Of Particulate Bed (e.g., Fluidized Or Moving Bed, Etc.) Patents (Class 210/786)
  • Publication number: 20140284283
    Abstract: A method and an apparatus for treating a liquid containing impurities may include a filtering chamber configured to permit granular media to interact with liquid containing impurities, thereby removing impurities from the liquid to produce filtrate; a filtrate section for receiving the filtrate; a gas supplying system for delivering gas to the granular media in the filtering chamber for transport of a portion of the granular media to a granular media washer; a reject section in fluid communication with the granular media washer for receiving a reject mixture comprising liquid and impurities from the granular media washer; and a control unit that is configured to determine whether the portion of the granular media is being transported properly based on an amount of reject mixture in the reject section.
    Type: Application
    Filed: February 20, 2014
    Publication date: September 25, 2014
    Applicant: Parkson Corporation
    Inventors: Adrian STRENG, Brett H. Boyd
  • Patent number: 8778190
    Abstract: The invention relates to a method for purifying wastewater loaded with nitrogen-containing compounds, wherein the wastewater loaded with nitrogen-containing compounds is reacted with a smectic sheet silicate, wherein a clay material loaded with nitrogen-containing compounds is obtained, and the clay material loaded with nitrogen-containing compounds is separated off, wherein purified wastewater is obtained.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: July 15, 2014
    Assignee: Süd-Chemie IP GmbH & Co. KG
    Inventors: Friedrich Ruf, Gerhard Kummer, Manfred Frauenrath, Johannes Lautenschlager, Gotz Burgfels
  • Patent number: 8771521
    Abstract: A method and a computer program product perform a backwash process, which facilitates a reduction in a reject rate associated with a water treatment tank. If a backwash process is needed, an upper burst solenoid is operated to start an airlift flow in a first airlift path at a first position and at a first point in time, at a bottom portion of the water treatment tank, and a lower burst solenoid is operated to start an airlift flow in a second airlift path at a second position and at a second point in time. The second position is below the first position and the second point in time is after the first point in time. The airlift flow in the first and second airlift paths enables suitable water flow within the water treatment tank.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: July 8, 2014
    Assignee: Parkson Corporation
    Inventors: Brett H. Boyd, Russell L. Cook, Adrian Streng
  • Patent number: 8658031
    Abstract: A method and an apparatus for treating a liquid containing impurities may include a filtering chamber configured to permit granular media to interact with liquid containing impurities, thereby removing impurities from the liquid to produce filtrate; a filtrate section for receiving the filtrate; a gas supplying system for delivering gas to the granular media in the filtering chamber for transport of a portion of the granular media to a granular media washer; a reject section in fluid communication with the granular media washer for receiving a reject mixture comprising liquid and impurities from the granular media washer; and a control unit that is configured to determine whether the portion of the granular media is being transported properly based on an amount of reject mixture in the reject section.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: February 25, 2014
    Assignee: Parkson Corporation
    Inventors: Adrian Streng, Brett H. Boyd
  • Patent number: 8568597
    Abstract: A process is disclosed for purification of silicon source material including trichlorosilane. First, the silicon source material in liquid state with impurities vapor and the other chlorosilane or silane are passing a first high gravity rotating packed bed with porous metal, at a temperature lower than the boiling point of the silicon source material, the impurities vapor and the other chlorosilane or silane are separated from the liquid silicon source material; second, the silicon source material in liquid state is fed to a second high gravity rotating packed bed, oxygen is also fed to the second high gravity rotating packed bed to form impurity-containing siloxane complexes with higher boiling point. Finally distilling to remove the impurity-containing siloxane complexes from the silicon source material.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: October 29, 2013
    Inventors: Shyang Su, Yi-Heng Su, Michael Vukelic
  • Patent number: 8496832
    Abstract: A process for wastewater treatment, comprising aerating and mixing wastewater containing organic and/or inorganic pollutants and bentonite clay in a vessel at a first temperature and for a time sufficient to reduce the concentration of said pollutants, raising the temperature of said mixture to at least 100° C. to evaporate water vapor, passing said water vapor through a fritted membrane and into a condenser, and collecting condensed water.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 30, 2013
    Assignee: King Abdulaziz City for Science and Technology
    Inventor: Saad A. Al-Jlil
  • Patent number: 8496838
    Abstract: The invention is directed to an industrial process, for instance a process for the separation of compounds from a fluid mixture or a process for cleaning parts of equipment, using movable particles, as well as to said particles per se, which may be used in such processes.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: July 30, 2013
    Assignee: Nederlandse Organisatie voor toegepast-natuurwtenschappelijk Onderzoek TNO
    Inventors: Jan Hendrik Hanemaaijer, Renze Tjeert Van Houten, Earl Lawrence Vincent Goetheer
  • Patent number: 8480785
    Abstract: It is an object to provide a method and an apparatus for recovering indium, the method and apparatus ensuring that it is unnecessary to recover indium in the form of indium hydroxide, indium can be recovered easily by a filter or the like without handling inferiors and also, the recovery rate of indium is greatly improved. The method includes immersing a precipitation-inducing metal which includes zinc and is made into the form of a solid such that any part coming into view three-dimensionally has a longitudinal length of 2.5 to 10 mm in an etching waste solution containing at least indium and ferric chloride and allowed to stand, thereby allowing indium contained in the etching waste solution to precipitate on the surface of the precipitation-inducing metal based on a difference in ionization tendency between zinc and indium, and detaching the indium precipitated on the surface of the precipitation-inducing metal to recover it.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: July 9, 2013
    Assignees: Sharp Kabushiki Kaisha, Kobelco Eco-Solutions Co., Ltd.
    Inventors: Takeo Miki, Tamotsu Sugimoto, Eiichi Sahashi, Takamichi Honma, Tomoharu Maeseto
  • Patent number: 8454841
    Abstract: A filter for removing at least some impurities (e.g. foreign matter of any nature including a solid, a liquid or a gas) from water or wastewater. A vibrator operably associated with at least a portion of the filter for imparting a vibrational force to enhance any one or more of numerous aspects of the filtration process including: (i) installation of the filter and/or various components thereof; (ii) servicing of the filter and/or components thereof; and, (iii) operation of the filter during a filtration cycle and a cleaning cycle.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: June 4, 2013
    Assignee: Roberts Marketing DE, Inc.
    Inventor: R. Lee Roberts
  • Publication number: 20130037489
    Abstract: The present invention is a gravity continuously operating filtration system for separating impurities from liquids. The liquid flows upward through a bed of filter media in a vessel and filtered liquid (filtrate) is collected above the top of the bed. Dirtied filter media are withdrawn from the bottom of the vessel and returned to the vessel from the top. The dirtied filter media are first conveyed to a separation device by which the bulk of solids are separated from the filter media. The reject liquid from the separation device is discharged as waste. The filter media are then cleaned in a spiral wash path and are then returned back to the system. The described cleaning process is far more effective than other similar filtration systems. Majority of essential components are located outside of the vessel and are convenient to access for maintenance and inspection.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 14, 2013
    Inventor: Hua Jiang
  • Publication number: 20130020266
    Abstract: A process water filtration system includes a vessel (12) containing filter media units (14). Water jets (30 and 32) create movement of the filter media units (14).
    Type: Application
    Filed: February 27, 2012
    Publication date: January 24, 2013
    Inventors: Michael B. Timmons, John L. Holder
  • Publication number: 20120312758
    Abstract: Water filters require filter media which may be a substantially single structure such as open-cell foam, or comprised of a plurality of relatively small elements. The present invention provides composite mechanical water filter media for use in mechanical water filters comprising a plurality of first elements having a first shape and a plurality of second elements having a second shape, the first and second shapes being substantially different from one another, the elements being arranged to interlock with one another.
    Type: Application
    Filed: March 11, 2011
    Publication date: December 13, 2012
    Applicant: INTERPET LTD
    Inventor: Andrew Paxton
  • Publication number: 20120261357
    Abstract: A method and a plant for the treatment of water or wastewater, having impurities therein by filtration through two granular media filter stages (1, 2) of the moving bed type operated in series, comprising: feeding of said water/wastewater as a first influent to first stage granular media filters; filtration of said first influent in said first stage granular media filters to produce a first effluent; feeding said first effluent as a second influent to second stage granular media filters; and filtration of said second influent in said second stage granular media filters to produce a second effluent; wherein said second stage granular media filters (2) are operated with intermittent washing of the granular filter media.
    Type: Application
    Filed: November 11, 2009
    Publication date: October 18, 2012
    Inventor: Hans F. Larsson
  • Publication number: 20120223025
    Abstract: A simple, efficient apparatus and method for separating layers of immiscible or partially miscible liquids useful in methods of high-throughput combinatorial organic synthesis or parallel extraction of large libraries or megaarrays of organic compounds is disclosed. The apparatus and method are useful, whether as part of an automated, robotic or manual system for combinatorial organic synthesis or purification (extraction). In a preferred embodiment, an apparatus and method for separating layers of immiscible or partially miscible liquids compatible with microtiter plate type array(s) of reaction vessels is disclosed. Another application of centrifugation based liquid removal was found for washing the plates in biological assays or synthesis on modified substrates.
    Type: Application
    Filed: May 11, 2012
    Publication date: September 6, 2012
    Inventor: Michal Lebl
  • Patent number: 8152998
    Abstract: A liquid filtering apparatus is placed in a vessel having a bed of filtration material, the bed comprising at least two different sizes of filter media wherein the filtration material is stratified using upper and lower spaced apart inverted cones so that the unfiltered liquid first contacts coarse grained filtration material and then finer grained filtration material. The apparatus includes an intake for introducing unfiltered liquid that includes a washbox, an airlifting tube extending from the washbox and including an intake end and means for introducing a primary gas to the airlifting tube, the airlifting tube passing through a central pipe, which extends from just below the washbox to a position just above the intake end. The apparatus is devoid of screen cartridges. Methods of filtering and cleaning the filtration material are also disclosed.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: April 10, 2012
    Assignee: Ashbrook Simon-Hartley, LP
    Inventors: Yongming Xia, Jeffrey S. Devine
  • Publication number: 20110278238
    Abstract: A filter for removing at least some impurities (e.g. foreign matter of any nature including a solid, a liquid or a gas) from water or wastewater. A vibrator operably associated with at least a portion of the filter for imparting a vibrational force to enhance any one or more of numerous aspects of the filtration process including: (i) installation of the filter and/or various components thereof; (ii) servicing of the filter and/or components thereof; and, (iii) operation of the filter during a filtration cycle and a cleaning cycle.
    Type: Application
    Filed: December 21, 2010
    Publication date: November 17, 2011
    Inventor: R. Lee Roberts
  • Publication number: 20110247988
    Abstract: A simple, efficient apparatus and method for separating layers of immiscible or partially miscible liquids useful in methods of high-throughput combinatorial organic synthesis or parallel extraction of large libraries or megaarrays of organic compounds is disclosed. The apparatus and method are useful, whether as part of an automated, robotic or manual system for combinatorial organic synthesis or purification (extraction). In a preferred embodiment, an apparatus and method for separating layers of immiscible or partially miscible liquids compatible with microtiter plate type array(s) of reaction vessels is disclosed. Another application of centrifugation based liquid removal was found for washing the plates in biological assays or synthesis on modified substrates.
    Type: Application
    Filed: June 24, 2011
    Publication date: October 13, 2011
    Inventor: Michal Lebl
  • Patent number: 8012359
    Abstract: A radial or crossflow media filter comprising a housing such as a vessel or tank (1), the housing containing filter media (9), a contaminated flow inlet (2) and a discharge outlet (8), the inlet comprising a manifold (5) situated within the housing, the manifold (5) having flow outlets (6) which are directed laterally, away from the discharge outlet (8). The flow inlet may comprise a substantially vertically aligned elongate tubular manifold (5) with a plurality of flow distribution holes or slots disposed along its length. Furthermore, the discharge outlet (8) may be accessed through a chamber within the housing which contains a second filter media (11) which is of larger average particle size than the first filter media (9).
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: September 6, 2011
    Assignee: KCC Group Limited
    Inventor: David John Parkinson
  • Publication number: 20110024369
    Abstract: The present invention relates to a device for cleaning a fluid, wherein the device comprises a vessel, a filter bed with granular filter material, such as sand, wherein the filter bed is provided in the vessel; a transport system arranged to agitate filter material of the filter bed during operation; and a sensor system. The sensor system comprises a contact body that comes in contact with the filter material in the filter bed; and a vibration sensor connected to the contact body for sensing vibrations of said contact body. The vibration sensor is arranged for producing a signal which is dependent on the vibrations detected by the sensor. The contact body comprises the wall of the vessel and/or a rod extending into the filter bed.
    Type: Application
    Filed: January 7, 2009
    Publication date: February 3, 2011
    Applicant: PAQUES B.V.
    Inventor: Sipco Christiaan Reekers
  • Patent number: 7785479
    Abstract: The present invention advances tank-based aquaculture by providing a low cost, high efficiency solid waste separator. The invention combines the simplicity of centrifugal-gravitational separation with the practicality of automatic separator cleaning. Low-pressure air from a blower or air pump induces water flow through the separator. The compressed air source is also used to purge accumulated sludge from the separator and to scour internal separator surfaces. Installation of a captive floating granular media bed within the separator further stabilizes the centrifugal flow pattern, enhances the scouring action during sludge flushing events, and provides substrate for nitrifying bacteria colonization. Separator purging and scouring processes are simply and easily automated with small, low-voltage electric valves and timers. Operational cost-savings are magnified in multiple tank systems where multiple separators are operated by a centralized compressed air system and controller.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: August 31, 2010
    Inventor: Michael Hays Hosford
  • Publication number: 20100012595
    Abstract: Systems and methods for the separation of a particulate-fluid suspension are provided. An apparatus for the separation of a particulate-fluid suspension can include an enclosed vessel having two or more sections disposed coaxially along a common longitudinal centerline, wherein a first section has a first cross sectional area, and a second section has a second cross sectional area. A plurality of apertures can be disposed about the second section. The apparatus can have a cylindrical surface, parallel to the longitudinal centerline of the apparatus, disposed within the first section. A fluid distribution channel having a plurality of apertures can be disposed either about an exterior surface or an interior of the apparatus. A plurality of fluid conduits can provide fluid communication between the fluid distribution channel and the plurality of apertures distributed about the second section.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 21, 2010
    Applicant: KELLOGG BROWN & ROOT LLC
    Inventors: Yong-Lin Yang, Eusebius Gbordzoe
  • Publication number: 20090236298
    Abstract: A wastewater filter assembly comprising a filter having an influent side and an effluent side, a backwash system adapted to control flow of backwash fluid from the effluent side to the influent side, and an agitation system adapted to control the flow of an agitating fluid (e.g., air) from the influent side to the effluent side. In one embodiment, the agitation system includes an agitating tank that stores the agitating fluid, and a series of valves to control the flow of backwash fluid and agitating fluid. In another embodiment, the assembly further includes a control system that controls the backwash system and the agitation system. Preferably, the control system is programmed to pulse the agitation system during operation of the backwash system.
    Type: Application
    Filed: March 18, 2008
    Publication date: September 24, 2009
    Applicant: MUNICIPAL FILTRATION COMPANY, LLC
    Inventor: Kurt M. Lindsley
  • Patent number: 7588692
    Abstract: The present invention is directed to a method and system that separates first particles from second particles, or white blood cells from red blood cells, by sedimentation in a fluid chamber with debulking of one of the first or second particles or red blood cells through the inlet of the fluid chamber. The method and system further includes fractionation of the remaining particles or white blood cells into selected subsets. In one embodiment of the instant invention a blood product containing white blood cells is loaded in a separation chamber, a diluting or sedimenting agent is added to encourage rouleaux formation of any red blood cells, the cells are sedimented and the red blood cells are removed.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: September 15, 2009
    Assignee: CaridianBCT, Inc.
    Inventors: Glenn Delbert Antwiler, Linda A. Taylor
  • Publication number: 20080245743
    Abstract: A high rate, upflow filtration system is described in which a compressible, fibrous lump filtration media is compressed to adjust the porosity and collector size of the media in the bed and to provide a porosity gradient within the bed proceeding from more porous to less porous in a direction opposite to the flow of fluid so that filtration proceeds in a direction from a more porous to a less porous filter bed. Larger particles are removed by the more porous media and successively smaller particles are removed as the filter bed becomes less porous. The system is capable of reducing the turbidity of influent municipal wastewater from about 8 NTU to about 2 NTU at a wastewater flow rate of from about 820 to 1230 L/m2·min (20 to 30 gal/f2·min), at a bed compression ration of from about 15 to 40 percent, and at a backwash rate of from about 1 to 6 percent based on the total wastewater passing through the filter.
    Type: Application
    Filed: May 8, 2008
    Publication date: October 9, 2008
    Applicant: SCHREIBER, LLC
    Inventor: William Frederick Dew
  • Publication number: 20080173581
    Abstract: An aerated biological filtration system (10) for treating waste water includes a treatment vessel (11) of elongated configuration which incorporates a circulating filter bed (23) and a static filter bed (24). The circulating filter bed incorporate a particulate material such as granulated activated carbon having a specific gravity in the range of 1.2 to 1.4 and effective size of 0.6 mm to 1.5 mm. The circulating filter bed is disposed above the static filter bed and an aeration system (27) is disposed between the filter beds. The aeration system is arranged to diffuse air through the circulating bed either continuously or intermittently so as to provide oxygen to micro-organisms attaching to the particulate material and to cause slow circulation of that particulate material. The system has particular application for domestic recycling of grey water.
    Type: Application
    Filed: November 22, 2005
    Publication date: July 24, 2008
    Applicant: NUBIAN WATER SYSTEMS PTY LIMITED
    Inventor: Gregory W. Maclean
  • Patent number: 7381336
    Abstract: An automated method for controlling a solids inventory in a continuous backwashing upflow sand filter system treating a liquid inflow having impurities therein, includes the steps of: monitoring an influent inflow pressure and controlling the air pressure in an air lift pump to maintain a target ratio range between the size of a solids inventory of the system and the size of the sand bed of the system.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: June 3, 2008
    Assignee: MM Filtration Company
    Inventor: Ken M. Stedman
  • Patent number: 7201848
    Abstract: The present invention is directed to a method and system that separates first particles from second particles, or white blood cells from red blood cells, by sedimentation in a fluid chamber with debulking of one of the first or second particles or red blood cells through the inlet of the fluid chamber. The method and system further includes fractionation of the remaining particles or white blood cells into selected subsets. In one embodiment of the instant invention a blood product containing white blood cells is loaded in a separation chamber, a diluting or sedimenting agent is added to encourage rouleaux formation of any red blood cells, the cells are sedimented and the red blood cells are removed.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: April 10, 2007
    Assignee: Gambro BCT, Inc.
    Inventors: Glen Delbert Antwiler, Linda A. Taylor
  • Patent number: 7147755
    Abstract: The method is for treating a liquid or slurry with an ultrasonic energy. A movable endless member is provided that is permeable to a liquid. A transverse foil is disposed below the member and extends across the member and a transducer is in operative engagement with the foil. The member is moved about rollers. The transducer generates pressure pulses into the foil to form implosion bubbles in the liquid disposed above the member. The implosion bubbles have a first diameter (d1). A gap is formed between the member and the foil. The gap represents a distance (d2) that is less than the diameter (d1) of the bubbles to prevent any bubbles of critical size to be captured in the gap.
    Type: Grant
    Filed: November 28, 2002
    Date of Patent: December 12, 2006
    Assignee: Ultra Technology Europe AB
    Inventors: Asa Kristin Schroder Annersten, legal representative, Anja Kristin Hardin, legal representative, Ylva Kristin Lubeck, legal representative, Hakan Dahlberg, Bo Nilsson, deceased
  • Patent number: 6808624
    Abstract: An improved method for using replaceable filtration media in a rotatable drum. A plurality of media cartridges are installed on the rotatable drum. As the drum rotates, the media cartridges are alternately submerged and lifted from the water. The constant cycle of flooding, draining, and tumbling of the media provides excellent water filtration.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: October 26, 2004
    Inventor: Joe Norris
  • Patent number: 6797158
    Abstract: A method and apparatus for acoustically enhanced particle separation uses a chamber through which flows a fluid containing particles to be separated. A porous medium is disposed within the chamber. A transducer mounted on one wall of the chamber is powered to impose on the porous medium an acoustic field that is resonant to the chamber when filled with the fluid. Under the influence of the resonant acoustic field, the porous medium is able to trap particles substantially smaller than the average pore size of the medium. When the acoustic field is deactivated, the flowing fluid flushes the trapped particles from the porous medium and regenerates the medium. A collection circuit for harvesting the particles flushed from the porous medium is disclosed. Aluminum mesh, polyester foam, and unconsolidated glass beads are disclosed as porous media.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: September 28, 2004
    Assignee: Case Western Reserve University
    Inventors: Donald L. Feke, Sanjay Gupta, Zenon Mandralis
  • Patent number: 6790351
    Abstract: A liquid filtering apparatus is placed in a vessel having a bed of filtration material and an intake for introducing unfiltered liquid, that includes a washbox, an airlifting tube extending from the washbox and including an intake end and means for introducing a primary gas to the airlifting tube, the airlifting tube passing through a central pipe, which extends from just below the washbox to a position just above the intake end. At least one screen cartridge is oriented in a generally angular downward direction in the bed and is in communication with an effluent chamber defined in part by the outer surface of the central pipe. A reject line extends from the washbox, and an effluent collector extends from the effluent chamber. A method of filtering and cleaning the filtration material is also disclosed.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: September 14, 2004
    Assignee: Ashbrook Corporation
    Inventors: Yongming Xia, James E. Thompson, Jeffrey S. Devine
  • Patent number: 6641737
    Abstract: A liquid filtering apparatus is placed in a vessel having a bed of filtration material and an intake for introducing unfiltered liquid, that includes a washbox, an airlifting tube extending from the washbox and including an intake end and means for introducing a primary gas to the airlifting tube, the airlifting tube passing through a central pipe, which extends from just below the washbox to a position just above the intake end. At least one screen cartridge is oriented in a generally angular downward direction in the bed and is in communication with an effluent chamber defined in part by the outer surface of the central pipe. A reject line extends from the washbox, and an effluent collector extends from the effluent chamber. A method of filtering and cleaning the filtration material is also disclosed.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: November 4, 2003
    Assignee: Ashbrook Corporation
    Inventors: Yongming Xia, James E. Thompson, Jeffrey S. Devine
  • Publication number: 20030066808
    Abstract: A fluid treatment apparatus comprises a fluid inlet 12 and outlet 13, a granular filter media 15 arranged to filter fluid flowing from the inlet 12 to the outlet 13 and a device 14 arranged to vibrate or agitate the media as fluid flows through the media between the inlet 12 and outlet 13. Vibrating or agitating the granulated media in this way produces a grinding effect which serves to kill any micro-organisms caught in the filter by rupturing their cell walls.
    Type: Application
    Filed: November 19, 2002
    Publication date: April 10, 2003
    Inventor: Malcolm Robert Snowball
  • Patent number: 6517712
    Abstract: An improved vertical filtration unit which includes an airlift and a washbox designed for more efficient washing of dirt particles from the filtration material. The washbox consists of a filter media shield, and a washbox skirt for washing of the filtration material. A throttling valve on the wash water discharge line regulates the overall cleaning rate of the unit. The filtered liquid is discharged via a riser pipe which feeds into a filtered liquid box before exiting the filtration unit.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: February 11, 2003
    Assignee: Ashbrook Corporation
    Inventors: Yongming Xia, James E. Thompson, Jeffrey S. Devine
  • Patent number: 6517724
    Abstract: The present invention provides a floating media biofilter having an economical structure which allows energy efficient and water conserving backwashing of the floating media. The biofilter includes a filter chamber fluidly connected to a charge chamber which is adapted for accumulating air. A trigger device positioned between the charge chamber and filter chamber selectively allows the flow of air from said charge chamber to said filter chamber. An air source is connected to the charge chamber and slowly supplies air thereto. The backwash cycle is initiated by the trigger device allowing air to escape from the charge chamber into the filter chamber and agitate the floating media. Simultaneously, water from the filter chamber flows into the charge chamber. After the trigger device closes, air again accumulates in charge chamber in preparation for another backwash cycle.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: February 11, 2003
    Inventor: Ronald F. Malone
  • Publication number: 20020153320
    Abstract: A method for recovering a desired component from a sample solution with beads under stabilized fluidized bed conditions is provided. Also provided are support beads for use in downstream processing which comprise a polymer matrix into which glass or silica particles have been incorporated.
    Type: Application
    Filed: April 5, 2002
    Publication date: October 24, 2002
    Applicant: PHARMACIA LKB BIOTECHNOLOGY AB
    Inventors: Mats Carlsson, Jan-Gunnar Gustafsson, Per Hedman, Per-Ake Pernemalm, Jorgen Lonngren, Annika Lindgren
  • Patent number: 6426005
    Abstract: A treatment system for treating water/wastewater includes two continuously operating granular media filters that are operated together in series. The water/wastewater to be treated is introduced as an influent into the first of the granular media filters and is treated therein. Treated, processed water/wastewater or effluent is produced as is a first reject which contains impurities separated from a granular media bed in the first granular media filter and which is discharged from the first granular media filter. The effluent from the first granular media filter is further filtered in the second continuously operating granular media filter such that the effluent from the second granular media filter is clarified water and a second reject discharged from the second granular media filter contains impurities separated from a granular bed in the second granular media filter.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: July 30, 2002
    Assignee: Parkson Corporation
    Inventor: Hans F. Larsson
  • Patent number: 6387283
    Abstract: An apparatus for continuously filtering a suspension includes a filter-medium washer provided with length-adjustable walls.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: May 14, 2002
    Assignee: Polyproject Sweden AB
    Inventor: Henric Lind
  • Patent number: 6361701
    Abstract: The invention relates to a method and device for the continuous filtration of liquids containing solid matter, in particular for cleaning wastewater, by means of a filter bed consisting of a particulate filtering medium, which is continuously moved through a vertically positioned cylindrical annular space (2) through which the liquid to be filtered continuously flows radially from the interior to the exterior. The particulate filtering medium containing the separated solid matter is continuously tapped from the lower end of the annular space (2), transported to the top, freed of the filtered solid matter and fed back into the annular space (2) at its upper end. With this kind of method and device, to be able to prevent in a better and more simple manner blockages caused by the separated floc of solid matter, the invention provides that as particulate filtering medium a particle mixture is used with a particle-size range comprising two or more particle sizes, ranging from coarse (2.5 mm) to fine (0.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: March 26, 2002
    Inventor: Horst Schade
  • Patent number: 6319413
    Abstract: Method of filtering liquid using a vertical filter, which includes media, an airlift, a washbox, a reject box, a filtrate chamber, and an effluent box. The method of filtration and media cleaning is automatic. The filtered liquid is collected by multi-cartridge screens before entering a filtrate chamber. The filtrate flows from the filtrate chamber into an effluent weir box. The liquid level in the filter is controlled by an effluent weir in the effluent weir box. The reject line is below the water level in the filter, which provides the driving force for the reject flow. The reject rate is controlled by liquid level in the filter tank and a throttling valve on the reject discharge line. The washbox includes a filtration material shield, a filtration material/dirtied liquid separation zone, and a washbox skirt with a washbox isolator, which prevents the dirt in the washbox form entering the influent zone.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: November 20, 2001
    Assignee: Ashbrook Corporation
    Inventors: Yongming Xia, James E. Thompson, Jeffrey S. Devine
  • Patent number: 6221258
    Abstract: A method and apparatus for acoustically enhanced particle separation uses a chamber through which flows a fluid containing particles to be separated. A porous medium is disposed within the chamber. A transducer mounted on one wall of the chamber is powered to impose on the porous medium an acoustic field that is resonant to the chamber when filled with the fluid. Under the influence of the resonant acoustic field, the porous medium is able to trap particles substantially smaller than the average pore size of the medium. When the acoustic field is deactivated, the flowing fluid flushes the trapped particles from the porous medium and regenerates the medium. A collection circuit for harvesting the particles flushed from the porous medium is disclosed. Aluminum mesh, polyester foam, and unconsolidated glass beads are disclosed as porous media.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: April 24, 2001
    Assignee: Case Western Reserve University
    Inventors: Donald L. Feke, Sanjay Gupta, Zenon Mandralis
  • Patent number: 6153113
    Abstract: A system and method are disclosed for separating particles having different sedimentation velocities. The system includes a container containing a binding substance including first particles and ligands attached to the first particles. When the binding substance is mixed with a liquid carrying at least second and third particles, the ligands bind the first and second particles together to form groups of bound particles. The groups of bound particles are separated from the third particles in a fluid chamber configured to be mounted on a centrifuge rotor. One of the disclosed methods includes forming a saturated fluidized bed of particles to retain the particles groups in the fluid chamber. Another of the disclosed methods includes removing at least some of the first particles after the binding substance is mixed with the liquid carrying second and third particles.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: November 28, 2000
    Assignee: Cobe Laboratories, Inc.
    Inventors: Raymond P. Goodrich, Todd Curtis Green
  • Patent number: 6143186
    Abstract: A continuous filter device for liquids has a filter chamber that receives a granular bulk material forming a filter bed. The filter chamber has rectangular inner-walls with a liquid-permeable inlet side and a liquid-permeable outlet side positioned opposite the inlet side. A liquid-impermeable outer wall is positioned at the inlet side and forms together with the inlet side an inlet chamber. The inlet side has openings allowing flow of a liquid to be filtered from the inlet chamber into the filter chamber. A liquid-impermeable outer mantle is positioned at the outlet side and forms together with the outlet side a filtrate collection chamber. The outlet side has openings allowing filtrate flow from the filter chamber into the filtrate collection chamber. A cone-shaped removal chamber is connected to a lower end of the filter chamber. A flow discharge chamber is connected to an upper end of the filter chamber.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: November 7, 2000
    Inventor: Sabine Van Unen
  • Patent number: 6143187
    Abstract: Improved fluidized bed filters are described and claimed. The filters are exemplified for use in aquarium systems. A preferred embodiment of the filter of the subject invention comprises a cylinder having an inlet port. Water is pumped into the inlet port. The force of the water fluidizes the filter medium within the cylinder. Filtered water escapes the system over the open end of the cylinder or through an outlet channel.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: November 7, 2000
    Inventor: Mark B. Robertson
  • Patent number: 6071422
    Abstract: An apparatus and method are disclosed for filtering or separating particles. The apparatus has a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the chamber. A saturated fluidized bed of first particles forms within the fluid chamber and obstructs flow of second particles through the chamber. Additive substances alter sedimentation velocity of the first particles to modify the filtration characteristics of the saturated fluidized bed.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: June 6, 2000
    Assignee: Cobe Laboratories, Inc.
    Inventors: Dennis Hlavinka, Frank Corbin
  • Patent number: 6051146
    Abstract: A system and method are disclosed for separating particles having different sedimentation velocities. The system includes a fluid chamber for separating the particles form one another. Conduits are provided for flowing liquid carrying particles to the fluid chamber and for mixing the liquid with a diluting liquid. Structure is also provided for separating particles from the liquids after the particles are separated in the fluid chamber. The disclosed methods include forming a saturated fluidized bed of first particles to retain second particles in the fluid chamber. A diluting liquid having a density less than that of the particles is mixed with the liquid carrying particles to reduce overall density of substances in the fluid chamber and thereby reduce Coriolis jetting of liquids in the fluid chamber.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: April 18, 2000
    Assignee: COBE Laboratories, Inc.
    Inventors: Todd Curtis Green, Raymond P. Goodrich
  • Patent number: 5951877
    Abstract: An apparatus and method are disclosed for filtering or separating particles. The apparatus has a motor coupled to a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the chamber. At least one of the motor and the substance supply are controlled to maintain a saturated fluidized bed of first particles within the fluid chamber while causing second particles to be retained in the chamber.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: September 14, 1999
    Assignee: Cobe Laboratories, Inc.
    Inventors: Robert Langley, Dennis Hlavinka, Linda A. Taylor, John C. Walker
  • Patent number: 5945005
    Abstract: A filter system (110) includes a tank (130) with a conveyer (140) for, preferably continuously, conveying filter media (11) from a filter zone (119) in the tank (130) where the filter media (11) traps predetermined matter (16), such as particulates, to a quiet zone (115) in the tank (130) where the predetermined matter (16) separates from the filter media (11) and is allowed to accumulate and be withdrawn from the tank (130). The conveyer (140) preferably includes a screw auger (141) and a duct (142) for containing the screw auger (141). The filter media (11) is preferably buoyant when the fluid (21) being filtered is water.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: August 31, 1999
    Inventors: John H. Junius, Anna H. Junius
  • Patent number: 5939319
    Abstract: An apparatus and method are disclosed for filtering or separating particles. The apparatus has a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the chamber. A saturated fluidized bed of first particles forms within the fluid chamber and obstructs flow of second particles through the chamber. Additive substances alter sedimentation velocity of the first particles to modify the filtration characteristics of the saturated fluidized bed.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: August 17, 1999
    Assignee: Cobe Laboratories, Inc.
    Inventors: Dennis Hlavinka, Frank Corbin
  • Patent number: 5879567
    Abstract: A fluidized bed filter is described and claimed. The filter is exemplified for use in an aquaculture system under hydraulic pressure. A preferred embodiment of the filter of the subject invention comprises a closed cylinder having an inlet port and an outlet port at or near one end. Water is pumped into the inlet port and through a hollow delivery tube positioned within the cylinder and ending a short distance from the closed end of the cylinder. The force of the water contacting the closed end of the cylinder causes the water to change direction drastically creating a flow pattern within the cylinder. This flow pattern exerts a force sufficient to fluidize filter medium within the cylinder. Filtered water escapes the system via the outlet port.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: March 9, 1999
    Assignee: Bio-Con Labs, Inc.
    Inventor: Mark B. Robertson