Reverse Flow Patents (Class 210/793)
  • Patent number: 10631525
    Abstract: A multi-path aquarium filtration system has multiple chambers adapted to receive different types of treatment systems, and has a bypass gate assembly and at least one alternative flow path. By adjusting the bypass gate assembly volumetric flow rate between certain chambers is managed.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: April 28, 2020
    Inventors: L. Ward Huntley, Jeffrey R. Brudos, Nick Lari
  • Patent number: 9540799
    Abstract: The invention provides systems, associated component parts, and assemblies of the pre-filtration systems, that are useful for treating storm water entering underground storm water management systems. The invention further provides methods to pre-filter storm water prior to entering underground water management systems. The invention reduces pollutant loading in storm water runoff with minimal footprint, flexibility of use and ease of maintenance.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: January 10, 2017
    Assignee: Oldcastle Precast, Inc.
    Inventor: Douglas Paul Allard
  • Patent number: 9146055
    Abstract: A gas-particle processor comprising: a chamber having a gas inlet, a gas outlet and one or more particle inlets; a gas flow arrangement operable to flow gas through the chamber from the gas inlet to the gas outlet at a first controlled mass flow-rate; and a particle flow arrangement operable to introduce particles in one or more streams into the chamber at a second controlled mass flow-rate, each particle stream flowing through respective processing regions in the chamber, wherein the processor is operable to control the first and/or second controlled mass flow-rates to provide a gas-particle mixture porosity in a substantial portion of each processing region of 0.900-0.995.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: September 29, 2015
    Inventor: Owen Potter
  • Publication number: 20140001128
    Abstract: A method for reclaiming and reusing a substantial portion of the waste water creating during the backwashing of a pool filter. The system uses a separate floating debris filter to remove solids before pumping the waste water into a sediment retention tank. The waste water is stored in the sediment retention tank for about a day, during which time the suspended solids settle to the bottom. The water in the sediment retention tank is then pumped back into the circulating pool system.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Inventor: Stanton Jeffrey Mullis
  • Publication number: 20130168331
    Abstract: A highly efficient means for progressively backwashing and fluidizing filter media in packed media filtration systems utilized for removing contaminants from wastewater is disclosed. The means is suited for use with a generally unsaturated filter with air and water flowing concurrently in a downward direction during treatment. During periodic backwashing, a pump provides treated wastewater from a holding tank to an underdrain and a pressurized water jet configured as an eductor within the filter vessel to progressively fluidize, backwash and redistribute the media. Fluidized media flow induced by the water jet is turbulently transported to the top of the filter vessel in an upflow pipe, wherein excess biofilm is scoured from the media. Scoured biofilm leaves the filter with backwash water through an overflow conduit and an exit port. Backwashing removes excess solids caught in the filter media and controls the biofilm thickness and the nature of the biofilm.
    Type: Application
    Filed: December 6, 2012
    Publication date: July 4, 2013
    Inventor: Robert A. Beggs
  • Publication number: 20130134100
    Abstract: Compacted filter beds comprising a non-sintered, buoyant filter medium may be useful in fluid filtration apparatuses and methods. For example, a method may include filtering a first fluid through a filter bed that is compacted, the filter bed comprising a non-sintered, buoyant filter medium that is mechanically compacted; and backflushing a second fluid through the filter bed so as to fluidize the non-sintered, buoyant filter medium.
    Type: Application
    Filed: October 17, 2012
    Publication date: May 30, 2013
    Applicant: Celanese Acetate LLC
    Inventor: Celanese Acetate LLC
  • Patent number: 8409441
    Abstract: Dialysis systems comprising actuators that cooperate to perform dialysis functions and sensors that cooperate to monitor dialysis functions are disclosed. According to one aspect, such a hemodialysis system comprises a user interface model layer, a therapy layer, below the user interface model layer, and a machine layer below the therapy layer. The user interface model layer is configured to manage the state of a graphical user interface and receive inputs from a graphical user interface. The therapy layer is configured to run state machines that generate therapy commands based at least in part on the inputs from the graphical user interface. The machine layer is configured to provide commands for the actuators based on the therapy commands.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: April 2, 2013
    Assignee: DEKA Products Limited Partnership
    Inventor: Michael J. Wilt
  • Patent number: 8382994
    Abstract: The present invention provides a composite pressure vessel containing a distributor plate. The distributor plate comprises a thermoplastic polymeric disk having a top side, a bottom side, a perimeter edge and a central opening. The disk is provided with a plurality of radial slits, which define fluid flow passages through the disk between the central opening and the perimeter edge. The fluid flow passages through the disk are adapted to swirl fluid flowing through the disk from the bottom side to the top side such that it swirls around the central opening. The perimeter edge of the distributor plate is joined to an inner side of a thermoplastic liner during or immediately after the thermoplastic liner is formed by a blow-molding process or a rotational molding process.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: February 26, 2013
    Assignee: Enpress LLC
    Inventors: Douglas S. Stolarik, Douglas M. Horner, Michael P. Mormino
  • Patent number: 8354031
    Abstract: A filtering system for water and other liquids includes different filtering stages in the same element, with its cleaning being done automatically by a new procedure. The filtering system includes a cylindrical outer casing with the pipe of the water to be filtered penetrating tangentially through its base, using centrifugal force in the first filtering stage to separate the particles with greater density. Then the liquid takes a helicoidal path and passes through different filtering devices, such as mesh or rings with the filtered and, therefore, clean water finally being collected in an appropriately perforated central pipe that comes out of the filter through the center of its lower base. The system is used for the cleaning of liquids, basically water, in agriculture for localized irrigation, in industry, or the environment.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: January 15, 2013
    Assignee: Universidad Politecnica de Madrid
    Inventor: Alfonso Cobos De La Fuente
  • Patent number: 8262753
    Abstract: An apparatus suitable for generating gaseous hydrocarbon fuel from a carbon based synthesis gas including a reaction chamber having a rotating shaft including a plurality of radial blades mixing and circulating carbon based synthesis gas and particulate catalyst upwardly generating gaseous hydrocarbon fuel, a stripping chamber located above the reaction chamber having a second axial rotating shaft including a plurality of radial blades driving hydrocarbon fuel radially outwardly, a source of hot stripping gas, an annular filter surrounding the stripping chamber and an annular gas collection chamber surrounding the filter. The blades in the stripping chamber are rotated independently at a greater velocity than the blades in the reaction chamber and the reaction is controlled by the temperature of the synthesis gas and the rotational velocity of the mixing blades in the reaction chamber.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: September 11, 2012
    Inventor: Bayne Carew
  • Publication number: 20120223020
    Abstract: Systems and methods for treating a stream comprising a hydrocarbon liquid and an aqueous-based liquid are provided. The systems and methods may utilize a media composite comprising a mixture of a cellulose-based material and a polymer. In certain systems and methods, the media composite is capable of being backwashed. The stream comprising the hydrocarbon liquid and aqueous-based liquid may be separated by contacting the stream with the media composite. In certain system and methods, the stream comprising the hydrocarbon liquid and aqueous-based liquid may be coalesced by contacting the stream with the media composite.
    Type: Application
    Filed: March 2, 2012
    Publication date: September 6, 2012
    Applicant: SIEMENS INDUSTRY, INC.
    Inventors: Chad L. Felch, Matthew Patterson, Shane Wiercinski
  • Publication number: 20120211430
    Abstract: The present invention relates to a porous media-mediated high speed filtration device for easy backwash, wherein the inflow water to be filtered is guided to an upper portion of the high speed filtration device and is filtered by downflow and porous media are backwashed for maintaining optimum filter efficiency by blocking the flow of inflow water and water to be treated after sensing the level of the inflow water or the change in the flux of the water to be treated, supplying backwash water and/or air by upflow through a backwash equipment to separate pollutants in the porous media by the collision and friction between the porous media by flowing of the porous media through the stream of the backwash water, placing the porous media in a stationary location, and discharging the pollutants through a discharge pipe of the high speed filtration device before the pollutants settle. In addition, the present invention comprises a backwash method of the high speed filtration device using porous media.
    Type: Application
    Filed: October 25, 2010
    Publication date: August 23, 2012
    Inventor: Jin Nak Choi
  • Patent number: 8227396
    Abstract: A method for cleaning process apparatus used for production of liquids, especially for cleaning filters, for example membrane filters. The apparatus is contacted with a solution of peroxydisulphate. It is especially preferred that the cleaning process is carried out at a temperature between 15 and 95° C.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: July 24, 2012
    Assignee: X-Flow B.V.
    Inventors: Arie Cornelis Besemer, Elmar Van Mastrigt, André Mepschen
  • Publication number: 20120040821
    Abstract: The present invention provides a process to clean water filtration media in a filtration bed. The process includes applying a granular cleaner to the water filtration media and applying an activator to the water filtration media. This causes a chemical reaction between the granular cleaner, activator and water filtration media resulting in the cleaning of the water filtration media. The residual granular cleaner and activator, along with suspended and dissolved contamination from the water filtration media, are removed by rinsing with water.
    Type: Application
    Filed: October 21, 2011
    Publication date: February 16, 2012
    Applicant: BLUE EARTH LABS, LLC
    Inventors: Ulrich Reimann-Philipp, Friedrich Wolfgang Zwanziger, Jeffrey Schulhoff
  • Patent number: 8110116
    Abstract: A water treatment apparatus includes a raw water supply tube, mixed raw water stream jet nozzles each communicating at one end thereof with the raw water supply tube and having at the other end thereof a raw water outlet from which mixed stream of raw water and air is jetted out, a filtering tank housing a filter layer disposed below the mixed raw water stream jet nozzles with a predetermined distance between the surface of the filter layer and the raw water outlet of the mixed raw water stream jet nozzles, a filtered water takeout tube provided in the filtering tank for taking out water filtered through the filter layer, a reverse stream cleaning water supply tube provided in the filtering tank for supplying reverse stream cleaning water to the filter layer, filter layer cleaning jet nozzles each communicating at one end thereof with a filter layer cleaning water supply tube and having at the other end thereof a cleaning water outlet from which cleaning water is jetted out, and an overflow outlet provided in
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: February 7, 2012
    Assignee: Nagaoka International Corporation
    Inventors: Hitoshi Mimura, Kiyokazu Mukai
  • Patent number: 8092693
    Abstract: Apparatus for inhibiting fines carryover in the form of a settlement tank comprising: a filter which divides the tank into upper and lower portions; a fluid inlet in the lower portion for admitting into the tank a fluid with entrained solids; and a fluid outlet in the upper portion through which filtered fluid can leave the tank. The filter comprises filter media supported on a permeable wall, the wall including a filter media outlet which is normally closed, and opening means for opening the filter media outlet to allow the filter media to discharge into the lower portion of the tank. The invention also relates to a method of refilling the filter with filter media.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: January 10, 2012
    Assignee: Cameron International Corporation
    Inventors: James Edward Delves, David John Parkinson, Simon Thomas Henry Brock
  • Patent number: 8017018
    Abstract: A phosphorus removal system is operable to remove phosphorus from an influent. The system includes a first section receiving the influent and discharging a first flow. A first coagulant inlet is positioned upstream of the first section and is in fluid communication with the influent to introduce a first coagulant selected to precipitate phosphorus. A second section receives the first flow and discharges a second flow, and a third section receives the second flow and discharges an effluent. A second coagulant inlet is positioned downstream of the first section and upstream of the third section to introduce a second coagulant selected to precipitate phosphorus.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: September 13, 2011
    Assignee: Siemens Industry, Inc.
    Inventors: Eric Allen Lawrence, Joseph E. Zuback
  • Publication number: 20110174746
    Abstract: The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media.
    Type: Application
    Filed: September 23, 2009
    Publication date: July 21, 2011
    Inventors: Chad L. Felch, Michael Howdeshell, Eric a. Lorge, Bryan J. Kumfer, Stuart J. Munson, Matthew Patterson
  • Publication number: 20110147321
    Abstract: A filter includes a filter chamber of adjustable volume. The filter chamber encloses a compactable filter medium through which fluid to be filtered may flow. The filter medium includes a plurality of filter particles. A filter particle has an initial shape and is deformable upon application of a deforming force, being capable of substantially regaining its initial shape upon removal of the deforming force. The porosity of the filter medium is adjustable by adjusting the volume of the filter chamber so as adjust the compaction of the filter medium.
    Type: Application
    Filed: August 10, 2009
    Publication date: June 23, 2011
    Inventor: Nir Oz
  • Publication number: 20110073549
    Abstract: A media retainer assembly for retaining filter media in a filter assembly includes a top plate for supporting the filter media, the top plate having a top surface, a bottom surface and a plurality of openings extending therethrough; a bottom plate having a top surface and a plurality of openings extending therethrough; and scouring media, the scouring media being adapted to abrade the surfaces of the top and bottom plates. The top plate is connected to the bottom plate such that the top surface of the bottom plate is spaced from the bottom surface of the top plate to define at least one chamber between the top plate and the bottom plate. The top surface of the top plate is in fluid communication with the chamber via the openings in the top plate. The scouring media is supported by the bottom plate within the at least one chamber.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Applicant: ITT WATER & WASTEWATER LEOPOLD, INC.
    Inventors: John L. Geibel, Christopher J. Ball
  • Patent number: 7842001
    Abstract: An automatic priming method in which an arterial-side chamber is maintained in a normal position during priming, as in a case of dialysis treatment, and in which forward and backward rotations of a blood pump are employed, and a speed of rotation, in particular, backward rotation, is adjusted to be low, so that air or the like is reliably prevented from entering a dialyzer. The priming method for use in a blood purification circuit in which priming is conducted by supplying physiological saline into a circulation circuit formed by connecting an arterial blood circuit with a venous blood circuit includes filling the venous blood circuit with a priming solution (physiological saline), discharging the priming solution for cleaning the arterial blood circuit, conducting a treatment in a direction opposite to the overflow step, which may be followed by a forward direction re-circulation step, and re-circulating in a forward direction.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: November 30, 2010
    Assignee: JMS Co.
    Inventors: Katsunori Masaoka, Takashi Doi, Kaoru Kushiyama
  • Publication number: 20100213143
    Abstract: Apparatus for inhibiting fines carryover in the form of a settlement tank comprising: a filter which divides the tank into upper and lower portions; a fluid inlet in the lower portion for admitting into the tank a fluid with entrained solids; and a fluid outlet in the upper portion through which filtered fluid can leave the tank. The filter comprises filter media supported on a permeable wall, the wall including a filter media outlet which is normally closed, and opening means for opening the filter media outlet to allow the filter media to discharge into the lower portion of the tank. The invention also relates to a method of refilling the filter with filter media.
    Type: Application
    Filed: May 13, 2010
    Publication date: August 26, 2010
    Applicant: Cameron International Corporation
    Inventors: James Edward Delves, David John Parkinson, Simon Thomas Henry Brock
  • Patent number: 7763174
    Abstract: The present invention pertains to a reverse-flow reactor comprising at least one catalyst bed which is preceded and followed by at least one bed containing selectively adsorbing material, and its application for in a process for the removal of contaminants from a process stream.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: July 27, 2010
    Assignee: Shell Oil Company
    Inventors: Alouisius Nicolaas Renée Bos, Girish Rajkumar Kabra, Jean-Paul Lange
  • Publication number: 20100102010
    Abstract: A vortex generator for use in a fluid filter operable in both a normal filtering mode and a back flushing mode. The vortex generator including a flapper valve that moves between an open position and a closed position in correspondence to the direction of fluid flow through the fluid filter. In the open position, fluid is permitted to flow through openings formed in a base of the vortex generator. In the closed position, fluid is prevented from flowing through the openings.
    Type: Application
    Filed: October 28, 2008
    Publication date: April 29, 2010
    Inventor: Alvin E. Nuckols, JR.
  • Patent number: 7655151
    Abstract: A fluid treatment and media management device having concentric inner and outer perforated cylinders defining a chamber therebetween for containing a media. A case surrounds the perforated cylinders and forms an annular space between the case and the outer perforated cylinder. Respective end caps engage the opposite ends of the case and perforated cylinders to support such members. One or both of the end caps provide ports to the central core of the inner perforated cylinder, to the media chamber and to the annular space. The media can be removed from the fluid treatment and media management device without disassembly of the device for the purpose of disposal and/or regeneration of the media.
    Type: Grant
    Filed: June 12, 2004
    Date of Patent: February 2, 2010
    Inventor: John D. Martin
  • Publication number: 20090277848
    Abstract: A water recycling tank 40 for a filtration system 10 including a filter 30 and pump 20, the tank: (a) in communication with the filter and the pump; (b) that has a substantial height difference between the upper internal space and the lower internal space of the tank whereby the tank is adapted to permit water-borne sediments 47 to settle near the base 52 of the tank over time; (c) has a waste outlet 44 near or on the base; (d) has a recycling outlet 43 above the waste outlet and in communication with the pump; and (e) has an inlet 42 above the recycling outlet in communication with the filter.
    Type: Application
    Filed: May 6, 2008
    Publication date: November 12, 2009
    Inventors: David A. Slade, Anthony P. Marchmont, Roland V. Burgers
  • Publication number: 20090277849
    Abstract: A filter apparatus may be provided. The filter apparatus may include a multi-port valve; a strainer coupled in flow communication to the multi-port valve, wherein the strainer may include a conical portion and an attachment portion extending away therefrom; a diffusing column coupled to the strainer and coupled in flow communication to the multi-port valve; and an equalizer column coupled in flow communication to the strainer.
    Type: Application
    Filed: May 6, 2009
    Publication date: November 12, 2009
    Applicant: Seagate Filters, Inc.
    Inventor: Hung Hoang
  • Publication number: 20090152211
    Abstract: Hot Water Sterilization of Activated Carbon beds or other adsorbents in filter tanks by including an electric or steam heating coil in the tank, alternately in the gravel underdrains, or in a plenum underdrain, or in an external canister.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 18, 2009
    Applicant: Idrecousa, Ltd.
    Inventors: George J. Crits, William J. Runyan
  • Patent number: 7494592
    Abstract: Process involving repeatedly applying some of the liquid composition to the granular filter media to remove water from the liquid composition by passing through the granular filter media with the particulate solids collecting on top surface of granular filter media. Water is first allowed to fill from below to just above the top layer of the filter media. A non-porous liner is located on the inner, bottom surface of the container. A drain pipe, having small openings, is located on top of the liner in the valley. A porous layer of large filter media, with the drain pipe therein, is located in the bottom of the container. A grid having open passageways, with fine filter media therein, is located on top thereof. A layer of fine filtrate sand is located on top of the grid.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: February 24, 2009
    Inventor: Franklin David Deskins
  • Publication number: 20090045149
    Abstract: An apparatus, system, and method for removing sediment from water is disclosed. According to one embodiment of the present invention, the apparatus includes a tubular filter assembly comprising a support member; and a filtratable element surrounding the support member, the filtratable element comprising a backing mesh; and a fibrous batting. A system for removing sediment from water is disclosed. According to one embodiment, the system includes a filter chamber to receive a liquid having suspended particles therein; at least one filtration cartridge housed within the filter chamber, wherein the filtration cartridge comprises at least one elongated filtratable element, each filtratable element comprising a support member, and a filtratable media adapted to surround the inner core. A method for removing sediment from water is disclosed.
    Type: Application
    Filed: August 15, 2007
    Publication date: February 19, 2009
    Inventors: Christopher Adam Murray, Darren Francis Kevin Lawless
  • Patent number: 7445716
    Abstract: Methods and apparatus for increasing the duration of uninterrupted filtering flow by using crossflow filtration and ultrasonic energy with in difficult to filter process liquids (e.g. of the kind having (1) a carrier liquid, (2) coalescing solids particles which tend to adhere and bridge filter element gaps sized substantially larger than such particles, and (3) larger impurity elements to be filtered out of such process liquid and sized larger than such filter element gaps).
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: November 4, 2008
    Assignee: Eaton LP
    Inventors: Mark A. Quintel, Christopher S. Rau, Michael E. Isch
  • Publication number: 20080099411
    Abstract: A system and method for uniformly distributing fluids (e.g., washing and in-service) through a filter bed of a filter. The system and method of the present invention can be used with any type of filter that uses media to remove impurities from a fluid. The filter bed can include one or more layers of media. The media can be natural (e.g., sand, gravel, anthracite, etc.) or can be fabricated (e.g., plastic). The filter media can be supported by one or more layers of gravel. Alternatively, the filter media can be supported by a porous plate or other support designed to replace the gravel layers. The present invention includes a system having a distribution member configured to uniformly distribute a fluid through a filter bed of a filter. Preferably, the distribution member can be readily installed by relatively unskilled labor in both existing filters and new filters. The distribution member is preferably configured to occupy only a small percentage of space in a distribution chamber (e.g., a flume).
    Type: Application
    Filed: October 27, 2006
    Publication date: May 1, 2008
    Inventors: R. Lee Roberts, Mark Kevin Addison
  • Publication number: 20080099412
    Abstract: A system and method for uniformly distributing fluids (e.g., washing and in-service) through a filter bed of a filter. The system and method of the present invention can be used with any type of filter that uses media to remove impurities from a fluid. The filter bed can include one or more layers of media. The media can be natural (e.g., sand, gravel, anthracite, etc.) or can be fabricated (e.g., plastic). The filter media can be supported by one or more layers of gravel. Alternatively, the filter media can be supported by a porous plate or other support designed to replace the gravel layers. The present invention includes a system having a distribution member configured to uniformly distribute a fluid through a filter bed of a filter. Preferably, the distribution member can be readily installed by relatively unskilled labor in both existing filters and new filters. The distribution member is preferably configured to occupy only a small percentage of space in a portion of the filter system (e.g.
    Type: Application
    Filed: November 30, 2006
    Publication date: May 1, 2008
    Inventors: R. Lee Roberts, Mark Kevin Addison
  • Patent number: 7341662
    Abstract: A filtration vessel has an inlet for inflow into the filtration vessel of liquid media to be filtered, a body of filter media in the filtration vessel, and a drain to receive filtered liquid media for take off from the filtration vessel. The inlet is configured to induce rotating flow about the vessel of unfiltered liquid present in the vessel; and/or, the drain is configured in backwash mode to force backwash liquid through the filter media in rotating flow about the vessel; and/or the drain includes drain limbs inclined to the horizontal and providing for draining of filtered liquid along the inclined limbs to outlet.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: March 11, 2008
    Inventors: Derek Colin Tolley, Asheley Derek Tolley
  • Patent number: 7326351
    Abstract: A filter underdrain system and a method for measuring the water flow through the underdrain filter system. The apparatus includes panel members assembled to form a perforate grid on the filter base structure of an underdrain block. The panels are generally rectangular and have an upper and lower surface. Multiple apertures are provided in the panel member. The number and/or size of the apertures are dimensioned to prevent the egress of filter media and to obtain substantially uniform backwash flow in the underdrain thereby reducing or eliminating water maldistribution.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: February 5, 2008
    Inventors: David Hambley, Philip Hambley
  • Patent number: 7270755
    Abstract: Presented is a liquid filtering apparatus and method that overcomes the disadvantages encountered with prior bed filtration systems by providing a filtering apparatus that incorporates a super-buoyant filter medium having a specific gravity very substantially lower than that of the process liquid being filtered. This feature enables a majority of the medium to float on top of the process liquid. Due to the significant differences in specific gravity between the media and the process liquid, super-buoyant media produce a highly advantageous means of naturally, gravimetrically separating both clean and contaminated filter media and process liquid into separate “phases”. Under normal filtering operation, the filter media is contained within a filter housing by a bed support near the top of the filter housing, and particulate material is filtered from a process liquid that passes through the housing.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: September 18, 2007
    Inventor: Steven H. Schwartzkopf
  • Publication number: 20070187342
    Abstract: This invention provides a device for removing particulates from a liquid. The invention comprises a first chamber having an outlet and an inlet, operably configured to receive into the first chamber a liquid stream having particulates suspended therein. The device further includes a second chamber having an inlet, a top, a bottom, a processed liquid outlet and a sealable settlement outlet, the inlet being in fluid communication with the outlet of the first chamber and being disposed within the second chamber closer to the bottom of the second chamber than the top; and, a third chamber being in fluid communication with the processed water of the second chamber and having an exit line operably configured to deliver processed water. The first chamber further includes a floor and the inlet of the first chamber is operably configured to direct the liquid stream is a direction substantially parallel to the floor.
    Type: Application
    Filed: February 12, 2007
    Publication date: August 16, 2007
    Inventors: Cort ABNEY, Scott Myers
  • Patent number: 7204930
    Abstract: An oxidation filtration system for cleaning groundwater, the system having an aeration tower and a filtration tank. Within the filtration tank is an upper chamber and a lower chamber. Contained within the lower chamber is a plurality of Styrofoam™ filter media. Separating the upper chamber from lower chamber is a filter media mash which keeps the filter media from entering into the upper chamber. The aerated water from the aeration tower enters into the base of the lower filter chamber and rises through the filter media into the upper filter chamber. As the water passes through the filter media, the dissolved solvents fallout of the groundwater and attach themselves to the Styrofoam™ media. An automated back flushing and clarifying process is also provided using a back flush port and a clarification port, a higher level water sensor in the aeration tower and a programmable logic controller.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: April 17, 2007
    Assignee: Skagit Farmers Supply
    Inventor: William Nightingale
  • Patent number: 7192521
    Abstract: A filtration system that includes a plurality of underdrain blocks arranged to define a plurality of laterals. Each underdrain block defines an interior and an exterior and has an orifice that provides fluid communication between the exterior and the interior. The system also includes a plurality of media retaining plates. Each plate includes a plurality of slots that extend through the plate. Each slot has an average width of less than 0.065 inches. Each plate connects to only one of the plurality of underdrain blocks such that the slots provide fluid communication between the exterior and the orifice of the underdrain block to which the plate is attached.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: March 20, 2007
    Assignee: Siemens Water Technologies Corp.
    Inventor: Darin St. Germain
  • Patent number: 7090771
    Abstract: The invention is directed to a filter underdrain for supporting a filter media between at least two dividers forming at least one cell, which includes at least one porous plate for supporting the filter media for filtering a fluid, the porous plate spanning across at least one of the dividers; and a plurality of support members beneath the porous plate, the support members containing at least one port for draining the fluid after the fluid passes through the porous plate. The porous plates may be bound together by a lap joint and an end section may be included between at least two of the support members, the end section containing at least one pocket for holding the porous plate.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: August 15, 2006
    Assignee: Infilco Degremont, Inc.
    Inventors: John D. Dyson, Jack H. Jessop, Harold W. Johnson, Jr., Louis U. Brittingham, Jr., Gregory Matanoski
  • Patent number: 7063787
    Abstract: The invention recites a filtration tank including a chamber for holding liquid to be filtered, the filtration tank includes a fluid inlet for providing liquid to the chamber. The filtration tank further includes a fluid outlet and at least one filter block disposed between the inlet and the outlet, wherein the at least one filter block includes a porous cap having an average pore size of up to about 250 microns.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: June 20, 2006
    Assignee: USFilter Corporation
    Inventors: Scott Jackson, Darin St. Germain, Thomas J. Steinke, Paul M. Gallagher
  • Patent number: 7045067
    Abstract: The filter contaminant loading capacity of a depth granular media filter is increased by imposing a so-called “back-slip” on the filter bed. At intervals between normal backwashing, a volume of liquid is passed upwardly through the media bed under flow conditions selected to displace at least some of the contaminants upwardly in the bed while essentially removing none of the contaminants from the filter vessel. Preferably, the filter bed comprises at least two media types of different but uniform particle sizes and densities, the media types each forming a distinct layer in which the effective particle size of the media in each successive layer decreases in a downward direction in the vessel.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: May 16, 2006
    Assignee: Eco-Tec Limited
    Inventors: Craig J. Brown, Michael A. Sheedy
  • Patent number: 6991726
    Abstract: The invention recites a filtration system including a block including a first wall and a second wall substantially parallel to the first wall. A top surface that is substantially perpendicular to the first wall is disposed between, and coupled to, the first and second walls to at least partially define an inner chamber. The top surface further includes an orifice defining a passageway between a block exterior and the inner chamber. A plate including a plurality of slots, each slot having a width of less than about 0.065 inches, and a slot outlet, is coupled to the top surface of the block. The slot outlets in the plate are substantially coplanar and the plate, when coupled to the block, substantially covers the orifice.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: January 31, 2006
    Assignee: USFilter Corporation
    Inventor: Darin St. Germain
  • Patent number: 6942795
    Abstract: A modular filter system and a method of repairing and/or replacing one or more components thereof. The modular filter system includes a traveling backwash hood assembly and a plurality of filter cells having media contained therein. The traveling backwash hood assembly includes a hood and a baffle assembly. Preferably, the hood has at least one opening formed therein and a cover plate operably associated with the at least one opening. The baffle assembly includes a plurality of baffles for directing the flow of fluid. The baffle assembly is detachably connected to the hood to permit the baffle assembly to be moved relative to the hood to permit an individual to readily gain access to the baffle assembly to repair or replace one or more components thereof.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: September 13, 2005
    Assignee: RG Delaware, Inc.
    Inventors: R. Lee Roberts, Mark Kevin Addison
  • Patent number: 6936176
    Abstract: A transportable water treatment system comprising: an inlet adapted to receive water having a pressure of between 10 to 60 psig, a primary regenerable filter connected so as to receive water that has flown through the inlet, the primary regenerable filter configured to separate solids from water flowing therethrough, a secondary regenerable filter, the secondary regenerable filter connected downstream from the primary regenerable filter, and a chemical feed unit connected downstream of said secondary regenerable filter, the chemical feed unit configured to treat water flowing through introduction of chemicals to the water, a water discharge pipe adapted to discharge treated water from the chemical feed unit, where said inlet, the primary regenerable filter, the secondary regenerable filter, the chemical feed unit, and the discharge pipe make up a transportable water treatment and the transportable water treatment is adapted to fit within a bed of a sub-compact pickup truck.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: August 30, 2005
    Assignee: Water Missions International
    Inventors: George C. Greene III, George C. Greene IV, Sean P. Kerrigan
  • Patent number: 6921481
    Abstract: The invention is directed to an automatic backwash filter system that includes at least one influent port for introducing a fluid to the filter; a plurality of partitions forming a plurality of compartments for holding a filtering media for filtering the fluid; at least one porous plate for supporting the plurality of partitions; wherein each of the partitions is mounted atop a continuous portion of the porous plate; and at least one effluent port for draining the fluid away from the compartments. The filter may also include a filter media comprising one or more selected from the group consisting of sand, anthracite coal, and activated carbon.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: July 26, 2005
    Assignee: Ondeo Degremont, Inc.
    Inventors: Jack H. Jessop, Harold W. Johnson, Jr.
  • Patent number: 6878293
    Abstract: A filtration and backwash system for a water source such as a swimming pool is provided including a fluid source, a pump, a filter and a specially designed five-port valve which is easily adaptable for automatic use in the filtration mode and in the backwash mode. The valve uses a rotatable deflector plate which is positioned to divert the fluid in one direction in the valve for the filtration process and is positioned to divert the fluid in the other direction in the valve for the backwash process. An automatic timing device is also provided and is particularly suitable for use in conjunction with the valve whereby no manual intervention or electronic means is needed to change the valve from the filtering mode to the backwash mode or vice versa. The timing device automatically senses the pressure buildup in the filtration system due to accumulation of debris in the filter and automatically changes the valve from the filtration mode to backwash mode when a predetermined system pressure is exceeded.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: April 12, 2005
    Inventors: Raymond E. Portyrata, Thomas Wallace
  • Patent number: 6821445
    Abstract: The present invention is aimed at treating rainwater in a combined sewer system, while enabling removal of a majority of pollution substances even if a large amount of entering rainwater. The invention relates to a rainwater-treating apparatus in a combined sewer system, said apparatus comprising a plurality of upward flow type high-speed filter vessels each having a layer of a floating filter medium, a common treated water vessel which is located at upper faces of said high-speed filter vessels and is adapted to collect treated water from the high-speed filter vessels, a used wash water vessel which collects used wash water from said high-speed filter vessels, a rainwater inflow channel for distributing the entering rainwater into upper portions of the high speed filter vessels, and rainwater inflow portions for flowing downwardly the rainwater distributed from the rainwater inflow channel under the respective floating filter media of the filter vessels.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: November 23, 2004
    Assignee: NGK Insulators, Ltd.
    Inventors: Atsushi Miyata, Yoshihiko Nakayama
  • Publication number: 20040226897
    Abstract: The present invention provides an apparatus and method for filtering fluids with a compressible filter media within at least a portion of a housing inwardly compressible.
    Type: Application
    Filed: January 29, 2004
    Publication date: November 18, 2004
    Inventors: Mark C. Boner, Paula K. Gurney
  • Patent number: 6775577
    Abstract: In a medical device, a Tx Clock Button is presented on a graphics display overlain with a touch screen which allows an operator to control multiple functions of the medical device. Various parts of Tx Clock Button may be displayed in different colors, and based on the state of treatment at a given time and in response to the operator touching Tx Clock Button, the colors may change to visually indicate a change in state. When the Tx Clock Button is touched for the first time after a new patient has been selected, multiple functions, times, displays, parameters, and alarms of the medical device are initiated. When the Tx Clock Button is touched for the second time, various ones of the multiple functions, times, displays, parameters, and alarms may be suspended. A third touch of the Tx Clock Button may resume the suspended items.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: August 10, 2004
    Assignee: Fresenius USA, Inc.
    Inventors: Martin J. Crnkovich, Christian Schlaeper, Scott N. Walker