Gravity Flow Of Particles Type Patents (Class 210/268)
  • Patent number: 10737260
    Abstract: A system and method configured to restore ion exchange kinetic properties and purify resin is described. Degraded ion exchange kinetic properties of anion resin will eventually result in impurity slippage through resin charges. This system and method employs an acid catalyst in combination with sulfite cleaning solution to remove organic material and to protonate iron oxides for deconstruction and removal from anion resins. The cleaning solution, when applied via a cleaning vessel utilizing an eductor(s)/plenum and wedge-wire screen draw chamber, while controlling all phases of cleaning by electronic monitoring, yields complete restoration of ion exchange kinetics on usable resin. As such, the system and method provides a safe, effective, and vastly improved method for restoring anion resin kinetics and improving regeneration quality, for improved resin performance and minimizing resin replacement costs.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: August 11, 2020
    Assignee: Ionx Solutions, LLC
    Inventor: Thomas O. Miller
  • Patent number: 10138141
    Abstract: The invention relates to a method for blowing off gaseous contaminants from crude water in the production of drinking water, comprising the step of introducing the water to be treated to the top of a shielded aerator and letting it pass through stacks of tubular elements interspersed with perforated sheets, while subjected to counter current suction. In a second aspect a device is provided for blowing off gaseous contaminants from crude water according to said method.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: November 27, 2018
    Assignee: MICRODROP AQUA APS
    Inventors: Suni À Dalbø, Karsten E. Jensen, Finn Lebech, Idar Beck, Andreas Guldager, Peder Godsk Svejgaard
  • Patent number: 10107234
    Abstract: Disclosed are a canister and an insertable filter for a canister which collects fuel evaporation gas and emits the collected fuel evaporation gas to an intake pipe when an engine is purged. The insertable filter includes a pipe configured to be able to penetrate through a case of the canister, and meshes configured to filter foreign materials. The meshes are installed at a portion where an inside and an outside of the pipe are in fluidic communication with each other.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: October 23, 2018
    Assignee: Hyundai Motor Company
    Inventor: Dong-Cho Lee
  • Patent number: 8673225
    Abstract: A composite continuous countercurrent fluidized moving bed (FMB) and/or expanded moving bed (EMB) may be used for carrying out processes of recovery, purification or reaction of single or multiple component/s of interest, by contacting liquid phase containing the component/s with a solid adsorbent in continuous countercurrent mode. The net movement of the solids is against the liquid, flowing in upward direction through stages/columns, and sedimenting solids from the one stage/column are continuously fed to the top of another stage/column placed below or alongside of previous stage/column; and also operating in fluidized/expanded bed mode, wherein its countercurrent contact with up-flowing liquid is carried out. A system described herein may include a number of stages/columns. The FMB/EMB system can be used in processes for continuous recovery, purifications or reactions of various products.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: March 18, 2014
    Assignee: DBT-ICT Centre for Energy Biosciences
    Inventors: Arvind Mallinath Lali, Sandeep Bhaskar Kale, Vinod Dinkar Pakhale, Yogeshwar Narayanrao Thakare
  • Patent number: 8252180
    Abstract: A tank for water-carrying appliances is proposed, in particular domestic appliances or appliances for the treatment of foods and/or beverages, such as beverage vending machines, in particular coffee vending machines, drinking water dispensers, cooking and baking appliances, steam appliances, in particular steam irons, steam cleaners, high-pressure cleaners, air purifiers and conditioners or the like, a suction connection on the tank for the intake of water from the tank, with means for generating a vacuum, and a filter connection for connecting a filter cartridge inside the tank being provided, while it is ensured that only one permitted filter type is used. A tank according to the invention is characterized by mechanical coding structures at the filter connection element in order to exclude the use of a filter cartridge which does not correspond to the tank.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: August 28, 2012
    Assignee: Aquis Wasser-Luft-Systeme GmbH, Lindau, Zweigniederlassung Rebstein
    Inventors: Kurt Wallerstorfer, Andreas Wawrla, Roland Scholz
  • Patent number: 8202419
    Abstract: A tank is proposed for appliances which use water, in particular domestic appliances or appliances for preparation of foodstuffs and/or drinks, such as automatic drinks machines, in particular automatic coffee machines, drinking water dispensers, cooking and baking appliances, steam appliances, in particular steam irons, steam cleaners, high-pressure cleaners, air cleaners and conditioners or the like, with a connection being provided on the tank for supplying water from the tank to the appliance and with a filter connection being provided for connection of a filter cartridge in the interior and/or outside the tank, while providing assurance that only the permitted filter type can be used. A tank according to the invention is distinguished by mechanical coding structures on the filter connecting element, in order to preclude the use of a filter cartridge which does not correspond to the tank.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: June 19, 2012
    Assignee: Aquis Wasser-Luft-Systeme GmbH, Lindau, Zweigniederlassung Rebstein
    Inventors: Kurt Wallerstorfer, Andreas Wawrla, Roland Scholz, Bernd Heitele
  • Patent number: 8202418
    Abstract: A tank filter combination is provided for appliances which use water, in particular domestic appliances or appliances for preparation of foodstuffs and/or drinks, such as automatic drinks machines, in particular automatic coffee machines, drinking water dispensers, cooking and baking appliances, steamers, in particular steam irons, steam cleaners, high-pressure cleaners, air cleaners and air conditioners, etc. having a suction connection on the tank for suction of water from the tank at a reduced pressure, and a filter connection for connection of a filter cartridge in the interior of and/or outside the tank to ensure use of a permissible filter type. A filter cartridge according to the invention is distinguished by mechanical coding structures with a polygonal structure on the circumferential surface on the output side of the filter cartridge to prevent the use of a filter cartridge which does not correspond to the tank.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: June 19, 2012
    Assignee: Aquis Wasser-Luft-Systeme GmbH, Lindau, Zweigniederlassung Rebstein
    Inventors: Kurt Wallerstorfer, Andreas Wawrla, Roland Scholz
  • Patent number: 8187465
    Abstract: A blood filtering device for the recuperation of blood from wound drained blood, in particular for an autologous blood transfusion system, has a first filter arranged upstream of a second filter. The first filter is adapted for removing emboli and/or large particulate matter from the blood and for allowing red blood cells to pass. The second filter is adapted for retaining red blood cells. An exit port is arranged downstream of the first filter and upstream of the second filter. The device is characterised in that the second filter has a pore size of more than about 0.5 ?m. A method of recuperating blood from wound drained blood is also disclosed.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: May 29, 2012
    Assignee: Gelanus B.V.
    Inventor: Arno Pieter Nierich
  • Patent number: 8163249
    Abstract: A multiple-stage granular moving-bed apparatus comprises a first integrated moving-bed unit, a second integrated moving-bed unit and at least one granular material. The first integrated moving-bed unit, having a first inlet part for providing a raw gas flowing therein, a first outlet part for providing a partially-cleaned gas flowing thereout, and a plurality of first flow-corrective elements disposed therebetween for defining two channels. The second integrated moving-bed unit, coupled to the first integrated moving-bed unit, having a second inlet part for providing the partially-cleaned gas flowing therein, a second outlet part for providing a completely-cleaned gas flowing thereout, and a plurality of second flow-corrective elements disposed therebetween for defining two channels. The at least one granular material flows through the two channels respectively and then passes through the two channels respectively.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: April 24, 2012
    Assignee: Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
    Inventors: Yau-Pin Chyou, Jiri Smid, Shu-San Hsiau
  • 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
  • Patent number: 8142730
    Abstract: A two-stage granular moving-bed filter includes a gas inlet part, a gas outlet part, and a plurality of flow-corrective elements. The gas outlet part is disposed opposite to the gas inlet part, and the plurality of flow-corrective elements is disposed in a channel formed between the gas inlet part and gas outlet part. Meanwhile, a first granular material is provided to flow through a channel formed between the gas inlet part and the flow-corrective element in a state of mass flow, and a second granular material is provided to flow through a channel formed between the flow-corrective element and the gas outlet part. By means of having two different kinds of filter media moving through the channels between the gas inlet and outlet part, it is capable of performing two-stage filtering process after the raw gas flows therethrough, so as to improve the filtering effect of the gas.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: March 27, 2012
    Assignee: Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
    Inventors: Jiri Smid, Yau-Pin Chyou, Shu-San Hsiau, Chin-Ching Tzeng, Chia-Ren Hsu
  • Patent number: 7862715
    Abstract: A method and apparatus for separating purifying media from a treated fluid. The method includes transporting the purifying media and the treated fluid along a substantially horizontal direction while a substantial quantity of purifying media fall along a substantially vertical direction relative to the treated fluid to generate a concentration of purifying media below the treated fluid. The falling purifying media are collected while releasing the treated fluid so as to separate the purifying media from the treated fluid.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: January 4, 2011
    Assignee: Drake Engineering Incorporated
    Inventor: Ronald N. Drake
  • Patent number: 7753236
    Abstract: Apparatus for storing water, especially purified water, for use in a beverage dispenser is provided with a microbiological agent to kill or deter microbiological growth and maintain the quality of the water. The agent is provided in a physical form to promote contact with the water and may be renewable to maintain effectiveness of the agent over a period of time. In one arrangement, the agent is contained in a cartridge 92 arranged in a re-circulation loop 89 through which the water in a reservoir 80 is passed and returned to the reservoir 80. The cartridge 92 and/or a carrier for the agent within the cartridge 92 may be replaceable to renew the agent. The agent may also be provided within the reservoir 80 and various arrangements for this are also disclosed.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: July 13, 2010
    Assignee: The Coca-Cola Company
    Inventor: Graham Frederick Williams
  • Patent number: 7754159
    Abstract: A fluidized bed reactor configured for reduced backflow of fluid is provided. The fluidized bed reactor comprises a vessel configured to contain a level of fluid, a feed conduit positioned to deliver feed into the vessel from an elevation above the level of fluid and a vacuum relief valve coupled to said feed conduit to introduce gas into the feed conduit.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: July 13, 2010
    Assignee: Envirogen Technologies, Inc.
    Inventor: Samuel Frisch
  • Patent number: 7727628
    Abstract: A particulate reusable sorbing coalescing agent facilitating the separation of a non-aqueous phase from an aqueous phase. The agent has a desired shape and properties, sheared from a block of matrix material and presents a higher coalescing rate relative to existing sorbing coalescing agents. Also, a method of manufacturing the particulate reusable sorbing coalescing agent and a method of use the particulate reusable sorbing coalescing agent are disclosed.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: June 1, 2010
    Assignee: Torr Canada, Inc.
    Inventors: Linda Veronneau, Germain Veronneau
  • Patent number: 7699977
    Abstract: Wastewater and sewage filtering and adsorbing unit includes sewage reservoir, clean water reservoir, active coke powder storage, filtering and adsorbing tank, control cabinet, saturated active coke sludge settling tank, filtering and adsorbing material. The sewage reservoir and the clean water reservoir are on one side, and the filtering and adsorbing tank and the active coke powder storage are on other side. Active coke powder storage is above and connected to filtering and adsorbing tank by conduits; inlet pipes in rows and an outlet branch pipe are mounted into the filtering and adsorbing tank. Filtering and adsorbing material is active coke powder. The sewage reservoir is connected with the filtering and adsorbing tank. An active coke sludge discharge port and an active coke sludge conveyor, which are connected to the saturated active coke sludge settling tank by transporting pipelines, are at the bottom of the filtering and adsorbing tank.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: April 20, 2010
    Assignee: Shenyang David Environmental Protection & Energy Saving Equipment Co., Ltd.
    Inventors: Dawei Zhang, Yanbin Guo
  • Publication number: 20080203020
    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: Application
    Filed: November 1, 2005
    Publication date: August 28, 2008
    Inventors: Jan Hendrik Hanemaaijer, Renze Tjeert Van Houten, Earl Lawrence Vincent Goetheer
  • 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: 7132088
    Abstract: A granular moving-bed apparatus is introduced to have an inlet louvered wall, an outlet louvered wall opposing to the inlet louvered wall, a granular path formed in between, a plurality of serial roof-shaped flow-corrective elements located along the granular path, and a predetermined type of granular materials flowing inside the granular path. The inlet louvered wall and the outlet louvered wall are particularly constructed to form serial hopper-shaped structures that define the granular path. The roof-shaped flow-corrective element is systematically displaced with respect to the hopper-shaped structure by specific criteria so that problems of corrosions, plaques and stagnant zones formed to the louvered walls of the apparatus can be avoided.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: November 7, 2006
    Assignee: Industrial Technology Research Institute
    Inventors: Jiri Smid, Shu-San Hsiau, Jing-T. Kuo, Chuen-Shii Chou, Ching-Yu Peng, Hom-Ti Lee
  • Patent number: 7045057
    Abstract: A process for preparing an ion-exchangeable media within a moving-bed or simulated moving-bed device, which can create a true or simulated media flow, comprising the steps of packing the bed with ion-exchangeable media and passing a solution, containing a mixture of ionic species, through the media, wherein the solution is passed partly or completely counter-current to the media flow direction such that the ionic species are loaded to a desired level upon equilibration.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: May 16, 2006
    Assignee: Calgon Carbon Corporation
    Inventors: Mark A. Bollinger, Chen-Chou Chiang
  • 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: 6780312
    Abstract: A filtration apparatus comprising a container that houses a filtration tank to which contaminated water is supplied, a cleansing tank, and a screw conveyor disposed within said cleansing tank is provided. Filtration media is housed within the cleansing tank and the container. The cleansing tank has lateral surface openings, lower openings, and an upper opening. When the screw conveyor rotates, filtration media as well as water (contaminated water) is conveyed upward from the lower openings to the upper opening while being agitated. At the same time, filtration media circulates between the cleansing tank and the container and is cleansed. When cleansing is complete, a backwash water supply pump backwashes water, and expels contaminants separated and removed from the filtration media out of the container by an expulsion pump. Lateral surface doors close lateral surface openings by drive means only during cleansing (agitation). This structure increases the filtration area.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: August 24, 2004
    Assignee: Nihon Genryo Co., Ltd.
    Inventor: Yasuhiro Saito
  • Patent number: 6716344
    Abstract: A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidized bed riser for desorption of ions (operating as a riser fluidized bed) to provide regenerated particles. Ion exchange particles circulate continuously between the riser and the downer i.e. the particles that have adsorbed ions in the absorber pass from the adsorber (downer) to the desorber where they are regenerated and the so regenerated particles are return to the adsorber near the top of the adsorber column. The LSCFB can be used in processes for continuous recovery of the ions of interest.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: April 6, 2004
    Assignee: The University of Western Ontario
    Inventors: Amarjeet Singh Bassi, Jingxu Zhu, Qing Dao Lan, Argyrios Margaritis, Ying Zheng
  • Publication number: 20040050762
    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: Application
    Filed: September 17, 2003
    Publication date: March 18, 2004
    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
  • Patent number: 6550264
    Abstract: A gravity-assisted water saving system, and a method for its use, that can be utilized to collect the condensate from an air conditioning system, sanitize it, and then divert it for constructive use. It has a chamber with an inclined bottom surface, a dimension slightly larger than a stack of several tablets used for sanitizing swimming pool water or bleach tablets used for laundry sanitizing purposes, a P-trap on its water inlet side that prevents corrosive fumes from entering the air conditioning system from which the condensate is derived, a removable cap sealing its top opening to prevent escape of corrosive fumes into the atmosphere, and an optional mounting bracket for enhanced stabilization. Inflow tubing connected to the chamber permits ready attachment of the present invention to an air conditioning condensate discharge pipe, while a discharge tube in an inferior position transports reclaimed water to its location of subsequent use.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: April 22, 2003
    Inventor: Christopher Ralph Cantolino
  • Patent number: 6517708
    Abstract: A process and apparatus for treating the heavy hydrogen isotope content of the contaminated water by contacting the contaminated water with a molecular separation material including a support medium carrying a plurality of hydration sites having associated waters of hydration, whereby a portion of the waters of hydration are replaced with heavy hydrogen isotope water molecules from the contaminated water. The hydrogen isotope water molecule content of the contaminated water is thus decreased. The molecular separation material is preferably a polymer, such as a polystyrene/divinyl benzene cross-linked polymer, having hydration sites with associated waters of hydration. Preferred hydration sites are obtained by reacting the polymer, which has been sulfonated or phosphonated to create reactive sites, with a salt of, for example, aluminum, sodium, magnesium, copper, zinc, cobalt, iron, nickel, manganese, potassium and chromium.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: February 11, 2003
    Inventors: James A. Patterson, Louis E. Furlong, Martin J. Gruber
  • 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: 6471857
    Abstract: A filter apparatus removes foreign substances contained in raw water by passing the raw water through a filter layer (8) made up of a particulate filter medium disposed in a filter tank (1).
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: October 29, 2002
    Assignee: Koyo Engineering Co., Ltd.
    Inventor: Kazutoshi Kaibara
  • 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: 6403384
    Abstract: A device and method for separating a fluid component from a non-fluid component of a sample comprises a plurality of microspheres disposed in abutting relation and forming therebetween a plurality of capillary channels, whereby when the microspheres are disposed in fluid communication with a sample the fluid component is separated from the non-fluid component by capillary flow of the fluid component through the capillary channels formed by the interstitial spacing between abutting microspheres.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: June 11, 2002
    Assignee: Umedik, Inc.
    Inventor: Peter Lea
  • 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: 6383376
    Abstract: A filter comprises a main tank and at least two separate beds of particulate filter media contained in respective conical recipients integrated within the main tank so as to minimize the overall height and weight of the filter. A transport pipe is provided for each conical recipient in order to transport dirty filter media therefrom to a washing device in which the dirty filter media is washed as it flows downwardly in counter-current with a wash liquid. A filter media return pipe is provided for each conical recipient in order to return the cleaned filter media therein. The provision of multiple transport pipes and return pipes ensures efficient distribution of the filter media within the filter.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: May 7, 2002
    Assignees: Plasti-Drain Ltée
    Inventor: Pierre Beauchamp
  • 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: 6334956
    Abstract: To adsorb, on solid adsorbent particles, constituents dissolved in liquid, or to desorb (extract), from solid desorbent particles, soluble constituents in liquid, in a container a packed bed formed from granular material is mixed with adsorbent particles or desorbent particles smaller than 200 &mgr;m, said bed moves downwards by virtue of gravity, said liquid is passed upwards through the bed by means of a pressure differential, the said dissolved constituents being adsorbed on the solid adsorbent particles or the said soluble constituents being extracted from the desorbent particles.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: January 1, 2002
    Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek (TNO)
    Inventor: Jan Hendrik Hanemaaijer
  • 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: 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: 6077426
    Abstract: A filter with a horizontally fed filter chamber having loose bulk material as the filter medium has a wall on the upstream side and downstream side to hold back the loose bulk material in the filter chamber. The filter chamber includes a compressed air-lift pump disposed inside of the filter chamber for pumping the loose bulk material from a bottom area of the filter chamber, through a bottom lifter connected with a stand pipe to an upper rinse chamber, and a hopper disposed at a bottom of the filter chamber having entrance slots and surrounded by a chamber that is provided with a rinse water inlet tube connected to a raw water chamber.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: June 20, 2000
    Assignee: Grabowski Tropfkorper-Technik GmbH
    Inventor: Gunther Grabowski
  • Patent number: 5976365
    Abstract: A reactor apparatus including a fluid bed reactor wherein liquid to be processed is conducted upwardly therein through a solid bed to fluidize the bed, the bed including particulate solids having biological material supported thereon, and the liquid forming an effluent head above the bed. The reactor apparatus also includes a control apparatus for removing excess biological material from the reactor. The control apparatus includes a tubular separator column which is emersed in the liquid effluent head, and a telescoping sludge valve that has a draw-off port communicating openly with the effluent head surface and that is adjustable to raise and lower the draw-off port relative to the effluent head surface to control the sludge withdrawal rate.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: November 2, 1999
    Assignee: Envirex, Inc.
    Inventor: Peter J. Petit
  • Patent number: 5895567
    Abstract: The invention relates to an apparatus for cleaning organic waste material from waste fluid. This comprises a container at least partially filled with carrier elements, a waste fluid feed debouching into the container close to a vertical end, a fluid outlet connected to the container close to the opposite vertical end, carrier circulation means comprising a pump for pumping round water with carrier elements taken up therein, provided with a pump inlet and outlet respectively close to opposing vertical ends of the container, a sediment drain at the bottom of the container and control means for periodically switching on the carrier circulation means.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: April 20, 1999
    Assignee: Patent Care B.V.
    Inventor: Jan Wytze Van Der Herberg
  • Patent number: 5885462
    Abstract: The process consists in passing the liquid to be purified and a superabsorbent, preferably of polyacrylic type, through a column, the upward speed of the liquid being chosen such that, in the column, the superabsorbent which is merely swollen is in a stationary dynamics regime, whereas the superabsorbent laden with polyvalent ions settles at the bottom of the column. Application to the treatment of the aqueous rinses of articles which have undergone a nickel-plating treatment.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: March 23, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Claudine Biver, Jean-Pierre Cuer, Francois Delmas, Francois Garcia
  • Patent number: 5755959
    Abstract: A suspension is delivered to a filter bed comprised of granular filter medium in a continuously working filter at the lower part of the bed and is then permitted to flow upwards through the bed. With the intention of optimizing the capacity of the filter, the suspension is now guided into a central region of the bed. The suspension is divided from this region into at least two specific proportional quantities which are each led from the filter bed in a respective ring-shaped pattern at mutually different heights in relation to the extension of the bed, these ring-shaped patterns having different diameters and each being adapted to the extension of the filter medium in the direction of the diameter.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: May 26, 1998
    Assignee: Nordic Water Products AB
    Inventors: Kurt Jonsson, Lennart Lenvik, Magnus Hagrot, Jonas Oskarsson
  • Patent number: 5746913
    Abstract: A continuous sand filter has a tank provided therein with a first separation container and a second separation container. The continuous filtration of the waste water is carried out in the first separation container and the second separation container. The first separation container is provided with an arresting piece capable of enhancing the filtration effect. The light and the heavy impurities are treated separately in the first separation container. The further filtration process is carried out continuously in the second separation container.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: May 5, 1998
    Inventors: Hsiu-Chuan Chang, Mao-Sheng Lin
  • Patent number: 5711874
    Abstract: A water treating apparatus consisting of a water path having entrance(s) and exit(s) and ceramic grain(s) movably inserted in said water path is provided in the present invention. When water is put in said water path of said water treating apparatus, said ceramic grains may be moved and rolled by the pressure of said water flowing in said water path and said moving and rolling ceramic grains may disturb the flow of said water to intensify the effectiveness of water treatment by said ceramic grains.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: January 27, 1998
    Assignee: I.B.E. Co., Ltd.
    Inventor: Takashi Kawata
  • Patent number: 5707514
    Abstract: A water treating apparatus is provided which can treat waste water for use as raw water in an ultrapure water producing system without addition of various kinds of chemicals. The apparatus includes a first water tank for receiving acid waste water, a second water tank for subjecting the waste water from the first water tank to solid-liquid separation and discharging supernatant liquid, an ion exchange tank including ion exchange resin and an aeration tube for generating treated water through a membrane filter, a precipitation tank for settling ion exchange resin, an air lift pump for introducing ion exchange resin from the precipitation tank into the first water tank, and a return air lift pump for returning ion exchange resin from the second water tank to the ion exchange tank. The ion exchange resin acts to exchange ions with fluorine ions of treated water in the ion exchange tank and is regenerated by acid waste water in the first water tank.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: January 13, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuyuki Yamasaki, Yoshihiro Hamaguchi, Shigeki Matumoto
  • Patent number: 5698106
    Abstract: It is possible to filter a suspension or emulsion in a filter bed of particulate filter medium by allowing the suspension to flow upwards through the filter bed simultaneously as the medium flows downwards through a filtering tank wherein filtration takes place. Filtration thus takes place during counterflow between suspension and filter medium. The supply of suspension takes place in the lower part of the filter bed and the filtered liquid phase is taken away from a zone above the filter bed. The polluted filter medium close to the bottom of the filter tank is taken out for conveyance to a washing apparatus above the filter bed and after washing is returned to the upper side of the filter bed. For providing a filter which has a considerably lower construction height for a given and unchanged volume of the filter medium, the washing apparatus is lowered so that its lower part is at a level below the upper surface of the filter bed.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: December 16, 1997
    Assignee: Nordic Water Products AB
    Inventors: Hans Larsson, Ulf Hjelmner, Sven Hakansson
  • Patent number: 5681472
    Abstract: A filtering process for and apparatus separating air bubbles and granular filter medium from a filtrate contaminated by the filter medium and bubbles when passing through a filter bed formed by the filter medium for treatment of a suspension or liquid solution, a gas being passed through the filter medium in contact therewith, includes providing a treated filtrate zone (3) above the filter bed (2), collecting the treated filtrate in the filtrate zone, conducting granular filter medium from the filter bed (2) upwardly through a conveying pipe (4) to a position above the filter bed and thereafter downwardly through a washing apparatus (5) from which the filter medium is precipitated onto a plate (11) above the filter bed.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: October 28, 1997
    Assignee: Nordic Water Products AB
    Inventors: Kurt Jonsson, Magnus Hagrot, Lennart Lenvik
  • Patent number: 5582722
    Abstract: An improved vertical filtration unit includes a bell-shaped lower end for the air-lift tube, an injection ring for introducing air into the air-lift tube at a considerable volume, and a washbox with a more efficient scrubbing arrangement for washing dirt particles from the filtration material. The bell-shaped lower end makes the transporting of a mixture of dirty filtration material and water to the top of the filtration unit more efficient than with the conventional straight tube bottom. The tube receives compressed air from two horizontally positioned inlets positioned 180.degree. from each other. The flat and round target plate makes the scrubbing of filtration material more efficient, while a baffle prevents the filtration material from being ejected from the washbox.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: December 10, 1996
    Assignee: Ashbrook-Simon-Hartley Corporation
    Inventors: Anthony M. Wachinski, Yongming Xia, Jaime Bengoechea
  • Patent number: 5580445
    Abstract: Disclosed is a novel continuous ion exchange apparatus capable of performing both ion exchange treatment and regeneration treatment within a single column by the use of ion exchange resin(s) whose ion exchange abilities can be regenerated by acid or alkali.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: December 3, 1996
    Assignee: Organo Corporation
    Inventors: Takeshi Iwatsuka, Kazuhiko Shimizu
  • Patent number: RE36660
    Abstract: This invention provides a fluidized bed reactor with improved method and apparatus for inhibiting and clearing clogging of the fluid distribution network in such reactor. In particular, at least one channel or reservoir of fluid is provided over at least a selected portion of the distribution network, with fluid from such column/reserve being released to maintain flow and pressure in the distribution network as the media bed is defluidized. For the preferred embodiment, the fluid column is (a) a feed pipe connecting a fluid inlet which is above the reactor fluid level to the distribution network; and (b) a plurality of risers which, for the preferred embodiment, extend from the end of each lateral tube of the distribution network. A vacuum breaker is provided for each fluid column to permit fluid to flow from the column into the network when pressure is removed.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: April 18, 2000
    Assignee: AquaFuture, Inc.
    Inventors: Joshua N. Goldman, John R. Rosenau