Rehabilitating Or Regenerating Filter Medium Patents (Class 210/791)
  • 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
  • Publication number: 20140110355
    Abstract: A method of separating a mixture of liquid and insoluble solids in a filter press may comprise: pumping the mixture into a multiplicity of chambers to form a filter cake, each of the chambers being between adjacent filter plates, each of the chambers being lined by filter cloths, wherein, during the pumping, filtrate is forced through the filter cloths and out of the chambers; and releasing dried filter cake from the chambers; wherein the pumping comprises pumping the mixture through a multiplicity of side feed ports and into each of the chambers through a multiplicity of delivery slots, and wherein the openings of the delivery slots into each of the chambers is above the height of the side feed ports. A filter press system is described which includes filter plates and chambers with the aforementioned configuration of side feed ports and delivery slots.
    Type: Application
    Filed: September 12, 2013
    Publication date: April 24, 2014
    Applicant: DES, Inc.
    Inventors: Daniel J. Simpson, Ferdinand Kogler
  • Publication number: 20140102992
    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: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Inventor: Ian D. Doig
  • Publication number: 20140097146
    Abstract: Carbon nanostructures can include a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another, thereby defining a porous space having a tortuous path within the carbon nanostructures. The porous space can be used for sequestering a range of particulate sizes from various types of substances. Separation membranes can include a separation body having an effective pore size of about 1 micron or less and providing a tortuous path for passage of a substance therethrough. The separation body can include carbon nanostructures.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 10, 2014
    Applicant: APPLIED NANOSTRUCTURED SOLUTIONS, LLC
    Inventors: Tushar K. SHAH, Han LIU, Matthew R. LASZEWSKI, Daniel R. HOSKINS, Melissa L. JONES, Saba SEYRAFI
  • Publication number: 20140097143
    Abstract: A filtration unit contains a plurality of filter housings, each filter housing having a cylindrical shell with a lower port, an upper port, and a filter element. The lower and upper ports direct fluid through the filter housing in a first direction during a filtering cycle and direct fluid through the filter housing in a second direction during a backwashing cycle. The unit also includes a diverter and a servomechanism that rotates the diverter to selectively connect the filter housing to a drain port for the backwashing cycle.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 10, 2014
    Applicant: Eaton Corporation
    Inventors: Michael Roland Clements, John Henry Burczyk, Craig James Annable
  • Patent number: 8679335
    Abstract: The vacuum system (100) is mounted on a vehicle (102). It includes a dewatered solid matter compartment (142), a liquid matter compartment (144), a main flexible hose (130), and an immersible suction head (120) connected to a distal end of the main flexible hose (130). The suction head (120) includes a static dewatering screen filter (150) and a screen-washing arrangement (170) cooperating with the suction head (120). The screen-washing arrangement (170) is in fluid communication with the liquid matter compartment (144) through a high-pressure liquid circuit. The screen-washing arrangement (170) using the liquid matter from the liquid matter compartment (142) as a washing fluid. A method of separating solids and liquid fractions is also disclosed.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: March 25, 2014
    Assignee: Saniprotex Inc.
    Inventor: Denis Dufort
  • Publication number: 20140061142
    Abstract: A filter plate (1) with at least one filling shoe (2, 2?) having a drive (4, 7, 18). A process for filtering a suspension, which is fed through at least one filling shoe (2, 2?) into at least one filter chamber formed between a filter plate and a counterplate of a filter device, where a filter cake forms on a filter cloth (8) on the filter plate (1), where the filter device is opened, and where the at least one filling shoe (2, 2?) is lifted subsequently off the filter cloth (8) by means of the drive (4, 7, 18) and the filter cloth (8) is conveyed onwards. By using a drive to move the filling shoe, the time at which the filling shoe is lifted off the filter cloth can be selected such that the filling shoe suffers no damage and the filter cloth conveyed further onwards.
    Type: Application
    Filed: February 25, 2013
    Publication date: March 6, 2014
    Applicant: ANDRITZ TECHNOLOGY AND ASSET MANAGEMENT GMBH
    Inventor: Andritz Technology and Asset Management GmbH
  • Patent number: 8663474
    Abstract: A non-blocking filtration system wherein the suspension filtered continuously scrubs the filter, keeping it free of deposits of solid deposits while the filtrate is removed in a variety of biological and chemical applications, substantially reducing the cost of unit operations.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: March 4, 2014
    Assignee: Therapeutic Proteins International, LLC
    Inventor: Sarfaraz K. Niazi
  • Publication number: 20140054245
    Abstract: A downspout filter device having an external conduit with an inlet end configured for detachable coupling with a downspout and receipt of drain water, and an outlet for dispersal of the drain water. A filter element is positioned within the external conduit, thereby defining a channel for fluid communication of the drainwater from the inlet of external conduit, through the channel and to the outlet end of the external conduit. The filter element has a filtering material adapted to remove debris from the drain water and a receptacle for the receipt of debris.
    Type: Application
    Filed: August 27, 2013
    Publication date: February 27, 2014
    Inventor: Jeffrey A. Loesche
  • Patent number: 8641904
    Abstract: A backwashing method incorporating a membrane filtration apparatus in which a ceramic filtration membrane including a substrate layer 11b having an extremely large number of filtration pores and a separating layer 11a having filtration pores smaller than those of the substrate layer is accommodated in a casing. Air controlled to a pressure p1 is supplied to the secondary side of the filtration membrane so as to drain the filtrated water in the membrane filtration apparatus gradually toward the primary side. After that, air pressure is increased to p3 so as to push the water in the filtration membrane toward the primary side together with the air, thereby peeling off any fouling substances. Unlike in conventional cases, a large amount of backwashing drain water is at no time drained at any one time, and thus, without reducing the effectiveness of backwashing, a backwashing drain pipe can be designed to have a small diameter.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: February 4, 2014
    Assignee: Metawater Co., Ltd.
    Inventors: Shinjiro Kanaya, Nobuhiro Aoki
  • Patent number: 8640883
    Abstract: A filtration barrier comprises first elements that are fibers, strips, or bristles wherein apertures between elements provide passages for a fluid transporting granules to the filtration barrier, and wherein the elements (11) are supported against deflection by second elements (12) when the fluid is flowing in a forwards direction whereby granules are prevented from accompanying the fluid through said passages by the barrier, but whereby the second elements do not support the first elements against deflection when the fluid flows in a (back-wash) direction opposite the forwards direction, when the elements (11a, 11b, 11c) become deflected by the fluid to increase the size of the apertures. In various embodiments of the invention the elements are supported at one end or both ends, and elements are arranged to deflect differently to further increase the apertures between neighboring elements as shown below.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: February 4, 2014
    Inventor: Ian D. Doig
  • Publication number: 20140020623
    Abstract: A fluid filtration device includes a housing unit and a filter member. The housing unit includes an internal chamber, an input port, a first output port, and a second output port. The input port may receive fluid into the internal chamber. The first output port may output fluid from the internal chamber received by the input port to establish a first fluid flow therein. The second output port may output fluid from the internal chamber received by the input port to establish a second fluid flow therein. The filter member may be disposed within the internal chamber to filter the fluid forming the first fluid flow.
    Type: Application
    Filed: July 17, 2012
    Publication date: January 23, 2014
    Inventor: Vladimir Vinetskiy
  • Publication number: 20140014595
    Abstract: A self-cleaning system for a filter includes a filter element; a filter housing with first, second, and third ports; the first port being a fluid inlet; the second port being a fluid outlet, and the third port being a recirculation outlet, the first and second ports being on the upstream side of the filter element; the third port being on the downstream side of the filter element; enabling primary and transverse flow through the filter; whereby reverse flow via the third port is used to clean the filter element; the system including a one-way valve connected to the second port to inhibit reflux of drain fluid into filter. A recirculation pump and a drain pump are controlled to periodically drain the lint removed from the filter to the system drain.
    Type: Application
    Filed: November 8, 2011
    Publication date: January 16, 2014
    Applicants: ELECTROLUX THAILAND CO., LTD., ELECTROLUX HOME PRODUCTS PTY LIMITED
    Inventors: Rajan Koo, Anthony Seipelt, Narongsak Metta, Wat Khawkhan, Marcos Paulo Soares Bittencourt, Goran Macesic
  • Patent number: 8628665
    Abstract: A water treatment apparatus includes a tank, a driving unit, a filtered-water pipe, a filtering unit and at least one scraping unit. The tank includes a wall, an inlet pipe extending through an upper portion, and an outlet pipe extending from a lower portion. The driving unit is located on an external side of the tank. The filtered-water pipe extends throughout the tank and is connected to the driving unit. The filtering unit includes flat filtering bags located around the filtered-water pipe. The flat filtering bags can be spun together with the filtered-water pipe. The scraping unit includes scrapper assemblies each located between and in contact with two adjacent ones of the flat filtering bags.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 14, 2014
    Assignee: New Century Membrane Technology Co., Ltd.
    Inventor: Chi-Chang Kuo
  • Publication number: 20140004021
    Abstract: Systems and methods for treating a fluid with a body are disclosed. Various aspects involve treating a fluid with a porous body. In select embodiments, a body comprises ash particles, and the ash particles used to form the body may be selected based on their providing one or more desired properties for a given treatment. Various bodies provide for the reaction and/or removal of a substance in a fluid, often using a porous body comprised of ash particles. Computer-operable methods for matching a source material to an application are disclosed. Certain aspects feature a porous body comprised of ash particles, the ash particles have a particle size distribution and interparticle connectivity that creates a plurality of pores having a pore size distribution and pore connectivity, and the pore size distribution and pore connectivity are such that a first fluid may substantially penetrate the pores.
    Type: Application
    Filed: December 25, 2012
    Publication date: January 2, 2014
    Inventors: Charles E. Ramberg, Stephen A. Dynan, Jack A. Shindle
  • Patent number: 8613804
    Abstract: Systems and methods for dry cleaning articles using siloxane solvents are provided. In the systems and methods according to the present invention, the siloxane solvent suspends impurities extracted from the articles being cleaned, and the system filters off the impurities, thereby cleaning the articles.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: December 24, 2013
    Assignee: Greenearth Cleaning, LLC
    Inventors: James E. Douglas, Wolf-Dieter R Berndt
  • Publication number: 20130319957
    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: Application
    Filed: February 18, 2011
    Publication date: December 5, 2013
    Applicant: ORGANO CORPORATION
    Inventors: Hiroshi Sugawara, Yoshinori Ono
  • Patent number: 8591739
    Abstract: The present invention discloses a method and apparatus for separating particles and dissolved matter from a fluid stream. Specifically, the present invention includes a first pressure source which transports untreated 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 physics allowing the desired fluid to penetrate and pass into and through the filter media. The filtered fluid is then transported to a collection tank. The contaminant particulate matter retained on the exterior of the filter media may be removed by the 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 concentrator for further treatment.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: November 26, 2013
    Assignee: Tervita, LLC
    Inventors: Raymond Ford Johnson, Markley Dean Johnson, Rodney Grage
  • Publication number: 20130306578
    Abstract: Embodiments of the invention provide a method and system for providing a regeneration stage in a water treatment system. The method can include entering a first air bleed state to allow pressurized, deoxygenated air to exit the water treatment system, entering a second air bleed state to equalize a first air pressure of remaining deoxygenated air inside the water treatment system with a second air pressure outside the water treatment system, entering a backwash state to expel remaining deoxygenated air and particulates from inside the water treatment system, and entering an air draw state to allow oxygenated air to enter the water treatment system.
    Type: Application
    Filed: July 26, 2013
    Publication date: November 21, 2013
    Applicant: Pentair Residential Filtration, LLC
    Inventors: Andrew Tischendorf, Michael M. Lindfors, Kyle Paull
  • Patent number: 8585898
    Abstract: The present invention relates to a pressurized filtration plant that includes: a sealed tank (1) in which discs (2) are provided including filtering sectors (20) carried by a rotary shaft (3) and connected to collectors within said shaft, a dispenser (10) enabling the egress of filtrates, the discharge of spinning air and the intake of blowing air for releasing the spun cakes, at least one duct for supplying a liquid laden with solid particles, at least one duct or discharging the filtrates, and a hopper (1b) for recovering the solid particles, characterized in that the discs (2) are vertically arranged so that the lower portion thereof is submerged in buckets (4) covered with deflectors (41) and including means for scrapping solid material deposits on the outer walls thereof.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: November 19, 2013
    Assignee: Gaudfrin
    Inventor: Guy Gaudfrin
  • Patent number: 8580117
    Abstract: System and method for replacing a resist filter in such a manner as to reduce filter-induced wafer defects are described. In one embodiment, the system comprises a filtration system connected to a dispenser, the filtration system comprising a filter; and a switch connected to the filter for selectively connecting the filtration system to throughput one of a first chemical solution and a second chemical solution.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: November 12, 2013
    Assignee: Taiwan Semiconductor Manufactuing Company, Ltd.
    Inventors: Yao-Hwan Kao, Po-Chang Huang
  • Patent number: 8580115
    Abstract: A method of cleaning filtration modules for the treatment of raw water, or wastewater, or activated sludge, is provided by circulating particles in untreated water. The deposits located on the filter membrane outer surfaces are removed by the mechanical action of the particles, without significantly damaging the membrane. Initially, untreated water, wastewater, or activated sludge is chemically-mechanically pretreated. Then the untreated water or wastewater polluted with biologically active material is discharged into a membrane bioreactor system having a filtration unit including at least one filtration tank. At least one submerged filtration membrane module is present in the filtration tank. The untreated water or wastewater in this filtration tank is filled with particles and circulates inside the filtration tank. The particles are non-porous, biologically resistant polymer particles.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: November 12, 2013
    Assignee: Microdyn-Nadir GmbH
    Inventors: Stefan Krause, Reinhard Voigt, Peter Cornel
  • Patent number: 8574439
    Abstract: A valuable resource recovery system includes an engineered powder supply unit that supplies an engineered powder into drainage water (the engineered powder can adsorb a valuable resource and can be desorbed from the engineered powder), an agitation unit that agitates the drainage water supplied with the engineered powder, an engineered powder separation unit that separates the engineered powder from the drainage water agitated by the agitation unit, an engineered powder collection unit that collects the engineered powder separated by the engineered powder separation unit, and a desorption-recycle unit that desorbs the valuable resource from the engineered powder collected by the engineered powder collection unit to recycle the engineered powder and the valuable resource. According to the system, the valuable resource can be desorbed from the engineered powder and then recycled.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: November 5, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidetake Shiire, Nobuyuki Ashikaga, Shinobu Moniwa, Tomoaki Kiuchi
  • Publication number: 20130264296
    Abstract: A filtering apparatus removes solid material from a fluid in a channel. The filtering apparatus comprises a housing that comprises a substantially vertical passage, a substantially horizontal passage connected to the vertical passage, and an outlet connected to the substantially horizontal passage; a filter medium comprising a plurality of transverse rods and a plurality of filter plates rotatably disposed along each of the transverse rods; a guide track system configured to guide the endless belt from the channel to the outlet; and a drive mechanism configured to convey the filter medium around the closed loop. The guide track system comprises two or more release points where the bearing portions of the filter plates can rotate about the transverse rods so as to permit dislodgement of the solid material from the filter plates. The two release points are located in a portion of the closed loop in the substantially horizontal passage.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 10, 2013
    Inventors: Alejandro Mejia, Jesus Rodriquez, David Mitchell
  • Publication number: 20130248464
    Abstract: A filter assembly, a filter cartridge and method of filter fluid are provided. The filter assembly includes a filter base, a filter housing and a filter cartridge within the housing. The filter cartridge strips water from the dirty fluid flowing through the assembly. The filter cartridge defines a pair of fluid flow paths extending through a central cavity thereof. The fluid flow paths carry and keep separated a flow of cleaned fluid after it passes through filter media of the cartridge as well as the water that has been stripped from the dirty fluid flow.
    Type: Application
    Filed: March 26, 2012
    Publication date: September 26, 2013
    Applicant: Baldwin Filters, Inc.
    Inventor: Stephen Schweitzer
  • Publication number: 20130240459
    Abstract: An irrigation diverter for diverting a flow of liquid from a larger flow includes a housing, a filter to trap unwanted debris, a cleaner to remove the trapped debris from the filter, and a turbine to power the cleaner. The housing has an inlet and an outlet. The filter is disposed between the inlet and the outlet and operable to allow liquid entering the housing through the inlet to flow to the outlet while preventing debris in the liquid from reaching the outlet. The cleaner scrapes the filter to remove the debris trapped by the filter, and the turbine extracts energy from the larger flow of liquid to power the cleaner. By powering the cleaner with energy extracted from the flowing liquid, one does not have to frequently visit the diverter to manually remove debris from the filter. And, the filter may be continuously cleaned to prevent a buildup of debris trapped by the filter.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 19, 2013
    Inventor: Frank Andrews
  • Patent number: 8524075
    Abstract: A fluid pressure vessel has a filter cartridge with spaced headers positioning cylindrical pleated filter media. The headers form an inlet chamber communicating with the inlet upstream side of the filter media and an isolated outlet chamber communicating with the downstream side of the filter media. A hollow piston with a toothed periphery having a circumferential slot is positioned closely adjacent the upstream side of the filter media. The piston hollow communicates with a drain chamber isolated from the inlet and outlet chambers. Upon opening of the drain chamber to atmospheric pressure, the pressure in the piston hollow and slot causes a lower pressure in a localized area of the media and back flushing of trapped material on the upstream side of the media to the drain chamber. An actuator is connected to selectively progressively move the piston and slot along the entire surface of the media.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: September 3, 2013
    Assignee: Eaton Corporation
    Inventor: Mark Anthony Quintel
  • Patent number: 8518273
    Abstract: The method and arrangement is for cleaning at least one of filter sheets and filter cakes in a pressurized white liquor filter with spray nozzles and driving fluid. The white liquor filter is used in a causticizing process in which green liquor is causticized before the white liquor filter by the addition of lime and in which it forms during the process a lime mud slurry. The white liquor filter 101 is used to separate white liquor from the lime mud. The driving fluid for the spray nozzle is constituted principally by the filtrate that is obtained from the filter.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: August 27, 2013
    Assignee: Metso Paper Sweden AB
    Inventors: Patrik Lownertz, Magnus Ingelman
  • Patent number: 8518274
    Abstract: A filter device operating method involves a plurality of filter elements (21) received in a filter housing having a filter inlet for a fluid to be filtered and a filter outlet for the filtered fluid. Flow through the filter elements (21) is possible in both directions for filtration or backwashing. Because the shut-off element (41) is a fast-closing plate valve (43) actuated by a hydraulic piston (53) and blocks the fluid connection so quickly, a feeding effect is created in the manner of a pressure blow on the backwashed filter element (21). The feeding effect increases the cleaning of pollution on the filter element (21), achieving an improved backwashing cleaning.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: August 27, 2013
    Assignee: Hydac Process Technology GmbH
    Inventors: Ralf Wnuk, Jörg Hermann Gerstner, Bernhard Schlichter
  • Publication number: 20130213905
    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: Application
    Filed: October 25, 2011
    Publication date: August 22, 2013
    Inventor: Amir Cohen
  • Patent number: 8506806
    Abstract: A method of operating a membrane filtration module (5), the module (5) including one or more membranes (7) extending longitudinally between vertically spaced upper and lower headers (8, 9) into which the ends of the membranes (7) are potted. The membranes (7) have a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall. At least one of the upper and/or lower headers (8, 9) has one or more openings (10) therein and the method including flowing the feed, at least in part, through the one or more openings (10) for application to the membrane wall. Apparatus for performing the method is also disclosed.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: August 13, 2013
    Assignee: Siemens Industry, Inc.
    Inventors: Thomas William Beck, Warren Thomas Johnson
  • Patent number: 8506812
    Abstract: The present invention relates to a membrane separation method and a relevant equipment, in particular to a method and an equipment for membrane separation utilizing concentration polarization during membrane filtration process, especially, to a concentration process and equipment and a drawer special for drawing a concentration polarization layer. The direct removal of the concentration polarization layer from membrane surface not only decreases the adverse influence of concentration polarization on membrane separation but also obtains concentrated retention components, thereby significantly improving the ability to maintain membrane flux, solving the twinborn problems concerning concentration polarization and membrane fouling during the membrane separation process, and achieving a high-efficiency concentration for retention components.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: August 13, 2013
    Assignee: Institute of Process Engineering, Chinese Academy of Sciences
    Inventors: Yinhua Wan, Xiangrong Chen, Zhiguo Su, Guanghui Ma, Xiaoguang Jiao, Fei Shen, Zhanfeng Cui
  • Patent number: 8496839
    Abstract: A filter device including at least one filter chamber between a filter plate and a counter plate when the device is closed, into which chamber a suspension can be inducted on a cake side of a filter cloth through at least one filling shoe anchored in the filter plate and clamping the cloth with the filter plate in a sealing manner. The suspension permeates the cloth to the filtrate side, wherein the suspension solid content deposits on the cloth as a filter cake, and the filter and counter plates are offset from each other when the device is open, and the cake is removable from the chamber. In order to simplify the disassembly of the cloth, the shoe is movably anchored in the filter plate, and the shoe is automatically lifted off from the filter plate and the clamping of the filter cloth is released when the device is opened.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: July 30, 2013
    Assignee: Outotec Oy
    Inventor: Heinz Bonn
  • Publication number: 20130168332
    Abstract: A filter apparatus for removing contaminants from a fluid and having an internal chamber with an adjustable volume is provided. Filter media priming to dislodge trapped gas is facilitated by the filter apparatus. A method of priming a filter cartridge containing a filter media is also provided.
    Type: Application
    Filed: December 30, 2012
    Publication date: July 4, 2013
    Applicant: DELCATH SYSTEMS, INC.
    Inventor: Delcath Systems, Inc.
  • Publication number: 20130168330
    Abstract: The invention relates to a process for filtration of fluids, especially of aqueous media, by means of a backflush filter apparatus consisting of a cylindrical housing, a cylindrical and perforated support body installed coaxially therein, a filter material, a support fabric, and a mobile backflush device present therein, said process enabling improved removal of fine and ultrafine particles, and of particles with greasy or compressible consistency, and allowing higher solid concentrations. The process according to the invention has the steps below. a) Formation of a filtercake in the perforation of the support body; b) deposition of the relatively fine particles or of the particles with greasy or compressible consistency on or in the filtercake; c) backflushing after attainment of the predefined filter loading or of the maximum permissible pressure differential, or when the filtrate volume flow goes below a minimum.
    Type: Application
    Filed: March 10, 2011
    Publication date: July 4, 2013
    Applicant: LENZING TECHNIK GmbH
    Inventors: Stefan Strasser, Roman Grösswang, Johannes Kneissl, Georg Eisl, Klaus Brandt
  • Publication number: 20130146548
    Abstract: A static screen has a plurality of screening bodies and a plurality of aeration devices downstream of the screening bodies. Each aeration device is associated with a set of one or more of the screening bodies. Each aeration device may be a pulsing aerator. The pulsing aerators do not all release air at the same time. Each screening body works through periods of dead end filtration separated by backwashing events. The backwashing events comprise introducing a slug or pulse of air into the bottom of the screening body. Flow through the static screen continues at all times because the screening bodies are not all backwashed at the same time. The static screen may be used to remove trash from water flowing to an immersed membrane unit. Alternatively, the static screen may be used to provide primary wastewater treatment.
    Type: Application
    Filed: December 8, 2011
    Publication date: June 13, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Pierre Lucien COTE, Jeffrey Ronald CUMIN
  • Patent number: 8444863
    Abstract: A method of treating a hollow fiber membrane microfiltration filter having an influent side and an effluent side to improve performance of the filter is disclosed. The method entails sealing imperfections in surfaces of the filter by flushing the filter with a liquid aqueous suspension of particulates. Filter cartridge devices also are disclosed. The devices may include a bactericidal chamber. A radial flow filter may be included in the devices. The filter cartridges may include a drain tube positioned within the filter for removing of effluent generated by the filter. A plurality of filter cartridges may be positioned on the drain tube.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: May 21, 2013
    Assignee: Streamline Capital, Inc.
    Inventors: Wei-Chih Chen, Kevin P. Nicolazzo, Bryan E. Kepner
  • Patent number: 8444855
    Abstract: A method for removing contaminants from a fluid-material comprising: providing at least one substrate comprising a three-dimensional knit in an initial configuration made of knitted polymeric fiber which substantially resumes the initial configuration after it is released from stretching or compressing force; and submerging said at least one substrate in a fluidic material for treatment of the fluidic material.
    Type: Grant
    Filed: June 29, 2008
    Date of Patent: May 21, 2013
    Inventors: Jonah Gavrieli, Pinhas Hascalovich
  • Publication number: 20130118999
    Abstract: A self-clearing filter for filtering a fluid, the self-clearing filter comprising a filter wall having a lumenous side and an external side and a pump for creating a flux of the fluid to impinge against the external side of the filter wall. Methods for filtering a fluid by diverting a portion of the fluid flux to impinge against the filter.
    Type: Application
    Filed: January 10, 2013
    Publication date: May 16, 2013
    Applicant: ECKMAN ENVIRONMENTAL CORPORATION
    Inventor: Eckman Environmental Corporation
  • Patent number: 8440088
    Abstract: A priming method for a filter, whereby the outlet of a spent filter is connected to the inlet of a fresh filter, and the spent filter is inverted. A drain in the spent filter is then opened to allow air to enter the spent filter and fluid to drain from the clean side of the spent filter into the fresh filter.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: May 14, 2013
    Assignee: Parker-Hannifin Corporation
    Inventor: Michael D. Clausen
  • Publication number: 20130112629
    Abstract: A medical functional device, provided and designed for single use in a method for extracorporeally treating the blood of a patient, includes at least one process fluid circuit or sections thereof, each provided for receiving a process fluid, at least one first filter device arranged within the process fluid circuit or a section thereof and at least one second filter device arranged within the process fluid circuit or a section thereof. The present invention further relates to a process fluid and a medical treatment apparatus.
    Type: Application
    Filed: June 27, 2011
    Publication date: May 9, 2013
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Matthias Brandl, Michael Herrenbauer, Wolfgang Wehmeyer
  • Publication number: 20130105415
    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: Application
    Filed: October 28, 2011
    Publication date: May 2, 2013
    Inventors: Yongming Xia, Jeffrey S. Devine, Charles G. Dannemann
  • Publication number: 20130087508
    Abstract: An apparatus and process of continuous, filtration of cooking oil during food processing to reduce and control free-fatty-acids and undesirable coloration in the cooking oil, including the movement of oil from a vessel to a flat-bed pressure chamber, where the oil is filtered through a stainless steel mesh screen under pressure. Differential pressure in the chamber causes the system to run the oil to a sister filter chamber which takes over the filter function while the first chamber cleans its filter. The filters are cleaned by inducing a high pressure inert gas into the filter chamber that dries the sediment, and then a mechanical sweep removes the sediment to a waste container. The resulting alternating process of filtering and filter cleaning between two chambers is fully automated and provides filtering that considerably extends oil life.
    Type: Application
    Filed: October 10, 2011
    Publication date: April 11, 2013
    Inventor: Gary Haddock
  • Publication number: 20130087509
    Abstract: A filtration system and method are provided for removing suspended solids and other affiliated pollutants from stormwater runoff and any other contaminated water. The filtration system and method utilize a filter having a geosynthetic material. By improving or replacing a conventional filtration system, such as a sand filtration system, with a geosynthetic material, the removal efficiency of suspended solids and affiliated pollutants is maintained or improved and the lifespan of the filtration system is lengthened due to simpler cleaning processes and a reduced need for material replacements. The filter can be a retrofit filter for fitting to existing storm drains for removing suspended solids and affiliated pollutants.
    Type: Application
    Filed: September 10, 2012
    Publication date: April 11, 2013
    Applicant: University of Maryland
    Inventors: Allen P. Davis, Ahmet H. Aydilek, David M. Ayres, Carmen Franks
  • 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
  • Publication number: 20130062290
    Abstract: The present invention relates to the technical field of environmental protection, especially relating to an efficiently-inactivating and energy-saving method for processing ship ballast water, which comprising the following processes: A) a filtering process, in which ship ballast water is filtered to remove the large grained organisms and solids; and B) a sterilizing process, in which the filtered water flows through a sterilization processing unit to have the organisms and bacteria in the water killed. Correspondingly, the present invention also discloses a system for processing ship ballast water, which has advantages as follows: low energy consumption, high efficiency, convenient installation simple and no pollution after processing.
    Type: Application
    Filed: May 12, 2010
    Publication date: March 14, 2013
    Applicant: QINGDAO HEADWAY TECHNOLOGY CO., LTD.
    Inventors: Xuelei Cao, Bingyan Liu, Qinghua Du, Zhongsheng Guo
  • Patent number: 8394256
    Abstract: The present invention is a process for removing waxy haze from and improving the filterability of base stocks including heavy mineral oil base stocks, gas-to-liquids (GTL) and hydrodewaxed or hydroisomerized waxy feed basestocks by filtering the waxy haze causing particles out of the base stock employing a filter characterized by a high surface area of pores accessible to the haze wax particles which have particles dimensions of no more than about 5 microns.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: March 12, 2013
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: James W. Gleeson, Eric B. Sirota, Charles L. Baker, Dennis A. Gaal, David Mentzer, John E. Gallagher, Jr., Min Chang, Norman G. Cathcart, Stephen A. Geibel, Mark F. Hurwitz, Tore H. Lindstrom, Michael B. Whitlock
  • Patent number: 8394279
    Abstract: Methods for regenerating filter aids which comprise inorganic, natural or semisynthetic filter aids. The method comprises subjecting the filter aid to a first treatment with an aqueous alkaline solution, treating the filter aid with enzymes, treating the filter aid with a surfactant, and subjecting the filter aid a second treatment with the aqueous alkaline solution. The enzyme treatment and the surfactant treatment steps may be carried out simultaneously or in any order.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: March 12, 2013
    Assignee: BASF SE
    Inventors: Helmut Meffert, Marianna Pierobon, Tobias Petsch, Julia Brodersen, Hermann Josef Feise, Ates Erk, Jörg Kreβ, Ralf Mar, Ralf Lachmuth, Robert Bayer
  • Patent number: 8382993
    Abstract: A removable drain filter apparatus (20) with an housing (22) connectable with upstream and downstream drain pipes (40, 46) has a filtering chamber wider than the drain pipes and divided into an upstream portion (78) and a downstream portion (82) by a generally planer filter element (50). A hatch cover (32) carries a downwardly extending central core (76) with an O-ring seal (84), a filter securement member (86) for pressing the filter element (50) against an underlying support ledge (29) and a drain hole plug (88). The location of the O-ring (84) relative to the filter element (50) and the plug (88) being tapered enables the filter housing (22) to be drained of any water during removal of the hatch cover and before the watertight seal is broken to eliminate leakage of drain water out of the housing (22) when the hatch (31) is completely opened. The filter (50) bends out of the way of a plumber's auger (96).
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: February 26, 2013
    Assignee: Clear Drain Industries, LLC
    Inventors: Dennis E. Wisek, Kenneth T. Duffy, Sr., Troy W. Livingston
  • Patent number: 8366942
    Abstract: Method for the liquid solid separation of material mixtures and suspensions in which the material mixture under pressure is fed into a closed chamber having at least one filter surface and a hydrostatic pressure is generated within said chamber for separating the liquid phase. After separating the liquid phase the chamber is opened and the filter surface together with the filter cake is removed from said chamber. The material mixture firstly is treated by the means of hydrostatic pressure of about up to 0.2 bar, wherein 80 to 90% of the fed volume is removed as filtrate. Thereafter the concentrated remaining volume is drawn off and is further treated in the closed chamber with a pressure of up to 5 bar. By reducing the volume of the chamber finally with a pressure of up to 50 bar the remaining filtrate is separated.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: February 5, 2013
    Inventor: Albert Bähr