Backwash Or Blowback Patents (Class 210/411)
  • Patent number: 11278826
    Abstract: A filter device has a filter housing (1) having a fluid inlet (11) for unfiltered matter, a fluid outlet (19) for filtered matter and at least one filter element (7, 9) of one or more parts accommodated in the filter housing (1). The filter element can be cleaned using at least one backwash element (21) in counter current to the direction of filtration. The backwash element can be moved by a fluid-conveying drive shaft (20) of a rotary drive at the inside (17) of the relevant filter element (7, 9). At the end adjacent to this inside (17), a gap-shaped passage opening is parallel to the axis of rotation (16) of the drive shaft (20) and opens into a flow chamber connected to the drive shaft (20) in a fluid-conveying manner. The distance between the backwash element (21) and the adjacent assignable filter element (7, 9) can be predetermined by an adjustment device (27; 47).
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: March 22, 2022
    Assignee: HYDAC PROCESS TECHNOLOGY GMBH
    Inventors: Manfred Deutschmeyer, Albert Kaints
  • Patent number: 11260570
    Abstract: Filtration apparatuses and screen changer devices for filtering polymeric material as well as spacer plates, and face plates for the screen changer devices and related methods are shown and described herein.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: March 1, 2022
    Assignee: PSI-Polymer Systems, Inc.
    Inventors: James E. Rosamond, III, David C. Woodcock
  • Patent number: 11235265
    Abstract: A suction adapter for filtration systems is disclosed. The suction adapter is useful for filtration systems in which there are screen regions unapproachable by intake openings of nozzles of the suction scanner, such as the case with pleated screens. The suction adapter comprises a partitioning adapted to match within a space-extension of a predetermined size and shape, whereby being useful for tunneling a suction power from an intake opening of the suction scanner to a screen region unapproachable by the intake opening. A method for cleaning a filtration screen having screen regions gapped from a closest approach of an intake opening of a suction scanner is disclosed. The method comprises providing immovable tunneling means between the screen regions and a location of the closest approach, whereby tunneling a suction power of the suction scanner to respective spots on the screen regions when closely approached, respectively, by the intake opening.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: February 1, 2022
    Assignee: AMIAD WATER SYSTEMS LTD.
    Inventors: Oded Matas, Boaz Zur
  • Patent number: 11187122
    Abstract: A diesel particulate filter cleaning machine. The filter is filed with a soaking solution comprising water and a surfactant and retained within the filter during a soaking interval. The filter is placed in a rinsing station after the soaking interval. A rinse water head positioned above an upper surface of the filter supplies rinse water into the filter, the rinse water passes through and drains from the filter. During the rinsing process, an actuator moves the rinse water head relative to the upper surface of the filter. A drain receives the rinse water after draining from the filter.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: November 30, 2021
    Assignee: EcoClean Advantage, LLC
    Inventors: Bryan J. Case, Gregory J. Lukins, David L. Butler
  • Patent number: 11034599
    Abstract: A system for treatment of a polluted effluent, includes an outer chamber configured to treat the polluted effluent in mixture with a purification slurry including particles of one or more catalysts and/or organoclays, or a mixture thereof. The outer chamber includes (i) a stirring unit consisting of an engine and a stirrer, configured to mix the polluted effluent and the purification slurry to prevent the particles from sinking without causing a turbulence, (ii) a membrane located at the top of the outer chamber through which a treated effluent passes, while preventing the particles of one or more catalysts and/or organoclays from exiting the outer chamber together with the treated effluent, (iii) a membrane cleaning system configured to remove and collect the particles of one or more catalysts and/or organoclays accumulated on the membrane, and re-introducing the particles back to the bottom of the outer chamber.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: June 15, 2021
    Assignee: GAVISH-GALILEE BIO APPLICATIONS LTD
    Inventors: Giora Rytwo, Gonen Daskal
  • Patent number: 10933620
    Abstract: This invention concerns an additive manufacturing apparatus for building a part by selectively consolidating flowable material in a layer-by-layer process comprising a build chamber (101) for building the part, a module (105, 106) for providing a focussed energy beam for consolidating flowable material in the build chamber, a gas flow circuit for generating a gas flow through the build chamber (101). At least one filter assembly (200, 201) may be arranged in the gas flow circuit, the or each filter assembly (200, 201) having associated therewith a valve (V-4, V-8) operable to seal the gas circuit upstream from the filter assembly (200, 201) and a valve (V-5, V-9) operable to seal the gas flow circuit downstream of the filter assembly (200, 201), the arrangement allowing a filter element (E-5, E-7) of the filter assembly (200, 201) to be changed whilst maintaining a controlled atmosphere in the build chamber (101).
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: March 2, 2021
    Assignee: RENISHAW PLC
    Inventors: Christopher John Sutcliffe, Jason Joannou, Jack Dunkley, Ramkumar Revanur
  • Patent number: 10688419
    Abstract: A debris filter has a housing, a filter screen mounted to the housing and disposed so as to extend across a flow path through the housing, a debris extractor mounted to the housing, and a splitter bar also mounted to the housing. The debris extractor and the filter screen are so mounted to the housing as to enable rotation of the filter screen and the debris extractor relative to one another. The debris extractor has a debris intake opening and the debris extractor and the splitter bar are so mounted to the housing that the intake opening is positionable adjacent to or in juxtaposition with the splitter bar with the splitter bar overlapping and shielding the intake opening.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: June 23, 2020
    Assignee: OVIVO INC.
    Inventor: Andrew L. Browning
  • Patent number: 10632403
    Abstract: The present invention relates to an a multi-cage type ballast water filtering apparatus having a function of automatically controlling simultaneous backwashing, and a method of automatically controlling the simultaneous backwashing. The apparatus includes a body, and filtering units connected to each other to form a packaged structure in the body. Each filtering unit includes a filter filtering ballast water, and an automatic washing unit backwashing the filter. The apparatus further includes a first pressure sensor measuring the pressure in space between the body and the filters, and a second pressure sensor installed on each of some of the filtering units to measure the pressure in the filter of the corresponding filtering unit. When a difference between pressures measured by the first and second pressure sensors exceeds a predetermined range, the automatic washing units of all of the filtering units are simultaneously operated.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: April 28, 2020
    Assignee: Panasia Co., LTD
    Inventors: Soo-Tae Lee, Tae-Sung Pyo, Su-Kyu Lee
  • Patent number: 10391428
    Abstract: A pressure filter for treating liquor suspensions of a cellulose pulp mill, the pressure filter including a container having tubular filtering elements suspended in a horizontal plate, through which elements filtrate flows and the interior of which communicates with a filtrate chamber located above. The filtering elements collect on their outer surface precipitate that is arranged to be periodically removed by making the filtrate in the filtrate chamber travel counter-currently through the filtration surface of the filtering elements. The filtering elements are cleaned by wash liquid passing from the filtrate chamber into the filtering elements and through their filtration surface. The interior of the filtering elements is provided with a flow distributor above the middle of a filtering element for distributing the flow from the filtrate chamber onto the filtration surface of the filtering element.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: August 27, 2019
    Assignee: Andritz Oy
    Inventors: Ilkka Holopainen, Jari Paykkonen
  • Patent number: 10238998
    Abstract: A backflush filter for liquid media, having a filter housing, which is formed by means of at least one supporting cage, which has at least two groups of slot-type apertures, and at least one filtering means supported on the supporting cage, where-in the apertures of each group extend in parallel alignment with one another and are separated from one another by ribs, and having a backflushing device, which is arranged in the interior of the filter insert, is rotatable and has at least one slit, said backflushing device being designed for flushing of the filtering means via the slit and apertures. The direction of motion of the backflushing device can be reversed during the backflush cycle and a filter insert therefore, wherein the backflush filter and the filter insert include a filtering means having a pleated, preferably multi-ply, filter fabric or filter cloth with pleating folds, and the ribs fit by means of a rib front into respective pleating folds.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: March 26, 2019
    Assignee: Boll & Kirch Filterbau GmbH
    Inventors: Karsten Cartarius, Andreas Finsel, Willi Rott
  • Patent number: 9678031
    Abstract: A biochip including a plate-like diaphragm part provided with a through-hole, a wall part provided at an outer periphery of the diaphragm part, and a reinforcing part formed in a portion other than the through-hole in the diaphragm part.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 13, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takahiro Nogami, Takeki Yamamoto
  • Patent number: 9561454
    Abstract: A debris filter has a housing, a filter screen mounted to the housing and disposed so as to extend across a flow path through the housing, a debris extractor mounted to the housing, and a splitter bar also mounted to the housing. The debris extractor and the filter screen are so mounted to the housing as to enable rotation of the filter screen and the debris extractor relative to one another. The debris extractor has a debris intake opening and the debris extractor and the splitter bar are so mounted to the housing that the intake opening is positionable adjacent to or in juxtaposition with the splitter bar with the splitter bar overlapping and shielding the intake opening.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: February 7, 2017
    Assignee: OVIVO INC.
    Inventor: Andrew L. Browning
  • Patent number: 9550217
    Abstract: According to one embodiment, a method for cleaning and requalifying a component of an exhaust aftertreatment system includes inspecting the component using an x-ray processing technique. The method further includes associating the plurality of cleaning techniques with a plurality of compositions of material, and cleaning the component according to at least one of the plurality of cleaning techniques associated with the composition of material.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: January 24, 2017
    Assignee: CUMMINS IP, INC.
    Inventors: Todd M. Wieland, Leslie E. Freeman, David G. Eames, Duane J. Szymanski, Mark G. Tang, William A. MacGregor, Leigh A. Rogoski
  • Patent number: 9550557
    Abstract: A filtering device for treating ballast water and more particularly, a multicage-type device for filtering ballast water to prevent back pressure, wherein the multicage-type device for filtering ballast water includes a back pressure prevention tank on a backwash line for backwashing and discharging foreign substances that are inside a filter of the device for filtering, so that backwash water and the foreign substances in the backwash line are preliminarily stored in the back pressure prevention tank thereby preventing an increase of back pressure and preventing an increase of the back pressure on the backwash line by always maintaining a level of water inside the back pressure prevention tank at lower than an inlet port that is connected to the backwash line.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: January 24, 2017
    Assignee: Panasia Co., Ltd.
    Inventors: Soo-Tae Lee, Tae-Sung Pyo, Su-Kyu Lee
  • Patent number: 9545588
    Abstract: A device for filtering treating ballast water by way of a filtering method, and more particularly, to a compact and operability-enhancing multicage-type device for filtering ballast water, which distributes a lower portion of the device for filtering a discharge portion for discharging foreign substances after backwashing a filter and a backwash line, among features that are concentrated at an upper portion of the device for filtering, and communicates discharge tubes of each filtering unit in a single line, by considering the unique installation environment of the device for filtering that is coupled to a ship, thereby simplifying structure, reducing space required for installing the device for filtering in the upper portion of the device for filtering, allowing efficient maintenance by integrating foreign substance discharge and back pressure maintenance of each of the filtering units.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: January 17, 2017
    Assignee: Panasia Co., Ltd.
    Inventors: Soo-Tae Lee, Tae-Sung Pyo, Su-Kyu Lee
  • Patent number: 9446074
    Abstract: A method of producing a platelet solution replaced with an artificial preservation solution includes a filtering step of carrying out cross-flow filtration of a platelet solution under the conditions of Formula (1) at an inlet wall shear rate of 25 to 1500 s?1 using a separation membrane whose surface which contacts with the platelet solution has an average pore size of not less than 0.1 ?m and less than 2.0 ?m, thereby obtaining a concentrated platelet solution; and a mixing step of mixing the concentrated platelet solution with an artificial preservation solution to obtain the platelet solution replaced with an artificial preservation solution: 1.0×1011<(A×B)/(?×?P)?2.5×1013 (platelets/(hr·m2·Pa))??(1) A: Concentration of platelets contained in the platelet solution (platelets/mL; with the proviso that the range is 8.0×107 to 200×107 platelets/mL) B: Filtration flow rate per unit area (mL/hr/m2) ?: Inlet wall shear rate (s?1) ?P: Viscosity of the platelet solution (Pa·s).
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: September 20, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Tatsuya Kishikawa, Masahiro Osabe, Yoshiyuki Ueno, Masaaki Shimagaki, Shigenori Tanaka, Tomoya Hayashi
  • Patent number: 9422661
    Abstract: A pump assembly for a washing machine appliance is provided. The pump assembly includes a casing that receives a filter. The filter includes a labyrinth filter portion and a mesh filter portion. A drain pump is in fluid communication with the labyrinth filter portion, and a recirculation pump is in fluid communication with the mesh filter portion. Related washing machine appliances are also provided.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: August 23, 2016
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Paul Douglas Mantle, Lawrence Thomas
  • Patent number: 9415332
    Abstract: A self-purging filtering apparatus having a pressure vessel connected for discharging clean filtrate to subatmospheric pressure at a pump inlet. Actuators connected to an outwardly extending rod move a wiper piston to scrub the upstream side of an annular filter media element. The piston moves a main valve member to isolate a purge chamber from the filtering chamber. Remotely operated valves control flushing of the purged chamber. The main valve has a bleed valve to provide pressure equalization for facilitating main valve movement.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 16, 2016
    Assignee: Eaton Corporation
    Inventors: Brandon L. Shaw, Christopher Scott Rau
  • Patent number: 9310497
    Abstract: A sampling unit that samples a sample gas includes an intake pipe that takes in a sample gas, and a mist/dust elimination unit that eliminates mist produced when steam in a sample gas condenses in the intake pipe and dust, creates a drain including dust, and separates the drain from the sample gas; mist wets fibers loaded therein in a stacked manner so that a water film produced on the surface of the fibers collects dust, and the water film grows to water drops and become drains so that the dust is exhausted and eliminated.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: April 12, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kenichi Moteki, Shohei Katayama
  • Patent number: 9138665
    Abstract: A filter system for filtering particles from a liquid includes an underdrain assembly having an underdrain defining at least one underdrain chamber and a media retainer assembly. The media retainer assembly includes an upper filter media retainer plate defining a plurality of hopper-shaped cavities and a lower filter media retainer plate defining a plurality of hopper-shaped cavities corresponding to the plurality of hopper-shaped cavities on the upper plate. The plates are in a nested arrangement such that the hopper-shaped cavities on the upper plate are in alignment with the corresponding plurality of hopper-shaped cavities on the lower plate to define a plurality of passages therebetween and allow for the passage of the liquid while preventing the passage of a filter media. During a backwash operation, the upper and lower plates are relatively moveable such that the backwash fluid releases any particles lodged in the passages between the plates.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: September 22, 2015
    Assignee: XYLEM WATER SOLUTIONS ZELIENOPLE LLC
    Inventors: Christopher J. Ball, Brian J. Bates, Howard James Sweeney
  • Publication number: 20150129483
    Abstract: A backwash arrangement for cleaning a cylindrical filter screen includes a cylindrical filter screen within which extends an axial central conduit. A number of radial branch conduits extend outwards from the central conduit towards the cylindrical filter screen, each provided with a spring-loaded nozzle arrangement. The spring-loaded nozzle arrangement is biased into contact with the cylindrical filter screen, and includes a nozzle opening for passing across the cylindrical filter screen, and a pair of wheels deployed on opposing sides of the nozzle opening for rolling engagement with the cylindrical filter screen.
    Type: Application
    Filed: November 10, 2013
    Publication date: May 14, 2015
    Applicant: Yamit Filtration & Water Treatment Ltd.
    Inventors: Arie Mauda, Oded Elish, Rey Zeeman
  • Publication number: 20150129508
    Abstract: A method of filtering contaminants from a fluid is disclosed. A feedstream of fluid containing contaminants is directed into a filter chamber containing a filter element. Part of the feedstream fluid flows in one of: a forward flow direction where it passes in a first direction through a wall of the filter element; and a reverse flow direction where it passes in a second, opposite direction through the wall. The filtrate is directed into a flowline for collection. The feedstream fluid is then arranged to flow through the filter element in the other direction, to remove contaminant material from a surface of the element wall. Following removal of contaminant material, the feedstream fluid is continued to be directed through the wall of the filter element in said other direction, to filter out contaminants from the fluid during flow in said other direction.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 14, 2015
    Inventor: Christopher William Sweeney
  • Publication number: 20150122723
    Abstract: A disc filter including a stack of apertured filter discs arranged about an axis, the stack having an outer surface and an inner surface and being mounted such that during backflush, individual discs are rotatable relative to adjacent discs about the axis and a disc cleaning assembly operative to rotate at least some of the discs about the axis relative to others of the discs, the disc cleaning assembly including at least one first fluid conduit for producing at least one outer liquid jet directed generally tangentially into engagement with the outer surface of the stack for rotationally driving the at least some of the discs about the axis relative to others of the discs and at least one second fluid conduit for producing at least one inner backflushing liquid jet directed into engagement with the inner surface of the stack.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 7, 2015
    Inventor: Yitzhak ORLANS
  • Patent number: 8992775
    Abstract: The invention provides an apparatus and method for removing diatomaceous earth and contaminants from a filter and for filtering liquid using diatomaceous earth. Embodiments of the method can include a washdown process, a backwash process, and a filtering process. Some embodiments of the apparatus can include one or more filter cartridges with cartridge tubes to increase flow during the backwash process. Some embodiments of the apparatus can include a backwash sprayer to disturb contaminants during the backwash process. Some embodiments of the apparatus can include a removable lid to access the filter cartridges during the washdown process.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: March 31, 2015
    Assignee: Pentair Water Pool and Spa, Inc.
    Inventors: Robert Frank Swindell, Leonard Richiuso, Brian Everett Cox
  • Patent number: 8980103
    Abstract: Disclosed herein are a ballast water treatment system having a back-pressure formation unit and a control method thereof. Back pressure in a filtering unit is checked and formed during a back washing operation for a filter of a filtering unit, thus enabling efficient back washing operation. Both a method of physically filtering ballast water using the filter and a method of sterilizing ballast water using ultraviolet rays are used to treat ballast water, thus preventing secondary contamination due to byproducts, and preventing the contamination of a ballast tank. A flow rate of ballast water introduced into an ultraviolet treatment unit is controlled such that the efficiency of the ultraviolet treatment unit is not reduced, while back pressure is formed in the filtering unit, thus increasing the overall treatment efficiency of the ballast water treatment system. Further, the filtering unit or the ultraviolet treatment unit may be automatically washed.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: March 17, 2015
    Assignee: Panasia Co., Ltd.
    Inventors: Soo-Tae Lee, Tae-Sung Pyo, Sang-Gyu Cheon
  • Publication number: 20150053628
    Abstract: A cleaning head for a filter backwashing mechanism, the cleaning head comprising: a nozzle for contact with a filter element wall 1 and for receiving a flow of backwash fluid 8, 9, wherein the nozzle comprises a rotor 3 for generating a torque when exposed to the flow of backwash fluid 8,9, and wherein the cleaning head is arranged such that at least a part of the nozzle will move toward and/or apply a force to the filter element wall 1 as a result of the torque generated by the rotor 3.
    Type: Application
    Filed: April 4, 2013
    Publication date: February 26, 2015
    Inventors: Jason Dale, Aage Bjørn Andersen
  • Patent number: 8961782
    Abstract: Grey water is conveyed to a tank, passed through filters, and pumped to an irrigation system. A floating spray component is provided in the tank to automatically backwash the filters to prevent clogging, moving up and down as the level of water in the tank changes. The filters can be cylindrical and oriented vertically, and a removable, internal filter cartridge can mount the filters. The filters can be accessed through a top, above ground cap, and the carriage can be removed for access to other parts by removing a larger lid.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: February 24, 2015
    Assignee: The Filtrific Co., LLC
    Inventor: Edward B. Berkey
  • Publication number: 20150048033
    Abstract: There is disclosed a liquid filter system that includes a liquid filter apparatus configured to self-clean without removal of the filter apparatus from the filter system. The filter apparatus uses both a filter media for filtering solids as well as a spin motion imparted to fluid being filtered so that centrifugal force can remove solids from the liquid being filtered. The liquid filter system also includes a gas pulse nozzle in fluid communication with the liquid filter apparatus and is configured to flow gas into the filter media to expel water and debris trapped in the filter media without removing the filter media from the filter system.
    Type: Application
    Filed: July 18, 2014
    Publication date: February 19, 2015
    Inventors: David Jack Burns, Timothy L. Holmes, Jeremy Michael Stevens
  • Patent number: 8955690
    Abstract: An unclogging filter apparatus has an irrigation outlet and a flushing outlet. A filtering element moves between at least an operational position and a flushing position. When the filtering element is in the operational position substantially all of the fluid flowing into the apparatus is directed out the irrigation outlet, while the filtering element is disposed for removing a particle from the fluid flowing into the apparatus. When the filtering element is in the flushing position, the filtering element is disposed for flushing the particle out the flushing outlet.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: February 17, 2015
    Assignee: Amirim Products Development & Patents Ltd.
    Inventor: Amir Cohen
  • Patent number: 8951414
    Abstract: A water treatment composition capable of effectively adsorbing pollutants from water is described. The composition includes magnetic extractants, which comprise magnetite nanoparticles containing functional groups. The composition is used to remove from water and aqueous streams oils and other contaminants. A process for removing contaminants from water and apparatus used in the process are also described.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: February 10, 2015
    Assignee: King Abdulaziz City for Science and Technology
    Inventors: Sulaiman M. Alfadul, Abdulrahman I. Alabdula'aly, Mujahid A. Khan
  • Patent number: 8951411
    Abstract: A multi-step press apparatus for sludge dewatering and waste water filtration comprising: a tank, an inflatable membrane, a level sensor, and a nozzle assembly.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: February 10, 2015
    Inventor: Eitan Sharir
  • Patent number: 8945379
    Abstract: A pool pump strainer having a rotatable trim assembly within a flooded housing cavity. A suction inlet and filtered suction outlet pair and a backwash inlet and backwash outlet pair are formed in and pass through opposite regions of a housing with at least 30 degrees between each part of a pair. A strainer disposed inside a conduit fixed between a pair of shutter plates makes up the trim assembly which is rotated between strainer and backwater positions by a stem extending through the housing. In the strainer position, water is drawn through the strainer to catch debris and then passes to the pump's suction side. In the backwash position, water is drawn through the flooded housing cavity to the suction side of the pump by a shunt. Thereafter, water discharged from the pump flows under pressure across the strainer to dislodge debris to be deposited into a catch box.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: February 3, 2015
    Inventor: James Gregory Brull
  • Patent number: 8945381
    Abstract: A water treatment composition capable of effectively adsorbing pollutants from water is described. The composition includes magnetic extractants, which comprise magnetite nanoparticles containing functional groups. The composition is used to remove from water and aqueous streams oils and other contaminants. A process for removing contaminants from water and apparatus used in the process are also described.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: February 3, 2015
    Assignee: King Abdulaziz City for Science and Technology
    Inventors: Sulaiman M. Alfadul, Abdulrahman I. Alabdula'aly, Mujahid A. Khan
  • Patent number: 8926843
    Abstract: A disc filter is provided having a controller for controlling effluent surges that are produced by the disc filter. The method entails sensing one or more process variables that are a function of the effluent, and based at least in part on the sensed process variables, the disc filter controls the flow of effluent in order to control or minimize effluent surges.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: January 6, 2015
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Michael Baker, Matt Stalter, Luke Wood, Mark Stewart
  • Publication number: 20150001166
    Abstract: Provided is a filter system including an exposed filtration media. The filter system further includes a raw liquid inlet flow path into a filtering side of the filtration media, a filtered liquid outlet flow path at a filtered side of the filtration media extending to a filtered liquid collecting port, a liquid pump for propelling liquid through the filtration media, and a rinsing mechanism for removing filtrate from the filtering side of the filtration media.
    Type: Application
    Filed: January 21, 2013
    Publication date: January 1, 2015
    Applicant: AMIAD WATER SYSTEMS LTD.
    Inventors: Ra'anan Ben-Horin, Shahar Nuriel, Omry Levin, Yuval Shamir, Ud Mussel
  • Patent number: 8920659
    Abstract: Disclosed herein are centrifuge-free self-contained systems for aseptically separating components of whole blood comprising at least one cassette for receiving whole blood; at least one red blood cell exclusion filter; at least one leukocyte reduction filters; at least one platelet exclusion filter; a plurality of product cassettes; and optionally a plurality of pumps and valves; and wherein the filters, pumps, valves, and cassettes are fluidly connected by tubing and the system does not include a centrifuge. Also disclosed are methods for obtaining blood components using the system.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: December 30, 2014
    Assignee: New York Blood Center, Inc.
    Inventors: Christoper D. Hillyer, Beth H. Shaz
  • Publication number: 20140366493
    Abstract: A filter apparatus including: a casing including, in a sealed space provided therein, a fluid inflow chamber, a filtration chamber and a drain chamber; a filter element provided inside the filtration chamber to let a fluid pass therethrough from inside to outside to perform filtration; a backwash slide member movably provided inside the filter element and removing trapped matter adhering to an inner circumferential surface of the filter element by an inward flow generated by a difference in pressure inside and outside the filter element at the time of backwashing; a backwash pipe that lets the inward flow flow toward the drain chamber; an actuation cylinder that lets the fluid from the backwash pipe flow toward the drain chamber; and a fluid flowing unit allowing a fluid to flow, enabling a piston member to move inside the actuation cylinder.
    Type: Application
    Filed: January 18, 2013
    Publication date: December 18, 2014
    Inventor: Yuichi Takahashi
  • Publication number: 20140353262
    Abstract: A method and system for removing contaminants from a filter member positioned on the inlet of a fuel pump with an electric DC motor. The polarity of the motor control circuit is reversed causing the DC motor to run in reverse discharging residual fuel in the fuel pump through the filter member.
    Type: Application
    Filed: June 2, 2014
    Publication date: December 4, 2014
    Applicant: CARTER FUEL SYSTEMS, LLC
    Inventor: John E. Troxler
  • Publication number: 20140338293
    Abstract: A duplex fluid filter assembly allows extended life between filter replacements, by automatically back-flushing one filter unit with clean fluid from another filter unit of the duplex assembly.
    Type: Application
    Filed: June 14, 2013
    Publication date: November 20, 2014
    Inventors: Jon Williams, Michael Long
  • Publication number: 20140332460
    Abstract: A filtering device (100) for high-viscosity fluids has a partial channel (34) in the housing (30) and a displacing piston (40) which can be inserted into the partial channel (34, 35). The displacing piston (40) has at least one inner fluid line (42) that extends from an inlet opening (41) therein to an outlet opening (43) on its circumference. The outer diameter of the displacing piston (40) corresponds to the inside diameter of the partial channel (34, 35). The displacing piston (40) can be positioned, in a production position, with its outlet opening (43) in front of the inlet of the discharge channel (33) into the partial channel (34, 35) and can be retracted to a backflushing initial position within the partial channel (34).
    Type: Application
    Filed: March 13, 2012
    Publication date: November 13, 2014
    Applicant: KREYENBORG VERWALTUNGEN UND BETEILIGUNGEN GMBH & CO. KG
    Inventor: Stefan Woestmann
  • Patent number: 8882997
    Abstract: The present invention discloses a method and apparatus for separating particles and dissolved matter from a produced water fluid stream. Specifically, the present invention includes a first pressure source which transports untreated produced water or contaminated aqueous fluid into a separator annulus with a filter element disposed therein. The untreated fluid is placed under appropriate pressure sufficient to produce turbulent flow, increased particle kinetics and/or cavitation allowing the desired fluid to penetrate and pass into and through the, filter media. The treated fluid is then transported to a collection tank. The contaminant matter retained by the filter media may be removed by the nearly instantaneous reverse pressurization of the separator annulus by a second pressure source thereby removing the contaminant particles away from contact with the filter media, and which may then be transported to a waste collection tank or a separator for further treatment.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 11, 2014
    Assignee: Tervita Corporation
    Inventor: Raymond Ford Johnson
  • Publication number: 20140299527
    Abstract: A device for filtering ballast water which performs filtering by installing a filter element having a conical shape in a concentric circle direction inside the device for filtering ballast water that accommodates a filter portion, and introducing ballast water from a lower end of the device for filtering and passing same through the filter element inside the device for filtering, and for discharging backwash water containing foreign substances that are inside a filter by way of differential pressure, which is created by a driving portion communicating with a filter element by rotating a suction portion that is located on a lower end of the device for filtering. Particularly, the present invention relates to a high-efficiency candle-type device for filtering ballast water having a high-density filter structure, wherein the driving portion is positioned on a lower portion of a housing so that more filter elements can be accommodated inside the housing.
    Type: Application
    Filed: October 20, 2011
    Publication date: October 9, 2014
    Inventors: Soo-Tae Lee, Tae-Sung Pyo, Su-Kyu Lee
  • Patent number: 8852445
    Abstract: A backwash header for a cloth filter disk includes a body having a length a diameter, first and second ends, a longitudinal axis, and an exterior surface, the body defining at least one internal cavity. The body includes at least one suction slot configured to allow fluids and solids to enter the internal cavity from outside of the exterior surface. A structure is attached to a portion of the exterior surface of the body around and extending away from the suction slot to form a chamber defined by the structure and a portion of the exterior surface near the suction slot. The structure is configured to allow fluids and solids to enter the chamber and then the suction slot and cavity from a material being cleaned. Cloth disk filters and methods of treating water and wastewater using the backwash headers and cloth disk filters.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: October 7, 2014
    Assignee: Alfa Laval Ashbrook Simon-Hartley, Inc
    Inventors: Yongming Xia, Jeffrey S. Devine, Charles G. Dannemann
  • Publication number: 20140231334
    Abstract: A filter system for a liquid medium is suggested, comprising at least one filter module (1, 100) with at least two vessel units, each of which has an outer side wall (4, 6), wherein one of the vessel units forms a closed filter housing (2, 102) and each other vessel unit forms a tank element. The filter systems is characterized in that one of the vessel units, as an inner vessel unit is enclosed along at least a larger part of the periphery of its side wall (4, 6), by the other vessel unit or, in the case of at lease three vessel units, by at least one of the other vessel units.
    Type: Application
    Filed: August 31, 2012
    Publication date: August 21, 2014
    Inventor: Johannes Jaenen
  • Patent number: 8808537
    Abstract: A portable self-contained water treatment system. A raw water tank is provided which can be filled by a pump or by manually pouring dirty water into it. The raw water tank can also act as a chemical pre-treatment tank such that one or more pre-treatment chemicals can be added to the water contained therein.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: August 19, 2014
    Inventor: Eddie Carl Livingston
  • Patent number: 8771509
    Abstract: The invention is directed to a purifying device for sludge under water and a method for operating the same. The device includes a main fixing frame having an accommodating portion assess to the outside, a hollow liquid container in the accommodating portion, wherein the liquid container is provided with a liquid-flow hole and at least a backwash hole, multiple filters on the liquid container, and a pump connected to the liquid-flow hole at the liquid container through a liquid pipeline. The method includes steps: moving the liquid container having the filters to an area having a liquid to be filtered; leading the liquid to flow into the liquid container through the filters filtering out solid particles contained in the liquid; and leading a fluid to flow into the liquid container such that the filters can be backwashed accompanying with an external cleaning device if the filters are clogged.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: July 8, 2014
    Assignee: Institute of Nuclear Energy Research
    Inventors: Chun-Ping Huang, Jamie Liao
  • Patent number: 8771514
    Abstract: The present invention relates to a filter pack formed by stacking rings, being used as a final element in multistage or single-stage filters. The filtration process is performed by consecutively separating the particles in suspension according to the thickness thereof in different areas.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: July 8, 2014
    Assignee: Universidad Politecnica de Madrid
    Inventor: Alfonso Cobos De La Fuente
  • Publication number: 20140183124
    Abstract: A filter cleaning apparatus used in a reaction system including; a reaction tank having a filter, first feed line connected to the filter at one end, a recovery tank connected to the other end of the first feed line, and second feed line connected to the recovery tank at one end, is provided. The filter cleaning apparatus includes; first return line connected the second feed line at one end, first and second reverse cleaning solution tanks connected to the first return line, a first flow rate adjusting valve that can adjust filtered fluid to be supplied to the first reverse cleaning solution tank, a second flow rate adjusting valve that can adjust filtered fluid to be supplied to the second reverse cleaning solution tank, and a switching section that carries either one of the filtered fluids accommodated in these reverse cleaning solution tanks by switching.
    Type: Application
    Filed: August 2, 2012
    Publication date: July 3, 2014
    Applicants: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION, INPEX CORPORATION, NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD., JAPAN PETROLEUM EXPLORATION CO., LTD., COSMO OIL CO., LTD., JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Atsushi Murata, Eiichi Yamada, Shinji Fukumoto
  • Patent number: 8764975
    Abstract: The invention relates to a device and a method for the separation of solids from a biowaste slurry before heat treatment, and for heat treatment of the separated solids. The device comprises a chamber with a main inlet port for feeding slurry, and outlet ports. A unit for separating solids is adapted to an outlet port so, that liquid leaving the chamber has passed through the separation unit. A second outlet port is provided directly from the chamber to allow removal, following sterilization, of solids collected in the chamber. The sterilization is secured by temperature monitoring at representative locations.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: July 1, 2014
    Assignee: Steris Europe, Inc. Suomen Sivuliike
    Inventors: Mauri Salmisuo, Juha Mattila, Teppo Nurminen
  • Patent number: 8758621
    Abstract: A method of purifying impure water contaminated with a filterable impurity and a dissolved impurity, such as seawater, comprising the steps of: providing impure water to a primary microfiltration or ultrafiltration unit to remove the filterable impurity and produce impure filtered water contaminated with a dissolved impurity; providing the impure filtered water contaminated with a dissolved impurity to a reverse osmosis unit to produce a potable water stream and a residual reverse osmosis stream; and treating the residual reverse osmosis stream prior to reuse. The treatment may be in the form of passing through a secondary filter (such as another microfiltration or ultrafiltration membrane or a cartridge filter, and the subsequently treated reverse osmosis reject may be used to backwash the microfiltration or ultrafiltration unit.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: June 24, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventor: Joseph Edward Zuback