract description 121
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000012466 permeate Substances 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims 1
- 229920000570 polyether Polymers 0.000 claims 1
- 125000001174 sulfone group Chemical group 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 8
- 108091006146 Channels Proteins 0.000 description 15
- 239000002245 particle Substances 0.000 description 13
- 239000007787 solid Substances 0.000 description 7
- 108090000862 Ion Channels Proteins 0.000 description 4
- 102000004310 Ion Channels Human genes 0.000 description 4
- 238000013019 agitation Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009295 crossflow filtration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/024—Hollow fibre modules with a single potted end
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/12—Specific discharge elements
- B01D2313/125—Discharge manifolds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/06—Submerged-type; Immersion type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
- B01D2321/185—Aeration
Definitions
- the present invention relates to a membrane based filtration device which is self cleaning and used under conditions of submersion in a contaminated feed stream.
- Membrane based filtration devices are well known and are commonly used for solid/ liquid separations.
- the membrane is configured into a device where the liquid from a contaminated feed stream passes through the membrane and solids are rejected at the membrane surface, principally by size exclusion.
- the space into which this liquid flows is separated by a seal from the contaminated feed and is thereby treated, the treated liquid is contained within a filter housing which is fitted with an offtake port such that the treated liquid may be extracted.
- a membrane system may be used in either dead end or cross flow modes of operation; in dead end operation liquid flow is exclusively through the membrane and is perpendicular to the membrane surface, resulting in a rapid build up of solids at the surface and consequential loss in productivity, in cross flow a liquid flow is induced tangentially to the membrane surface which has the effect of disrupting the accumulating solids and reducing the build up deposits which reduce the flow through the membrane.
- US Patent 3807565 discloses an aerobic sewage disposal system in which air flow is used to break up solids as well as to oxidise them.
- Patent Application WO 9411094 discloses a cross flow filtration arrangement in which there is an array of filter fibres in which gas bubbles flow over the fibres.
- EP 0510328 discloses an activated sludge apparatus in which a plurality of membrane modules are arranged for the treatment of wastewater in which air is diffused at a lower level than the filter membrane modules serving to create upward agitation currents of both gas and liquid phases which are used to clean the outer surfaces membrane by the action of this upward cross flow.
- the system operates in crossflow not dead end mode.
- a filtration apparatus which comprises (i) a treating tank adapted to contain the water to be treated, (ii) a plurality of spaced apart filter membrane modules arranged vertically, (iii) an air inlet port positioned below the said filter membrane modules (iv) means to blow air through the inlet port and over the surfaces of the membranes and (v) water removal means to remove treated water which has passed from the treating tank through the membranes the filter membranes being arranged in a housing and sealed at their ends, so that water permeates through the membrane modules to the water removal means.
- the membrane modules are mounted within a housing which is placed within the tank and sealed from the liquid in the tank and the membrane modules are in the form of fibres or tubes so that only liquid passing through the membranes can pass into the housing and in use the water passes from inside the fibres into the housing.
- the water passes from the tank to the inside of the fibres, through the membranes and the filtered water then passes into the housing from where the purified water is led away.
- the air is blown up over the inside of the membrane tubes or fibres and the air and the liquid turbulence caused removes any particles on the membranes which are then swept away in the stream.
- the membrane modules can be in the form of hollow fibres or tubes sealed at both ends which are immersed in the liquid to be filtered.
- a means to restrict or prevent flow of water into the fibres or tubes whilst allowing the air to pass through This can be achieved by having a narrow gap around a seal at the lower end of the tube or fibre through which gap the air can pass, but water flow is restricted or alternatively the tube is sealed and there air injectors inside the tube through which air is injected into the inside of the tube.
- the membrane modules are preferably in the form of tubes or fibres but can be in the form of flat sheets and, for a flat sheet membrane, the membrane module would comprise a membrane sealed on one or either side of a support plate with permeate off take channels formed by grooves or mesh and the flow would be through the membrane to the off take channels.
- the membrane can be in the form of flat membranes joined together to have e.g. a square or rectangular cross sectional shape.
- the water permeates from the exterior of the membrane module through the membrane to a space from where the filtered water can be removed.
- the interior of the membranes are connected to a manifold and the air passes over the exterior of the membrane surfaces and the liquid turbulence caused removes any particles on the membranes which are then swept away in the stream.
- the apparatus operates in the dead end mode unlike previous systems which hitherto have operated in cross flow mode.
- the housing containing the membrane modules is submerged in the tank so the membranes are below the water surface, the static head of water provides a pressure which is sufficient to induce flow of water through the membrane even though this is of very low pressure.
- the membrane modules are positioned outside a tank holding the water with the modules at a lower level than the water in the tank so there a static head of water acting on the membrane modules.
- the upward gas flow scours the membrane surface within the housing.
- the apparatus performs a membrane separation and there is no recirculatory flow induced and therefore the membrane modules do not suffer from the ingress of large solids into the channels where the contaminated feed-stream enters the module channel.
- large and heavy particles in the waste water settle out to the bottom of the tank and there is no water flow over the membrane surface which can pick up the particles and cause the channels to block.
- the entire membrane surface of each membrane module can be uniformly and positively cleaned by agitation currents created by the air as it passes over the membranes as well as by the air itself.
- the membranes can be in the form of hollow fibres and the diameter of the hollow fibres can be up to 30 millimetres in diameter or higher, the higher diameter hollow fibres e.g. from 5 to 20 millimetres diameter for example from 10 to 20 millimetres diameter are especially suitable.
- the membrane can be made of any filtration plastic composition which is used for filtration, such as a polyethersulphone.
- the pore size of the membrane can be in the ultrafiltration and microfiltration range. Suitable hollow fibre membranes are made by Milleniumpore Ltd. of Sunderland Enterprise Park, Sunderland SR5 2TA UK.
- the air bubble fills the fibre, tube or lumen so that as it passes up there is efficient souring of the membrane. If the tube is too small a diameter the air bubbles can get stuck by capillary or surface effects so the larger diameter tubes are preferred.
- the air bubbles In use as the air bubbles pass up the fibre, tube or lumen and they displace water and scour the inner surface of the lumen; when the air bubbles reach the top of the lumen they leave and water then flows back into the space left by the air bubble.
- the membrane can then be in substantial equilibrium with no cross flow of water but with the passage of water through the membrane and the surface of the membrane being scoured. This enables there to be long runs without blocking.
- the lumen can be backflushed to clear of any particles not removed.
- the air can be passed over the tubes from a diffuser which generates air bubbles over an area sufficient so that air flows substantially uniformly over all the tubes. When there are a plurality of tubes particularly when there are larger numbers of tubes in a module e.g. more than five, it can be difficult for there to be a uniform flow of air over all the tubes and if needed there can be a plurality of diffusers or air injectors so that there is a more uniform flow of air and hence cleaning performance for all the
- tubular membranes will depend on the size of the unit and the application in one type of unit the number can range from fifty to several hundred, but this is not critical.
- Figure 1 is a sectional view showing a first embodiment of the invention
- Figure 2 is a sectional view showing a second embodiment of the invention
- Figure 3 is a schematic view of one form of the apparatus
- Figure 4 is a sectional view of a third embodiment of the invention and
- Figure 5 shows schematically bubbles inside a tube
- a treating tank (1) containing the water to be filtered has a housing (2) in which there is a filter unit which comprises a plurality of membrane filter modules (3) which are tubes of diameter 10 millimetres made of an ultrafiltration polysulphone membrane.
- the tubes are vertically arranged within the housing (2) and the interspatial space (9) between the modules at the top of the device is the channel for feed entry.
- air diffuser (4) through which air can be fed from air inlet (8) to the exterior of filter elements in the modules (3) and through the passages (10) between the membranes.
- the tank (1) is filled with the waste water to be purified to a level above the membrane modules. Purified water permeates through the membrane modules (3) and is led off.
- the air diffuser (4) is activated and air bubbles bubble up through the spaces (10) between the membranes and which provides the agitation for cleaning the membrane surface.
- the flow is from the outside of the module to the inner lumen channel (3) commonly manifolded from each module.
- the filtration occurs from the interior of the membrane module through the membrane to void space within the housing which is the filtrate offtake channel.
- the filter unit comprises a plurality of membrane filter modules (11) of the same type as in fig. 1 positioned within the treating tank (1) and which are vertically arranged within the casing (2), an encapsulating seal (12) is effected between the feed and filtrate channels.
- Air is delivered at a diffuser (4) through air inlet (15) which provides the agitation for cleaning the membrane surface.
- the interior of the tubular membrane lumens are the channels for feed entry of the waste water and there is take off (16) which is the permeate outlet connection permeate .
- the tank (1) is filled with the waste water to be purified to a level above the membrane modules.
- the water permeates through the membrane from the inside of the modules (11) to the spaces between the membranes (17) where it is led away through outlet (16).
- the module would comprise of two membrane sheets sealed either side of a support frame.
- the air from the diffuser (4) passes through the interior of the membranes (11) and cleans the membrane surface.
- a treatment tank (20) contains the waste water to be treated, housing (21) contains 10 millimetre diameter hollow polysulphone tubes (22) of the same type as in fig. 1 and the space between their ends are sealed. There is an air inlet (23) connected to bubble diffuser (24). The interior of tubes (22) are open to the water in the tank and there is a water outlet (25) connected to the housing.
- the tank (20) is filled to a level above the membranes and the water permeates from the inside of the tubes (22) through the membrane to the void space in housing (21). Air is fed through inlet (23) to diffuser (24) where the air bubbles up through membrane channels.
- this shows a membrane module as in fig. 2 but outside tank (30) containing the water to be filtered.
- the water from the tank is connected to the housing (31) containing the tubes through connections (32) and (33).
- fig. 5 which shows an air bubble (35) passing up membrane tube (36) in a stream of water
- fig. 5b which shows an embodiment of the invention
- the air bubbles then can keep the tube surface clear and there is less chance of particles being brought into contact with the tube surface by the flow of water.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU55463/00A AU5546300A (en) | 1999-06-25 | 2000-06-23 | Self cleaning filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9914854.6A GB9914854D0 (en) | 1999-06-25 | 1999-06-25 | Self cleaning membrane device for filtration used in submerged operation |
GB9914854.6 | 1999-06-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001000307A2 true WO2001000307A2 (en) | 2001-01-04 |
WO2001000307A3 WO2001000307A3 (en) | 2001-07-05 |
Family
ID=10856039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/002295 WO2001000307A2 (en) | 1999-06-25 | 2000-06-23 | Self cleaning filter |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU5546300A (en) |
GB (1) | GB9914854D0 (en) |
WO (1) | WO2001000307A2 (en) |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1433511A1 (en) * | 2002-12-19 | 2004-06-30 | Utisol Technologies AG | Filter device |
EP1466658A1 (en) * | 2003-04-11 | 2004-10-13 | UTISOL Technologies AG | Device and method for aeration of membrane filters |
EP1551535A1 (en) * | 2002-10-10 | 2005-07-13 | U.S. Filter Wastewater Group, Inc. | Backwash method |
DE102004009886A1 (en) * | 2004-02-26 | 2005-09-15 | Hans Huber Ag Maschinen- Und Anlagenbau | Process and assembly to treat sewage sludge in an assembly that separates sludge and filtrate |
WO2006058902A2 (en) * | 2004-12-01 | 2006-06-08 | Va Tech Wabag Gmbh | Filtering system for water and waste water |
DE102005018886A1 (en) * | 2005-04-22 | 2006-11-02 | Pfleiderer Water Systems Gmbh | Apparatus and method for separating solids and liquids |
WO2007138342A1 (en) * | 2006-05-25 | 2007-12-06 | The Boc Group Limited | Treatment of aqueous liquid |
WO2008030185A1 (en) * | 2006-09-08 | 2008-03-13 | Ultra-Flo Pte Ltd | Filter renewal system and a method thereof |
WO2008028626A1 (en) * | 2006-09-06 | 2008-03-13 | Berghof Filtrations- Und Anlagentechnik Gmbh & Co. Kg | Filtration system comprising a ventilation system |
AU2003266847B2 (en) * | 2002-10-10 | 2008-09-11 | Evoqua Water Technologies Llc | Backwash method |
US8268176B2 (en) | 2003-08-29 | 2012-09-18 | Siemens Industry, Inc. | Backwash |
US8287743B2 (en) | 2007-05-29 | 2012-10-16 | Siemens Industry, Inc. | Membrane cleaning with pulsed airlift pump |
US8293098B2 (en) | 2006-10-24 | 2012-10-23 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
US8318028B2 (en) | 2007-04-02 | 2012-11-27 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
US8377305B2 (en) | 2004-09-15 | 2013-02-19 | Siemens Industry, Inc. | Continuously variable aeration |
US8382981B2 (en) | 2008-07-24 | 2013-02-26 | Siemens Industry, Inc. | Frame system for membrane filtration modules |
US8496828B2 (en) | 2004-12-24 | 2013-07-30 | Siemens Industry, Inc. | Cleaning in membrane filtration systems |
US8506806B2 (en) | 2004-09-14 | 2013-08-13 | Siemens Industry, Inc. | Methods and apparatus for removing solids from a membrane module |
US8512568B2 (en) | 2001-08-09 | 2013-08-20 | Siemens Industry, Inc. | Method of cleaning membrane modules |
US8518256B2 (en) | 2001-04-04 | 2013-08-27 | Siemens Industry, Inc. | Membrane module |
US8758621B2 (en) | 2004-03-26 | 2014-06-24 | Evoqua Water Technologies Llc | Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis |
US8758622B2 (en) | 2004-12-24 | 2014-06-24 | Evoqua Water Technologies Llc | Simple gas scouring method and apparatus |
US8790515B2 (en) | 2004-09-07 | 2014-07-29 | Evoqua Water Technologies Llc | Reduction of backwash liquid waste |
US8808540B2 (en) | 2003-11-14 | 2014-08-19 | Evoqua Water Technologies Llc | Module cleaning method |
US8894858B1 (en) | 2005-08-22 | 2014-11-25 | Evoqua Water Technologies Llc | Method and assembly for water filtration using a tube manifold to minimize backwash |
US8956464B2 (en) | 2009-06-11 | 2015-02-17 | Evoqua Water Technologies Llc | Method of cleaning membranes |
US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
WO2015123300A1 (en) * | 2014-02-14 | 2015-08-20 | College Of William And Mary | Mass transfer device and system generating vortices for particle suspension, concentration, and transport |
US9533261B2 (en) | 2012-06-28 | 2017-01-03 | Evoqua Water Technologies Llc | Potting method |
US9604166B2 (en) | 2011-09-30 | 2017-03-28 | Evoqua Water Technologies Llc | Manifold arrangement |
US9675938B2 (en) | 2005-04-29 | 2017-06-13 | Evoqua Water Technologies Llc | Chemical clean for membrane filter |
US9764289B2 (en) | 2012-09-26 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane securement device |
US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
US9914097B2 (en) | 2010-04-30 | 2018-03-13 | Evoqua Water Technologies Llc | Fluid flow distribution device |
US9925499B2 (en) | 2011-09-30 | 2018-03-27 | Evoqua Water Technologies Llc | Isolation valve with seal for end cap of a filtration system |
US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
US10427102B2 (en) | 2013-10-02 | 2019-10-01 | Evoqua Water Technologies Llc | Method and device for repairing a membrane filtration module |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0662341A1 (en) * | 1994-01-07 | 1995-07-12 | Kubota Corporation | Filtration membrane module |
JPH08131784A (en) * | 1994-11-10 | 1996-05-28 | Nitto Denko Corp | Membrane separation device |
EP0734758A1 (en) * | 1995-03-31 | 1996-10-02 | Mitsui Petrochemical Industries, Ltd. | Membrane device having means for charging the membranes |
JPH09141066A (en) * | 1995-11-21 | 1997-06-03 | Kubota Corp | Dipping type membrane separator |
JPH1085565A (en) * | 1996-09-19 | 1998-04-07 | Yamada Kogyo Kk | Membrane separator |
US5783083A (en) * | 1995-08-11 | 1998-07-21 | Zenon Environmental Inc. | Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces |
JPH11156161A (en) * | 1997-11-28 | 1999-06-15 | Kanegafuchi Chem Ind Co Ltd | Operation method of hollow fiber membrane module |
JPH11314097A (en) * | 1998-05-06 | 1999-11-16 | Kubota Corp | Operation of membrane separator |
-
1999
- 1999-06-25 GB GBGB9914854.6A patent/GB9914854D0/en not_active Ceased
-
2000
- 2000-06-23 AU AU55463/00A patent/AU5546300A/en not_active Abandoned
- 2000-06-23 WO PCT/GB2000/002295 patent/WO2001000307A2/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0662341A1 (en) * | 1994-01-07 | 1995-07-12 | Kubota Corporation | Filtration membrane module |
JPH08131784A (en) * | 1994-11-10 | 1996-05-28 | Nitto Denko Corp | Membrane separation device |
EP0734758A1 (en) * | 1995-03-31 | 1996-10-02 | Mitsui Petrochemical Industries, Ltd. | Membrane device having means for charging the membranes |
US5783083A (en) * | 1995-08-11 | 1998-07-21 | Zenon Environmental Inc. | Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces |
JPH09141066A (en) * | 1995-11-21 | 1997-06-03 | Kubota Corp | Dipping type membrane separator |
JPH1085565A (en) * | 1996-09-19 | 1998-04-07 | Yamada Kogyo Kk | Membrane separator |
JPH11156161A (en) * | 1997-11-28 | 1999-06-15 | Kanegafuchi Chem Ind Co Ltd | Operation method of hollow fiber membrane module |
JPH11314097A (en) * | 1998-05-06 | 1999-11-16 | Kubota Corp | Operation of membrane separator |
Non-Patent Citations (5)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 09, 30 September 1996 (1996-09-30) & JP 08 131784 A (NITTO DENKO CORP), 28 May 1996 (1996-05-28) * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10, 31 October 1997 (1997-10-31) & JP 09 141066 A (KUBOTA CORP), 3 June 1997 (1997-06-03) * |
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 09, 31 July 1998 (1998-07-31) & JP 10 085565 A (YAMADA KOGYO KK), 7 April 1998 (1998-04-07) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11, 30 September 1999 (1999-09-30) & JP 11 156161 A (KANEGAFUCHI CHEM IND CO LTD), 15 June 1999 (1999-06-15) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02, 29 February 2000 (2000-02-29) & JP 11 314097 A (KUBOTA CORP), 16 November 1999 (1999-11-16) * |
Cited By (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8518256B2 (en) | 2001-04-04 | 2013-08-27 | Siemens Industry, Inc. | Membrane module |
US8512568B2 (en) | 2001-08-09 | 2013-08-20 | Siemens Industry, Inc. | Method of cleaning membrane modules |
EP1551535A1 (en) * | 2002-10-10 | 2005-07-13 | U.S. Filter Wastewater Group, Inc. | Backwash method |
US7938966B2 (en) * | 2002-10-10 | 2011-05-10 | Siemens Water Technologies Corp. | Backwash method |
EP1551535A4 (en) * | 2002-10-10 | 2007-04-25 | Siemens Water Tech Corp | Backwash method |
AU2003266847B2 (en) * | 2002-10-10 | 2008-09-11 | Evoqua Water Technologies Llc | Backwash method |
EP1433511A1 (en) * | 2002-12-19 | 2004-06-30 | Utisol Technologies AG | Filter device |
AU2010219360B2 (en) * | 2002-12-19 | 2011-07-07 | Utisol Technologies Ag | Filter device |
EP1466658A1 (en) * | 2003-04-11 | 2004-10-13 | UTISOL Technologies AG | Device and method for aeration of membrane filters |
US8268176B2 (en) | 2003-08-29 | 2012-09-18 | Siemens Industry, Inc. | Backwash |
US8808540B2 (en) | 2003-11-14 | 2014-08-19 | Evoqua Water Technologies Llc | Module cleaning method |
DE102004009886A1 (en) * | 2004-02-26 | 2005-09-15 | Hans Huber Ag Maschinen- Und Anlagenbau | Process and assembly to treat sewage sludge in an assembly that separates sludge and filtrate |
US8758621B2 (en) | 2004-03-26 | 2014-06-24 | Evoqua Water Technologies Llc | Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis |
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US8377305B2 (en) | 2004-09-15 | 2013-02-19 | Siemens Industry, Inc. | Continuously variable aeration |
WO2006058902A2 (en) * | 2004-12-01 | 2006-06-08 | Va Tech Wabag Gmbh | Filtering system for water and waste water |
WO2006058902A3 (en) * | 2004-12-01 | 2006-08-03 | Va Tech Wabag Gmbh | Filtering system for water and waste water |
US8496828B2 (en) | 2004-12-24 | 2013-07-30 | Siemens Industry, Inc. | Cleaning in membrane filtration systems |
US8758622B2 (en) | 2004-12-24 | 2014-06-24 | Evoqua Water Technologies Llc | Simple gas scouring method and apparatus |
DE102005018886A1 (en) * | 2005-04-22 | 2006-11-02 | Pfleiderer Water Systems Gmbh | Apparatus and method for separating solids and liquids |
US9675938B2 (en) | 2005-04-29 | 2017-06-13 | Evoqua Water Technologies Llc | Chemical clean for membrane filter |
US8894858B1 (en) | 2005-08-22 | 2014-11-25 | Evoqua Water Technologies Llc | Method and assembly for water filtration using a tube manifold to minimize backwash |
WO2007138342A1 (en) * | 2006-05-25 | 2007-12-06 | The Boc Group Limited | Treatment of aqueous liquid |
US8470169B2 (en) | 2006-05-25 | 2013-06-25 | The Boc Group Limited | Apparatus for treatment of aqueous liquid |
AU2007266827B2 (en) * | 2006-05-25 | 2012-06-07 | The Boc Group Limited | Treatment of aqueous liquid |
WO2008028626A1 (en) * | 2006-09-06 | 2008-03-13 | Berghof Filtrations- Und Anlagentechnik Gmbh & Co. Kg | Filtration system comprising a ventilation system |
WO2008030185A1 (en) * | 2006-09-08 | 2008-03-13 | Ultra-Flo Pte Ltd | Filter renewal system and a method thereof |
US8293098B2 (en) | 2006-10-24 | 2012-10-23 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
US8623202B2 (en) | 2007-04-02 | 2014-01-07 | Siemens Water Technologies Llc | Infiltration/inflow control for membrane bioreactor |
US8318028B2 (en) | 2007-04-02 | 2012-11-27 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
US9206057B2 (en) | 2007-05-29 | 2015-12-08 | Evoqua Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
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US8372276B2 (en) | 2007-05-29 | 2013-02-12 | Siemens Industry, Inc. | Membrane cleaning with pulsed airlift pump |
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US8287743B2 (en) | 2007-05-29 | 2012-10-16 | Siemens Industry, Inc. | Membrane cleaning with pulsed airlift pump |
US9023206B2 (en) | 2008-07-24 | 2015-05-05 | Evoqua Water Technologies Llc | Frame system for membrane filtration modules |
US8382981B2 (en) | 2008-07-24 | 2013-02-26 | Siemens Industry, Inc. | Frame system for membrane filtration modules |
US8956464B2 (en) | 2009-06-11 | 2015-02-17 | Evoqua Water Technologies Llc | Method of cleaning membranes |
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US9914097B2 (en) | 2010-04-30 | 2018-03-13 | Evoqua Water Technologies Llc | Fluid flow distribution device |
US9630147B2 (en) | 2010-09-24 | 2017-04-25 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
US10391432B2 (en) | 2011-09-30 | 2019-08-27 | Evoqua Water Technologies Llc | Manifold arrangement |
US9604166B2 (en) | 2011-09-30 | 2017-03-28 | Evoqua Water Technologies Llc | Manifold arrangement |
US11065569B2 (en) | 2011-09-30 | 2021-07-20 | Rohm And Haas Electronic Materials Singapore Pte. Ltd. | Manifold arrangement |
US9925499B2 (en) | 2011-09-30 | 2018-03-27 | Evoqua Water Technologies Llc | Isolation valve with seal for end cap of a filtration system |
US9533261B2 (en) | 2012-06-28 | 2017-01-03 | Evoqua Water Technologies Llc | Potting method |
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US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
US10427102B2 (en) | 2013-10-02 | 2019-10-01 | Evoqua Water Technologies Llc | Method and device for repairing a membrane filtration module |
US11173453B2 (en) | 2013-10-02 | 2021-11-16 | Rohm And Haas Electronic Materials Singapores | Method and device for repairing a membrane filtration module |
WO2015123300A1 (en) * | 2014-02-14 | 2015-08-20 | College Of William And Mary | Mass transfer device and system generating vortices for particle suspension, concentration, and transport |
US9480951B2 (en) | 2014-02-14 | 2016-11-01 | College Of William And Mary | Mass transfer device and system generating vortices for particle suspension, concentration, and transport |
US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
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Publication number | Publication date |
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WO2001000307A3 (en) | 2001-07-05 |
GB9914854D0 (en) | 1999-08-25 |
AU5546300A (en) | 2001-01-31 |
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