Rehabilitating Or Regenerating Filter Medium Patents (Class 210/791)
  • Patent number: 10434475
    Abstract: The present invention relates to a comprehensive evaluation method for the performance of contaminated flat membranes, which relates to the field of sewage and waste resource technology. The present invention firstly analyzed the composition of the surface elements of the contaminated membrane by EDX to determine the type of membrane contamination, and then designed different cleaning schemes for organic or inorganic pollution to obtain a sample membrane. When the tensile strength of the contaminated membrane decreased more than 50% than that of the control membrane, it is a waste membrane; when the tensile strength decreased less than 50% and the membrane flux reduced more than 30%, it is a waste membrane; when tensile strength decreased less than 50%, membrane flux reduced less than 30% and the carbon footprint was more than 188 g, it is a waste membrane; otherwise was a old membrane.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: October 8, 2019
    Assignee: Jiangnan University
    Inventors: Xiufen Li, Xiaoli Song, Xinhua Wang, Yueping Ren, Xiguang Qi
  • Patent number: 10245532
    Abstract: A center tube for use with a filter element comprises a unitary body having a standpipe that defines a length along the longitudinal axis and a central flow passage and a plurality of radially extending flow fins attached to the standpipe, the flow fins spaced axially from one another along the standpipe to define radial flow channels, wherein each of the fins further defines a first aperture between the fin and the standpipe, the apertures together defining a first outer axial flow passage and the standpipe defines a rectangular shape.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: April 2, 2019
    Assignee: Caterpillar Inc.
    Inventors: Jeffrey R. Ries, Bryant Morris, Samuel D. Oanes
  • Patent number: 10232316
    Abstract: Provided is a reciprocating submerged membrane filtration apparatus including: a membrane tank comprising a submerged membrane and configured to intake influent wastewater to be treated, the influent wastewater being filtered through the submerged membrane to produce treated water; and a reciprocation apparatus configured to move the membrane to create an inertia force which shakes foulants off from the submerged membrane under oxygen-deficient conditions, wherein the submerged membrane comprises a microfiltration (MF) membrane or an ultrafiltration (UF) membrane.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: March 19, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Hyung Keun Roh, Jaeho Ho
  • Patent number: 9987571
    Abstract: A filter insert piece has a filter element with first and second pleated sections each having parallel pleats. The first and second pleated sections each have an inflow side. A first flat outflow side of the first pleated section and a second flat outflow side of the second pleated section adjoin a common clean chamber of the filter element. A length of the pleats of the first and second pleated sections is such that a spacing of an outwardly positioned pleat end face of the pleats at the first or second inflow side, respectively, relative to the center axis increases or decreases monotonic from pleat to pleat. The respective end pleats of the first and of the second pleated sections have a different length extension measured from the outwardly positioned pleat end face of the first end pleats or the second end pleats relative to the center axis.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: June 5, 2018
    Assignee: MANN+HUMMEL GmbH
    Inventors: Martin Klein, Frank Bartel, Jobst Eisengraeber-Pabst, Anton Kreiner, Pamela Gohl, Lars Spelter, Armando Labarta
  • Patent number: 9943790
    Abstract: The present invention relates to a filtering assembly for filtering at least one fluid flowing in particular in a hydraulic motor or device, comprising: —a filter body which comprises a vessel and a cover which are configured to engage with one another in order to enable the filter body to close, —a tube, in particular a central tube, inside the filter body extending along a longitudinal axis (X), —a removable filter cartridge which is housed in the filter body and includes an upper end plate, a lower end plate and a filter medium which extends between the upper end plate and the lower end plate, the filter cartridge having a tubular opening for surrounding the tube, characterized in that the cover has a circular rib which is formed such as to project into an inner space of the filter body, and in that the upper end plate has a circular edge which is designed to sealingly engage radially and inwardly with said circular rib of the cover.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 17, 2018
    Assignee: Cummins Filtration Sarl
    Inventors: Emmanuel Page, Loïck Menez
  • Patent number: 9882263
    Abstract: Disclosed is a pivotable horn antenna intended for a radar level indicator and includes a ball joint, the joint socket of which can be screwed into a threaded hole in the container. This allows for optimization of the echo signal and correction of slanted installation of the horn antenna.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: January 30, 2018
    Assignee: VEGA GRIESHABER KG
    Inventors: Fritz Lenk, Clemens Hengstler
  • Patent number: 9873974
    Abstract: A machine adapted to carry out at least one laundry drying cycle. Such machine comprises a frame wherein a tub is mounted; a drum wherein laundry is placed, said drum being rotatably mounted within the tub and having at least one load opening; a door movable between a closed position and an open position; a drying system comprising: an intake channel for removing humid air from the tub; a delivery channel for supplying dry air into the drum; a drying apparatus interposed between the intake channel and the delivery channel for separating at least partially the air from the water contained therein obtaining dry air. The delivery channel is at least partially provided on the door.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: January 23, 2018
    Assignee: Indesit Company S.p.A.
    Inventors: Antonio Coniguardi, Sandro Duri
  • Patent number: 9527016
    Abstract: A filter element may include a tubular member, including a first end portion, with the first end portion being substantially open, at least partially defining an inlet port configured to provide flow communication into a first chamber of the tubular member, and at least partially defining an outlet port configured to provide flow communication from a second chamber. The tubular member may further include a second end portion, with the second end portion being located at an end of the tubular member opposite the first end portion. The tubular member may also include at least one outlet aperture, at least one inlet aperture, and a vent tube extending longitudinally between the first end portion and the second end portion. The vent tube may be configured to provide flow communication between the first end portion and the second end portion of the tubular member.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: December 27, 2016
    Assignee: Caterpillar Inc.
    Inventors: Bryant A. Morris, Jeffrey R. Ries
  • Patent number: 9527017
    Abstract: A filter element may include a tubular member, and tubular member may include a partition at least partially defining first and second chambers. The tubular member may further include an end portion at least partially defining an inlet port configured to provide flow communication into the first chamber, and at least partially defining an outlet port configured to provide flow communication from the second chamber. The tubular member may further include a cover portion at the end portion of the tubular member, with the cover portion extending from the partition. The cover portion may be configured to at least partially cover a longitudinal end of the second chamber. The filter element may further include a filter medium associated with at least one outlet aperture and the at least one inlet aperture of the tubular member.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: December 27, 2016
    Assignee: Caterpillar Inc.
    Inventors: Bryant A. Morris, Jeffrey R. Ries
  • Patent number: 9486723
    Abstract: The invention relates to a method and a device for operating a screen wheel filter for highly viscous melts having pressures >10 bar and temperatures >90° C. which shall be further developed in such a way that less of the highly viscous melt is wasted and that the operation of the screen wheel filter can be made more economical.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: November 8, 2016
    Assignee: GNEUSS GMBH
    Inventors: Detlef Gneuss, Stephan Gneuss, Daniel Gneuss
  • Patent number: 9221000
    Abstract: A filtration barrier includes a filter mesh that has a plurality of groups of flexible filter elements, with each group having at least a first and second flexible filter elements disposed in spaced relation. The first flexible filter element is more flexible than the second. Each flexible filter element is secured to the first and second anchoring members of the mesh and free therebetween. During forward fluid flow, the first and second flexible filter elements are supported against downstream deflection and lie in a common plane. For reverse fluid flow, the first flexible element of a group displaces farther from the common plane than the second flexible filter element of that group, such that a first backwash opening associated with the first flexible element is larger than a second backwash opening associated with the second flexible element. Each group may have more elements, and associated methods are also disclosed.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: December 29, 2015
    Inventor: Ian D. Doig
  • Patent number: 9187863
    Abstract: The method is for preparation of white liquor in a chemical recovery process of the kraft process. The green liquor separation process and the white liquor separation process are taking place in the same common filter apparatus with no dedicated green liquor separation apparatus or any dedicated white liquor separation apparatus. The white liquor separation process and the green liquor separation process are conducted in sequence in the same filter apparatus. The white liquor separation process has a part of the cycle time in the range 20-50% of the total cycle time in the same filter apparatus.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: November 17, 2015
    Assignee: Valmet AB
    Inventors: Eva Hogebrandt, Alessandra Labigalini Baranovsky
  • 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: 20150108071
    Abstract: A ballast water treatment plant, as well as a method of operation, configured for treating water to be delivered into a ballast tank is disclosed. The system and method is configured for, during ballast offload operation and by means of a first backwashing water conduit, lead backwashing water from a ballast water filter to a suction side of a ballast water pump. This way, filter backwashing water is circulated through the ballast water pump and the ballast water filter.
    Type: Application
    Filed: November 27, 2012
    Publication date: April 23, 2015
    Inventors: Mark Kalhøj, Christian Ingvorsen, Michael Claville
  • Patent number: 8999166
    Abstract: A specially designed hatch apparatus and method for entry to a water treatment chamber containing media for water treatment. The hatch's shape, specially embodied hatch/media gap seal and position allows normal chamber operation and access to the lower chamber cavity for cleaning and maintenance time through treatment media.
    Type: Grant
    Filed: November 16, 2013
    Date of Patent: April 7, 2015
    Inventor: Angel Torres-Collazo
  • Patent number: 8986552
    Abstract: A filtration and monitoring system. An inlet pipe provides fluid to a filter block chamber and has an inlet valve located therein configured to shut off the flow of the fluid through the inlet pipe. A filtered fluid conduit fluidically connects the filter block with the monitoring device. The outlet axis of the outlet pipe in the filter chamber is offset from the inlet axis of the inlet pipe such that the fluid undergoes a change of direction while passing through the filter block chamber thereby causing turbulent flow within the filter block chamber to reduce the buildup of filter cake on the filter element. Closing the inlet valve block, results in a back-flushing flow of fluid through the filter element from a pressure accumulator located in the filtered fluid conduit.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: March 24, 2015
    Assignee: General Electric Company
    Inventors: Mikhail Byalskiy, Brian Link
  • Publication number: 20150079518
    Abstract: An apparatus and method for qualifying a filter used to filter fluid used in a coating operation associated with photolithography or other semiconductor manufacturing processes, provides a semiconductor manufacturing tool that includes a filter and an acoustic wave generator. The filter may be housed inside a filter housing and the acoustic wave generator may produce ultrasonic, megasonic or other acoustic energy. The acoustic wave generator contacts or is in close proximity with the filter housing and provides acoustic wave energy to the filter through the housing. The acoustic wave energy causes any bubbles in the filter to become disengaged.
    Type: Application
    Filed: December 3, 2014
    Publication date: March 19, 2015
    Inventor: Guy JACOBSON
  • Publication number: 20150076085
    Abstract: A screw press has a cylindrical screening section mounted to a frame. The screening section is able to rotate but can be prevented from rotating. A sprayer system is operable to spray water on the screening section. In a cleaning process, the screening section is rotated while water is sprayed against it. Optionally, the power required to rotate the screen may be provided by an auger drive mechanism. The screening section may have openings sized to retain flocculated solids. The screw press may be used to thicken a sludge from a waste water treatment plant.
    Type: Application
    Filed: April 18, 2013
    Publication date: March 19, 2015
    Inventors: Michael David Theodoulou, Juan Carlos Josse
  • Patent number: 8974603
    Abstract: A filter that filters carbon dioxide in the gaseous, liquid or supercritical state is efficiently purified. The carbon dioxide is used to at least clean or dry an object to be treated, or to clean or dry the object to be treated. A method of purifying a filter for filtering carbon dioxide in a gaseous, liquid or supercritical state is provided. The carbon dioxide is used to at least clean or dry the object to be treated, or to clean and dry the object to be treated. According to the method, the filter 13 is purified before the carbon dioxide is filtered in the gaseous, liquid or supercritical state by the filter 13. The filter 13 is purified by allowing carbon dioxide to pass through the filter.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: March 10, 2015
    Assignee: Organo Corporation
    Inventors: Hiroshi Sugawara, Yoshinori Ono
  • Publication number: 20150048036
    Abstract: Self-cleaning swimming pool filter apparatus having a hollow cylindrical filter in a filter housing and a cleaning tube rotatable with respect to the filter, with a plurality of filter cleaning orifices, a pump connected to circulate swimming, pool water through the filter in the operational filtering mode and through the cleaning tube and filter cleaning orifices in the filter cleaning mode, according to the setting of directional valves.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Inventor: Robert Stanley Chick
  • Patent number: 8951423
    Abstract: A method for removing a filter cake from a filtering device having a housing that defines a filtration flowpath through which a filtrate flows, the housing having at least one inlet and at least one outlet, the filter cake being deposited on at least one cylindrical filter element disposed within the filtering device, the at least one cylindrical filter element comprises at least one filter material and at least one rebound element, the at least one rebound element having a first flange extending from a head region and a second flange extending from a foot region, the at least one rebound element having a structured surface with at least two recesses mutually parallel in the longitudinal direction of the at least one rebound element, the at least two recesses are formed extending between the first flange and the second flange.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: February 10, 2015
    Assignee: ETS Trade S.A.R.L.
    Inventors: Harald Schmidt, Frank Jonigkeit
  • 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
  • Publication number: 20150001165
    Abstract: A filter cleaning system and method utilizes stationary conduit frames to discharge a cleaning fluid onto a filter without requiring removal of the filter. An intake valve positions on a housing upper end for receiving the fluid from an external source. A primary conduit extends along a longitudinal axis of the housing to carry the fluid from the housing upper end to a housing lower end, and in proximity to the filter. A plurality of conduit frames join the primary conduit at predetermined intervals along the longitudinal axis of the housing. The fluid flows through the conduit frames. Each conduit frame includes a plurality of apertures oriented to face the filter and discharge fluid onto the filter. Throughout the process, the conduit frames remain stationary. Support rods provide longitudinal stability, while wedges provide lateral stability to the conduit frames. A release valve discharges fluid and debris after cleaning.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 1, 2015
    Inventor: Guillermo Duenas
  • 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: 20140346127
    Abstract: Embodiments of the disclosure provide a filter structure. A second porous film having a plurality of second holes is disposed on a first porous film having a plurality of first holes. The second holes are smaller than the first holes. The filter structure is dried by an easy and power-saving method such as compression.
    Type: Application
    Filed: August 7, 2014
    Publication date: November 27, 2014
    Inventors: MING-DER BAI, TE-CHANG LAN, KUO-TI CHEN, HOM-TI LEE, YUN-HUIN LIN
  • Publication number: 20140342397
    Abstract: The invention relates to a device and a method for detecting particles, in particular parasites, in drinking water adapted to on-line application. In particular, the invention b) relates to a method for detecting parasites in water, said method comprising: Passing at least a part of the water through a filter; Applying indirect sonication with ultrasound to said filter to release parasites which have been collected in said filter without disrupting said parasites; Collecting parasites for detection; and Detecting the collected parasites. This serves to collect parasites in the filter and/or increase the concentration of parasites before the filter and/or disrupt aggregates without disrupting the parasites per se. The invention further relates to a concentration device for filter filtration concentration of particles from a volume of a fluid. The concentration device comprises an ultrasonic transducer that is configured to clean the filter.
    Type: Application
    Filed: December 21, 2012
    Publication date: November 20, 2014
    Applicant: Grundfos Holding A/S
    Inventors: Jens Andersen Gad, Heidi L. Enemark, Mohammad Nafi Solaiman Al-Sabi, Jørgen Kurtzhals
  • Publication number: 20140332476
    Abstract: The present disclosure provides a depth filter medium comprising at least one elastomeric nonwoven web strengthened by combination with one or more structural support layers. The resulting material is particularly useful in the field of filtration, wherein particulates captured within the elastomeric nonwoven web can be readily released, such as by applying pressure to the web through backwashing. The elastomeric nonwoven web advantageously can stretch under such pressure and return substantially to its original structure and shape upon the removal of the pressure, rendering the filter available for reuse.
    Type: Application
    Filed: January 4, 2013
    Publication date: November 13, 2014
    Inventor: Behnam Pourdeyhimi
  • Publication number: 20140326682
    Abstract: A method of filtering a feed liquid in a membrane filtration assembly is provided comprising introducing feed liquid to be treated into a filtration chamber of a membrane filtration system including a membrane module having one or more permeable hollow membranes, the module being located in the filtration chamber, and the filtration chamber having an open upper end located above an upper header of the membrane module and a closed lower end, and feed tank surrounding the filtration chamber. The feed tank may be configured to provide the feed liquid through the open upper end of the filtration chamber, and the feed liquid may be applied to the surface of the membranes within the membrane module and withdrawn from the lumens of the membranes as filtrate.
    Type: Application
    Filed: July 15, 2014
    Publication date: November 6, 2014
    Inventors: David John Cox, Warren Thomas Johnson
  • Publication number: 20140326080
    Abstract: A filter device having a sonotrode connected to a filtration assembly. The filtration assembly has a filter body having a fluid passage. The filter body has a filter across the fluid passage. The filter assembly has a resonant frequency and the sonotrode is adapted to vibrate the filter assembly at or near the resonant frequency.
    Type: Application
    Filed: April 30, 2014
    Publication date: November 6, 2014
    Applicant: Bio-Rad Laboratories, Inc.
    Inventors: Richard Day, Michael Burcher, Nathan Wrench, Marek Myszko, Matthew Hayes
  • Patent number: 8863401
    Abstract: A household laundry dryer has at least one filter container which includes a chamber with an inlet for condensate water to be cleaned. The chamber has a first outlet, a second outlet and a filter element which is arranged between the inlet and the first outlet and which divides the chamber into an inlet-side first chamber part and a second chamber part. The filter container can be configured in such a way that the inlet is arranged below the filter element and the filter element is arranged below the first outlet, and the second outlet opens into the first chamber part. Particles deposited on the filter element by water being pushed through the inlet into the chamber are detachable from the filter element by water flowing back into the chamber, when no water is being pushed through the inlet, and removable through the second outlet.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: October 21, 2014
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Klaus Grunert, Frank Kohlrusch, Andreas Ziemann
  • Publication number: 20140305885
    Abstract: A strainer system comprises a strainer housing having an inlet for raw fluid and an outlet for strained fluid; a generally cylindrical strainer basket having a strainer screen and disposed within the housing, the external surface of the strainer screen being in flow communication with the raw fluid inlet and the internal surface of the strainer screen being in flow communication with the strained fluid outlet; a backwash collector assembly comprising a backwash conduit having an opening disposed adjacent the outer surface of the strainer screen, the backwash conduit and the strainer basket being moveable relative to each other, so as to allow the opening to pass across the external surface of the strainer screen. A method of straining a fluid, in particular a liquid, is also provided. Finally, a valve assembly for use in the selective opening and closing of a plurality of backwash conduits is disclosed.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 16, 2014
    Inventors: Brent Knox-Holmes, Ian Durdin, Andrew David Jackman
  • Publication number: 20140299557
    Abstract: A device for venting a processing vessel (2) comprising: a separation unit (20) including a fluid permeable separator (26) for separating a solid from a fluid present in a fluidic solid dispersion, the separation unit (20) having an interface component (22) for attachment to a wall (8) of a processing vessel (2) in a manner so that the interface component generally integrates with the wall forming a substantially contiguous wall surface and a cleaning mechanism (50) that is in fluid communication with the separation unit (20) and that is adapted to extract the fluid that is separated from the fluidic solid dispersion from the processing vessel, and to periodically and/or continuously agitating the solids on the surface of the separation unit so that the fluid can pass through the separator.
    Type: Application
    Filed: August 9, 2012
    Publication date: October 9, 2014
    Inventors: Xindi Yu, James F. Koch, Jim M. Grider
  • 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: 20140291261
    Abstract: A fluid filtering system with backwashing, particularly for ballast tanks, employing a pump with its inlet connected to receive fluid to be filtered and the outlet of the pump to a unified filtering vessel with apparatus for sequentially backwashing individual filter media elements and connecting the backwash to a drain. The unified filtering vessel has a filtrate outlet connected through a valve for filtering flow to/from ballast tanks. The filtrate outlet is also connected through another valve to the inlet of the pump for including clean filtrate in the backwashing.
    Type: Application
    Filed: April 2, 2013
    Publication date: October 2, 2014
    Applicant: EATON CORPORATION
    Inventor: David Kan Yee
  • Patent number: 8840783
    Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: September 23, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventors: Fufang Zha, Gerin James, Joseph Edward Zuback, Peter Zauner, Roger William Phelps
  • Publication number: 20140263104
    Abstract: A filter bucket and a mop bucket movable between an upstanding use position and a drain position where, when the mop bucket is in the drain position, water in the mop bucket drains into the filter bucket. A fluid flow path connecting the filter bucket to the mop bucket such that water in the filter bucket will flow through the fluid flow path from the filter bucket to the mop bucket. A filter located in the fluid flow path.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: Rubbermaid Commercial Products, LLC
    Inventors: Matthew Scott Kepner, Frank Wang, Kevin Fitzpatrick, Kim Chow
  • Publication number: 20140263105
    Abstract: A filter bucket and a mop bucket movable relative to the filter bucket between a use position and a drain position. When the mop bucket is in the drain position, the water in the mop bucket drains into the filter bucket. A fluid flow path is provided between the filter bucket and the mop bucket and a filter is located in the fluid flow path such that water flows through the fluid flow path and the filter when the mop bucket is moved from the drain position to the use position.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: Rubbermaid Commercial Products, LLC
    Inventors: Boris Kontorovich, Peter Capraro, Mario Quintana Serrahima, Eric Freitag
  • Publication number: 20140263085
    Abstract: A continuously-operable flow stream processing system and method has two or more fluid processing media arranged in a fluid conduit network to provide alternate flow paths for a flow stream to be processed (e.g. filtered). Valves and other flow control devices, e.g. controller module and sensors, are used to redirect the flow stream from one or more service-needed fluid processing media to service-ready fluid processing media without taking the system offline to remove, repair, replace, clean in situ, or otherwise service the service-needed fluid processing media, so that the system may operate continuously to process the flow stream without stoppage. Redirection into alternative flow paths and media may be automatically implemented based on a predetermined threshold or trigger condition, such as may be detected by sensors directly or indirectly monitoring media condition.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: Mark A. Mitchell, Brian Anderson
  • Publication number: 20140263083
    Abstract: The invention is directed towards methods and apparatus for improving the accuracy of monitors measuring the property of spray water used to cool a molten metal strand in a continuous casting operation. The method utilizes a highly effective slid-sieve to remove particles from sample water that would otherwise jam the monitor or would break the monitor. This particle removal results in the monitor providing more accurate measurements which in turn results in lower operating expenses, reduced maintenance costs, and production costs.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: Ecolab USA Inc.
    Inventors: Lise Delain Bioton, Laia More Roca, Erik Fijlstra, Peter de Graaf, Peter Blokker, Stefanus Hendrikus Maria Vrijhoeven
  • Publication number: 20140224749
    Abstract: A filter mesh assembly configured to control particulate material in a filter assembly of a plastic extruder. The filter mesh assembly includes a wire mesh filter having a square weave construction defining a predetermined pore size with the wire mesh filter having flattened surfaces of adjacent wires on the same plane and configured to allow a portion of the scraper to move across the wire mesh filter assembly. The assembly also includes a wire mesh supporter having a square weave construction and a characteristic of sufficient strength to support the wire mesh filter against a breaker plate. The wire mesh filter and the wire mesh supporter are diffusion bonded to each other as a unified structure and disposed in a housing between an inlet and breaker plate. The configuration allows passage of molten plastic through the breaker plate and lateral movement of material, parallel to the breaker plate.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 14, 2014
    Inventors: Sam Arthur Hopkins, Mitchell Scott Vande Guchte, Scott Allen Rhoads
  • Publication number: 20140217039
    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: January 8, 2014
    Publication date: August 7, 2014
    Applicant: Xylem Water Solutions Zelienople LLC
    Inventors: John L. Geibel, Christopher J. Ball
  • Patent number: 8778193
    Abstract: The invention provides a method for the separation of liquid from a three phase slurry bubble column. The method includes the step of charging the inside of a hollow filter element with a rinsing fluid to clean the inside of the filter for catalyst fines followed by a backflushing step. The invention also provides an installation for the separation of liquid from a three phase slurry bubble column. The installation includes at feast one hollow and enclosed filter element and one or more conduits in fluid communication with the internal volume of the filter, with at least one conduit being configured or connected for inflow of rinsing fluid and at least one conduit being configured or connection for outflow of rinsing fluid.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: July 15, 2014
    Assignees: Petroleum Oil and Gas Corporation of South Africa, Ltd., Statoil Hydro ASA
    Inventors: Ockert Rudolph Minnie, Patrick Otto Taylor, Pål Søraker, Marcus Fathi
  • Patent number: 8778174
    Abstract: Methods and apparatus for treating water and wastewater include the step of flowing a suspended solids stream generally upward through a sludge blanket region of a cloth disk filter vessel, thus forming a partially treated effluent composition and a solids-enriched sludge blanket. The partially treated effluent composition is allowed to flow generally upward to a cloth filter zone in the vessel after contacting the sludge blanket. The methods include flowing the suspended solids stream through one or more distribution headers positioned in the sludge blanket. An option is to provide a sludge concentration zone in the sludge blanket region, allowing sludge to flow into the sludge concentration zone to form concentrated sludge. Other methods and apparatus include backwash assemblies that backwash substantially the entire filter cassette surfaces, with or without use of a sludge blanket zone. Either the backwash assemblies or filter cassettes move in the latter methods and apparatus.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: July 15, 2014
    Assignee: Alfa Laval Ashbrook Simon-Hartley Inc.
    Inventors: Yongming Xia, Jeffrey S. Devine, Charles G. Dannemann
  • Publication number: 20140158163
    Abstract: Embodiments of the present invention relate to methods and systems for detecting and removing a clogging condition of a filter in a dishwasher. According to one embodiment, the method includes determining a normal water level or a normal rate of water level change for a wash cycle of the dishwasher and monitoring a water level or a rate of water level change during execution of the wash cycle. The method further includes detecting the clogging condition of the filter by detecting a deviation thereof. A current position of the wash cycle being executed may then be determined. The method further includes executing a remedial operation to facilitate removal of the clogging condition and determining if the clogging condition has been removed. Finally, the method includes resuming operation of the dishwasher at a wash cycle position based on the current position if the clogging condition has been removed.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 12, 2014
    Applicant: ELECTROLUX HOME PRODUCTS, INC.
    Inventors: Mark D. Montgomery, Dennis A. Poyner, Virgil J. Francisco, James L. Burrows
  • Publication number: 20140155318
    Abstract: Compositions comprising an isolated peptide, which may for example optionally comprise a sequence selected from the group consisting of FDYDWY (SEQ ID NO: 2), SFSQNKSVHSFDYDWYNVSDQADLKN (SEQ ID NO: 3) or CSFSQNKSVHSFDYDWYNVSDQADLKNC (SEQ ID NO: 1), or any cyclized version thereof, and methods of using same, including for treatment of or prevention of formation of microbial biofilms and against adhesion of a cell to a surface.
    Type: Application
    Filed: September 3, 2013
    Publication date: June 5, 2014
    Applicant: Tel Hashomer Medical Research, Infrastructure and Services Ltd.
    Inventor: Amir ZLOTKIN
  • Publication number: 20140138326
    Abstract: Embodiments of the present invention provide a filtration system that can be used to filter debris-laden water and to systems for cleaning the filtration system using a vacuum flush system to create a backwash flow through the filter of the filtration system. The filtration system described finds particular use on-board passenger transport vehicles that have a vacuum waste system, such as aircraft. The filtration system provides the ability to collect, treat, and reuse liquid resources in an environment with a vacuum waste system.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 22, 2014
    Applicant: MAG AEROSPACE INDUSTRIES, INC.
    Inventors: Razmik B. Boodaghians, Kevin Huang, Christina Ortolan, Timothy Birbeck, Nguyen Tram, Christoph Goeschel
  • Patent number: 8728328
    Abstract: A method of removing suspended solids from a gasification process water stream includes, in an exemplary embodiment, providing a gasification process water stream containing process derived suspended solids, settling at least a portion of the suspended solids from the process water stream in a settling apparatus, providing a filter apparatus having a plurality of filter elements, and removing a portion of the settled solids from the settling apparatus. The method also includes precoating the filter elements with the settled solids removed from the settling apparatus, directing a portion of the process water stream from the settling apparatus to the filter apparatus, and filtering the portion of the process water stream directed from the settling apparatus through the precoated filter elements to remove suspended solids particles to form a filtrate.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: May 20, 2014
    Assignee: General Electric Company
    Inventors: James Scott Kain, Priyadharshini Swaminathan, Dinh-Cuong Vuong
  • Publication number: 20140124460
    Abstract: The present invention relates to a method of filtering a feed and waste water treatment system using the filtration method. The method utilizes a filtration cake for the filtration, which filtration cake is formed by elements contained in a liquid having a different composition than the feed to the filtered. The invention relates in particular to a method for filtering a liquid containing solid particles of different sizes which utilizes a filtration cake formed at least partly and preferably only from particles contained in said liquid containing solid particles of different sizes. The particles of the filtration cake are deposited on a filtration cake support and the method involves separation of the liquid containing solid particles of different sizes into two fractions: one fraction containing solid particles above a certain size and one containing smaller particles, and filtering the fraction containing smaller particles through the filtration cake.
    Type: Application
    Filed: March 27, 2012
    Publication date: May 8, 2014
    Applicant: GRUNDFOS HOLDING A/S
    Inventors: Dominik Marek Dominiak, Tom Bjerregaard Jæger
  • Publication number: 20140116966
    Abstract: A fluid filter system to be used in pressure washers, high power cleaning devices, heating systems or other hydraulic equipment systems that deliver high pressure fluid through pressure lines.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 1, 2014
    Inventor: Robert Dennis Podsadowski