Coiled Membrane Patents (Class 210/321.74)
  • Patent number: 10717050
    Abstract: A spiral wound membrane module adapted for hyperfiltration and including at least one membrane envelope and feed spacer sheet wound about a central permeate tube to form an inlet and outlet scroll face and an outer periphery, wherein the feed spacer sheet includes: i) a feed entrance section extending along the permeate collection tube from the inlet scroll face toward the outlet scroll face, ii) a feed exit section extending along the outer periphery from the outlet scroll face toward the inlet scroll face, and iii) a central feed section located between the feed entrance section and the feed exit section; and wherein the feed entrance section has a median resistance to flow in a direction parallel to the permeate collection tube that is less than 25% of the median resistance to flow of the central feed section in a direction perpendicular to the permeate collection tube.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: July 21, 2020
    Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, INC.
    Inventors: Steven D. Jons, Michael S. Koreltz, Luke Franklin
  • Patent number: 10626033
    Abstract: There is described a bioreactor comprising a perforated tube for inputting wastewater therein, a textured wall, such as a geotextile membrane, and an oxygenating unit comprising a pressurized air bubble diffuser. The wall is spirally installed around the perforated tube, defining a passageway fluidly connected to the perforated tube and along which the wastewater inputted in the perforated tube is forced to travel. The membrane is adapted for hosting aerobic bacteria at a surface thereof. The oxygenating unit is provided at a bottom of the passageway for oxygenating the passageway. The bioreactor can be included in a treatment apparatus comprising primary treatment chambers and a decantation chambers, forming a standalone unit which is compact and easy to install.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: April 21, 2020
    Assignee: LES ENTREPRISES CHARTIER (2009) INC.
    Inventors: Leo-Michel Chartier, Michel Chartier
  • Patent number: 10473010
    Abstract: Disclosed are: a separation element (20) of a liquid separator (10) for the separation of liquid from an aerosol; a separation medium (38); a liquid separator (10); and a method for producing a separation element. The separation element (20) has at least one separation medium (38) for separating at least the liquid, the separation medium being arranged circumferentially about an element axis (22) in at least one medium layer (40). The aerosol is able to flow through the separation element (20) radially relative to the element axis (22). At least one medium layer (40) has, on a radially inward circumferential surface, at least one channel-shaped indentation (42) extending axially to the element axis (22) to realize at least one channel (44) for separated liquid.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: November 12, 2019
    Assignee: MANN+HUMMEL GmbH
    Inventors: Thomas Grein, Markus Zuerker
  • Patent number: 10335739
    Abstract: A spiral wound membrane element and a method for cleaning a spiral wound membrane sheet are provided. The spiral wound membrane element comprising a perforated central tube; one or more membrane sleeves, each sleeve comprising two membrane sheets enclosed at two edges around a feed spacer sheet and wrapped around the central tube; a permeate carrier sheet attached to the central tube at a first edge opposite a second edge; and a seal on third and fourth edges of the permeate carrier sheet. The method comprises introducing two solution with different solute concentration to two sides of the spiral wound membrane sheet; establishing a concentration gradient between the first and second sides; communicating a first solvent from the first side to the second side to remove a foulant located on the second side of the membrane sheet; and collecting a waste stream that contains the foulant.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: July 2, 2019
    Assignee: BL TECHNOLOGIES, INC.
    Inventors: Chang Wang, Chen Wang
  • Patent number: 10335737
    Abstract: A filtration assembly including: a hyperfiltration assembly including: a high pressure vessel including a feed port, concentrate port and permeate port, and a plurality of serially arranged spiral wound hyperfiltration membrane modules; a bioreactor assembly including: a low pressure vessel comprising a first and second port, and a plurality of spiral wound bioreactors located within the low pressure vessel with each bioreactor comprising a flat sheet having two opposing bio-growth surfaces and a feed spacer spirally wound about an axis; and a fluid flow pathway extending from a fluid feed source: into the first port of the low pressure vessel, through the bioreactors and out the second port of the low pressure vessel, and into the feed port of the high pressure vessel, through the membrane modules and out of the concentrate port and permeate port.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: July 2, 2019
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Steven D. Jons, Jon E. Johnson, Steven Rosenberg
  • Patent number: 10272387
    Abstract: To provide a modified forward osmosis (FO) membrane module for flow regime improvement, the FO membrane module includes but not limited to: a water inlet; a water outlet; a forward osmosis (FO) membrane; a frame; and folded plates for improving flow regime in which draw solution is introduced into the water inlet of membrane module, then flowed through flow channels composed by three opposite folded plates vertically arranged on upper and bottom portions of the frame alternatively along horizontal direction with equal space; and drawn out from the water outlet. The flow regime improvement is achieved by increasing number of flow-guide folded plate, which results in the decrease of internal concentration polarization and membrane fouling. Structure of frame is modified to improve flow regime and to satisfy requirement of convenient and reliable connections between numbers of membrane modules in the FO membrane system.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 30, 2019
    Assignee: TONGJI UNIVERSITY
    Inventors: Qiaoying Wang, Jie Wang, Zhiwei Wang, Zhichao Wu, Yanqiang Ma, Xueye Wang, Chen Pan, Mei Chen, Zimeng Li, Kaili Yan
  • Patent number: 10258928
    Abstract: A spiral wound membrane module adapted for hyperfiltration and including at least one membrane envelope and feed spacer sheet wound about a central permeate tube to form an inlet and outlet scroll face and an outer periphery, wherein the feed spacer sheet includes: i) a feed entrance section extending along the permeate collection tube from the inlet scroll face toward the outlet scroll face, ii) a feed exit section extending along the outer periphery from the outlet scroll face toward the inlet scroll face, and iii) a central feed section located between the feed entrance section and the feed exit section; and wherein the feed entrance section has a median resistance to flow in a direction parallel to the permeate collection tube that is less than 25% of the median resistance to flow of the central feed section in a direction perpendicular to the permeate collection tube.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: April 16, 2019
    Inventors: Steven D. Jons, Michael S. Koreltz, Luke Franklin
  • Patent number: 10159938
    Abstract: A module includes a bonded portion in which the hollow-fiber-membranes are bonded and fixed together by potting material at least in an end portion of each of the hollow-fiber-membranes. Each of the hollow-fiber-membranes has a resin impregnation portion in which resin is impregnated into an outer surface side of each of the hollow-fiber-membranes at least in the end portion where each of the hollow-fiber-membranes is bonded and fixed together. In the end portion of the hollow-fiber-membranes, a leading edge of the resin impregnation portion toward the other end of each of the hollow-fiber-membranes is located closer to the other end than a leading edge of the bonded portion toward the other end. The thickness of the resin impregnation portion in the direction of the wall thickness of the hollow-fiber-membranes is 10 to 70% with respect to the thickness of the hollow-fiber-membranes.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: December 25, 2018
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Kohei Nakamoto, Naoyuki Shinohara
  • Patent number: 10076620
    Abstract: An anesthetic circuit is provided for treating a patient. The anesthetic circuit includes a membrane having a plurality of hollow fibers. Also provided is a fluid separation apparatus connectable to an anesthetic circuit. In a further embodiment, a method is provided for anesthetic treatment of a patient.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: September 18, 2018
    Assignee: DMF MEDICAL INCORPORATED
    Inventors: Klaus Michael Schmidt, David Cecil Roach, Florentin Michael Wilfart
  • Patent number: 9993776
    Abstract: The present invention relates to a separation membrane module including: a pressure vessel; a plurality of separation membrane elements which are provided in the pressure vessel and each includes: a wound membrane body in which a separation membrane, a liquid-to-be-treated channel member and a permeated liquid channel member are spirally wound around a permeated liquid collection tube; and anti-telescoping plates disposed on both ends of the wound membrane body; and a thrust load holding member which holds a thrust load generated when water passes through the separation membrane elements, in which a thrust load adjustment holding member which is capable of adjusting the thrust load by adjusting a total length of the separation membrane elements in the pressure vessel, is provided on at least one end of the thrust load holding member in an axial direction of the separation membrane elements.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: June 12, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shinji Nishioka, Gentaro Horikawa, Koji Fujiwara, Kazuya Sugita
  • Patent number: 9968889
    Abstract: A membrane envelope stack for gas separation comprising membrane envelopes bonded together by means of an adhesive having a tensile E-modulus of at least 1600 N/mm2 and/or an elongation at break of 20% or less and/or a Tg of at least 50° C.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 15, 2018
    Assignees: Fujifilm Manufacturing Europe B.V., Fujifilm Corporation
    Inventors: Peter Jessen, Yujiro Itami
  • Patent number: 9931597
    Abstract: A membrane envelope comprising a feed spacer, one or more membrane sheets and an adhesive, to give a glue line laminate having a tensile E-modulus of at least 1600 N/mm2 and/or an elongation at break of 13% or less.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: April 3, 2018
    Assignees: Fujifilm Manufacturing Europe B.V., Fujifilm Corporation
    Inventors: Peter Jessen, Yujiro Itami
  • Patent number: 9844625
    Abstract: Hydrophilic flat-sheet membrane based on a hydrophobic first polymer from the group consisting of aromatic sulfone polymers and a hydrophilic second polymer, wherein the membrane has a thickness in the range between 30 and 200 ?m, a first and a second surface and a supporting layer having a three-dimensional sponge-like network structure, wherein the supporting layer has a first cover layer on the side thereof facing the first surface and a second cover layer on the side thereof facing the second surface, which cover layers are formed integrally with the supporting layer, and wherein the first and second surfaces have approximately oval or circular openings which penetrate the first and second cover layers, respectively, and are connected to the supporting layer, wherein the average diameter of the openings in the surfaces differ by a factor of less than 2, wherein the three-dimensional network structure of the supporting layer is made up of thick branches and a continuous pore system, and the predominant pro
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: December 19, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Frank Schneider, Martin Czernik, Walter Stripp, Ramona Tatsch
  • Patent number: 9795925
    Abstract: A membrane separation unit can include a cartridge, at least one membrane disposed within the cartridge, at least one seal plate, and a sealing ring seated in an outer groove of the seal plate. The at least one seal plate can seal one end of the cartridge. The seal plate can have at least one venting hole that forms a passage between the interior of the cartridge and the outer groove. The sealing ring can have a cross-sectional shape that forms a circular venting path between the sealing ring and the seal plate. The sealing ring can include one or more grooves to allow fluid to vent into an annular space between a device housing and the membrane separation unit. The sealing ring can include an outer surface having, in cross-section, two flattened surfaces that form an angle of between 90° and 175° there between.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: October 24, 2017
    Assignee: LG NANOH20, INC.
    Inventors: Frederick K. Lesan, Nicholas Kordani
  • Patent number: 9757669
    Abstract: A filtration element including a cylindrical housing enclosing a fluid filtration media extending along an axis (X) between opposing ends with a first and second end cap located at each end, wherein each end cap includes: i) an annular surface co-extensive with the housing, and ii) outer face laying in a plane perpendicular with the axis (X). The outer face of at least one end cap comprises an annular groove. A face seal including a base is located within the annular groove. A flexible lip extends axially from the base and axially beyond the outer face of the end cap and is adapted to engage with an abutting outer face of an end cap of an adjacently positioned filtration element.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: September 12, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Jon E. Johnson, Matthew D. Mittag
  • Patent number: 9616390
    Abstract: A separation membrane includes a separation membrane main body having at least a substrate and a separation function layer; and a channel material having a composition different from that of the separation membrane main body and affixed to a substrate-side surface of the separation membrane main body, wherein the channel material is discontinuous in a first direction and continuous in a second direction from one end to another end of the separation membrane main body.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: April 11, 2017
    Assignee: Toray Industries, Inc.
    Inventors: Hiroho Hirozawa, Masakazu Koiwa, Kentaro Takagi, Yoshiki Okamoto, Hiroyuki Yamada, Yasuo Seike, Tsuyoshi Hamada, Masahiro Kimura
  • Patent number: 9579606
    Abstract: Parallel membrane elements are arranged in parallel within a pressure vessel. A sealing body is disposed within the pressure vessel and is compressed against an inner surface of the pressure vessel to provide a leak-right seal in between a feed gas side of the sealing body and a non-permeate side of the sealing body. The sealing body may be slid within the pressure vessel without damaging the sealing body and in all cases without requiring mechanical assistance.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: February 28, 2017
    Assignee: Air Liquide Advanced Technologies U.S. LLC
    Inventors: Sandeep K. Karode, Karl S. Beers
  • Patent number: 9566553
    Abstract: A fluid separation assembly and method are provided. The assembly has a hollow fiber bundle with a plurality of hollow fiber membranes. The assembly further has a pair of tubesheets, each encapsulating respective ends of the hollow fiber bundle. The assembly further has a plurality of radial through openings formed along a circumference of one or both of the tubesheets and radially through a body portion in one or both of the tubesheets. The radial through openings include center connected radial through openings and partial radial through openings, and intersect each, or substantially each, of the hollow fiber membranes. The assembly further has a housing surrounding the hollow fiber bundle and the tubesheets. The housing has a feed inlet port, a permeate outlet port, and a non-permeate outlet port. The feed inlet port and the non-permeate outlet port are in parallel alignment with a longitudinal central axis of the housing.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: February 14, 2017
    Assignees: The Boeing Company, Porogen Corporation
    Inventors: Brent Kenneth Theodore, Donald Ray Snow, Jr., James P. Huang, Michael J. Robinson, Ivana Jojic, Benjamin Bikson
  • Patent number: 9492792
    Abstract: A piece of substrate material is formed under heat and pressure against a cavity into a shaped substrate sheet having one or more depressions. Two substrate sheets are bonded together to form a substrate wherein the one or more depressions form one or more interior channels. The substrate, if not formed with pre-coated substrate material, is coated with a dope and quenched to form a filtering membrane. A plurality of membranes may be placed side by side to form a bundle with permeating ends of the membrane, which are open to the one or more interior channels, separated by gaps or spacers. The bundle is connected to a header to produce a module. The module can be assembled into a cassette.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: November 15, 2016
    Assignee: FIBRACAST LTD.
    Inventors: Ionel Tomescu, Rafael Simon
  • Patent number: 9452390
    Abstract: The present disclosure describes a spiral cross-flow filter. The spiral cross-flow filter includes a filter element having a continuous web of leaves formed by pleating a laminate filter element. The filter element may include a composite filter material including a first layer of a membrane material adjacent an outer shell, and a second layer of a permeate spacer material adjacent a permeate tube. The plurality of leaves wrap around the permeate tube in a uniform “spiral” configuration and may be separated by feed spacers.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: September 27, 2016
    Inventor: Scott P. Yaeger
  • Patent number: 9381469
    Abstract: A radial seal is described for use in a filtration system having annular elements. The rings or annuli fit in a groove in an outer surface of a seal plate. Each annulus has an outer diameter larger than the inner diameter of a cylindrical housing of the filtration system. A gap in the annulus has a width selected to enable the annular element to deform sufficiently to permit insertion of the at least one annulus into the cylindrical housing. Two or more annuli can be configured such that the gaps of the annuli are misaligned when both annuli are installed in the groove, thereby minimizing leakage in operation. A registration system includes a registration element that cooperates with a registration element of the other annulus to ensure misalignment of the gaps of the pair of annuli.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: July 5, 2016
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Curtis J. Elwell, Frederick K. Lesan, Victor Verbeek, Peter F. Metcalfe
  • Patent number: 9242213
    Abstract: A forward osmosis system using submerged hollow fiber membranes, a draw solution of superparamagnetic nanoparticles (preferably an iron oxide core with a silica shell that is chemically treated with a dispersant stabilizing it in a permanent suspension), that produces an osmotic pressure that drives fluid through the semipermeable membrane and a magnetic field produced by either a permanent magnet or solenoid-type electromagnet that is applied to either separate and reuse or to prevent the movement of the magnetic nanoparticles away from the membrane surface area. Since forward osmosis is independent of both the type of membrane (hyper, nano, ultra, or micro) and the fluid type (the fluid being processed can be oil or water-based), it can be widely applied to many fluid processes within the water treatment (wastewater treatment, demineralizing industrial cooling water, and seawater desalination) and non-water treatment industries such as the food and beverage, medical, and chemical industries.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: January 26, 2016
    Inventor: Terrence W. Aylesworth
  • Publication number: 20150144560
    Abstract: There is provided a separation membrane unit wherein a plurality of separation membrane subunits (11a-c) communicate with raw water lines A (9a-c) that comprise raw water supply valves W (10a-c), water discharge lines B (12a-c) that comprise water discharge valves X (13a-c), raw water lines C (16a-c) that comprise first raw water communication valves Y (17a-c), raw water lines D (19a-c) that comprise second raw water communication valves Z (20a-c), and permeate water lines E (21a-c); and wherein the raw water lines A communicate with the water discharge lines B, the raw water lines C communicate with the raw water lines D, the raw water lines A communicate with a main raw water line 7, the water discharge lines B communicate with a main water discharge line 14, the raw water lines C and the raw water lines D communicate with a collection line 18, and the permeate water lines E communicate with a main permeate water line 22.
    Type: Application
    Filed: May 31, 2013
    Publication date: May 28, 2015
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Masahide Taniguchi, Kazunori Tomioka, Tomohiro Maeda
  • Patent number: 8999162
    Abstract: Water treatment systems and methods are provided to minimize membrane fouling and the required maintenance that results therefrom. A water treatment system includes a pressure vessel with a plurality of spaced-apart membranes disposed therein, and an impeller or other means for circulating feed water through the interior of the vessel and past the membranes. Antifouling particles (such as diatomaceous earth or activated carbon) and/or pellets can be added to the feed water inhibit membrane fouling and extend the useful life of the membranes.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 7, 2015
    Assignee: Econopure Water Systems, LLC
    Inventors: Diem Xuan Vuong, Michael Sean Motherway, Curtis Roth
  • Patent number: 8991027
    Abstract: The present invention is directed toward spiral wound modules along with methods for making and using the same. Several embodiments are described including methods for making spiral wound filtration modules using membrane sheet provided from a roll, wherein the membrane sheet is unrolled and assembled in a direction parallel to the permeate collection tube of the module.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: March 31, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Steven D. Jons, Allyn R. Marsh, III
  • Patent number: 8968566
    Abstract: A novel separator assembly for a spiral flow reverse osmosis apparatus is provided. In one embodiment, the separator assembly comprises a central core element comprising at least two permeate exhaust conduits and not comprising a concentrate exhaust conduit. Each permeate exhaust conduit defines an exhaust channel and one or more openings allowing fluid communication between an exterior surface of the permeate exhaust conduit and the exhaust channel, said permeate exhaust conduits independently defining a cavity between said conduits. The cavity is configured to accommodate a first portion of a membrane stack assembly comprising at least one feed carrier layer, at least two permeate carrier layers, and at least two membrane layers. A first portion of the membrane stack assembly is disposed within the cavity, and a second portion of the membrane stack assembly is wound around the central core element and forms a multilayer membrane assembly disposed around the central core element.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: March 3, 2015
    Assignee: General Electric Company
    Inventors: Philip Paul Beauchamp, Michael Kent Cueman, Daniel Jason Erno, Todd Alan Anderson, Dean David Marschke
  • Patent number: 8961790
    Abstract: A novel separator assembly for a spiral flow reverse osmosis apparatus is provided. In one embodiment, the separator assembly comprises a central core element comprising at least one permeate exhaust conduit and at least one concentrate exhaust conduit. Each exhaust conduit defines an exhaust channel and one or more openings allowing fluid communication between an exterior surface of the exhaust conduit and the exhaust channel, said exhaust conduits independently defining a cavity between said conduits. The cavity is configured to accommodate a first portion of a membrane stack assembly comprising at least one feed carrier layer, at least one permeate carrier layer, and at least one membrane layer. A first portion of the membrane stack assembly is disposed within the cavity, and a second portion of the membrane stack assembly is wound around the central core element and forms a multilayer membrane assembly disposed around the central core element.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: February 24, 2015
    Assignee: General Electric Company
    Inventors: Philip Paul Beauchamp, Michael Kent Cueman, Daniel Jason Erno, Todd Alan Anderson, Dean David Marschke
  • Patent number: 8940167
    Abstract: The invention relates to a filter assembly for membrane filtration—of liquids, and more in particular a spiral wound filter assembly with improved filtration performance. Provided is a spiral wound filter assembly comprising a permeate channel (5; 305, 325) for transporting permeate to the permeate outlet (12), said permeate channel being provided with at least one flow restriction (13; 113, 120; 213; 333) in form of check or control valves or ridges, for increasing the pressure in at least part of the permeate channel. The invention further relates to an apparatus comprising such a filter assembly, and to methods for using this apparatus.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: January 27, 2015
    Assignee: Friesland Brands B.V.
    Inventors: Albert van der Padt, Tjeerd Jongsma
  • Patent number: 8940169
    Abstract: A spiral wound module is suitable for use with high temperature water that is also very alkaline or has a high pH, for example SAGD produced water. The module uses a polyamide-based membrane with a polysulfone or polyethersulfone backing material. For other components, the module uses primarily one or more of, EPDM; polyamide; polyphenylene oxide; polyphenylene sulfide; polysulfone; polyethersulfone; polysulfonamide; polyvinylidene fluoride; mylar; fiberglass; and, epoxy. Polyester is not used. Polypropylene is not used for the feed spacer. For example, a module may use a PVDF feed spacer, a nylon permeate spacer and a polysulfone center tube. The center tube may be provided with 4 rows of 0.063? diameter holes and be rolled under high tension.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: January 27, 2015
    Assignee: General Electric Company
    Inventors: Phillip Goebel, David Olson, David M. Polizzotti, Abdul Rafi Khwaja
  • Patent number: 8911625
    Abstract: The invention includes a spiral wound module comprising at least one membrane sheet wrapped about a permeate collection tube wherein the membrane sheet (14) comprises a plurality of capillary channels in parallel arrangement with each other and which are in fluid communication with the permeate collection tube (12). Many additional embodiments are disclosed along with methods for making and using the module and corresponding components.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: December 16, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Gerald F. Billovits, Thomas E. Fisk, Steven D. Jons, David J. Moll
  • Patent number: 8883007
    Abstract: A fluid separation system includes a separation membrane having a pattern of features thereon.
    Type: Grant
    Filed: December 13, 2009
    Date of Patent: November 11, 2014
    Assignee: Aerojet Rocketdyne of DE, Inc.
    Inventors: Mark F. Buser, Alan B. Minick
  • Publication number: 20140263025
    Abstract: The invention relates to membranes, membrane modules, and applications therefor. In particular, the invention relates to the construction of membranes and membrane modules for use in osmotically driven membrane processes.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicant: OASYS WATER, INC.
    Inventors: Eric Maxwell, Inga B. Elkina, Nathan Hancock, Gary McGurgan
  • Patent number: 8828233
    Abstract: A multi-ported vessel system includes an outer pressure vessel containing a plurality of flow distribution tubes, each of which comprises a plurality of reverse osmosis membrane elements aligned serially within each tube. The outer pressure vessel includes bypass flow paths whereby feed water flows around each of the tubes within the vessel. Slots are disposed in the flow distribution tubes at the upstream end of each RO membrane element such that feed water reaches all RO membrane elements of the tubes in parallel. The serial alignment of the membranes also allows for serial water processing also. A product water tube collects the purified water from the reverse osmosis elements and provides it to a product water port. Brine water is provided to an output port to be discarded of for further processing. The parallel processing of feed water by all membrane elements results in increased productivity and reduced costs.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: September 9, 2014
    Assignee: MegaVessals, Inc.
    Inventor: Hany Armia Said
  • Patent number: 8815091
    Abstract: A spiral wound membrane module for forward osmotic use is disclosed. The membrane module may generally include a forward osmosis membrane in a spiral wound configuration. The module may include two inlets and two outlets, and may define first and second fluid flow paths. The inlets to each of the fluid flow paths may be generally isolated so as to prevent mixing. In some embodiments, the membrane module may include a distributer region and a collector region.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: August 26, 2014
    Assignee: Yale University
    Inventor: Robert L. McGinnis
  • Patent number: 8808645
    Abstract: Molecular filters are disclosed herein. An example of the molecular filter includes a rolled substrate having an interior surface and opposed ends that are substantially orthogonal to the interior surface. The rolled substrate defines a layer and a fluid flow path extending from one of the opposed ends to another of the opposed ends. A template is positioned on the interior surface of the rolled substrate. The template includes a matrix, and molecule template locations formed in the matrix.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 19, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Warren Jackson, Zhiyong Li
  • Patent number: 8808539
    Abstract: The invention provides a method and apparatus for continuous monitoring of permeate from membrane elements in a water treatment plant, including a desalination plant. The apparatus includes a probe that includes multiple sensors such that at least one sensor is associated with each membrane element. Each sensor is coupled to a node, which is configured to communicate a signal associated with the permeate quality to a central node sink. The node may communicate wirelessly with the node sink.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: August 19, 2014
    Assignee: Saudi Arabian Oil Company
    Inventors: Anastasios J. Karabelas, Ioannis Gragopoulos, Nicos P. Isaias
  • Patent number: 8778182
    Abstract: A spiral wound element and a seal assembly comprising: a ring-shaped seal disposed about a portion of an outer periphery of the element, a secondary pathway and a valve that selectively permits fluid flow through the secondary pathway.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: July 15, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Jon E. Johnson, Matthew D. Mittag
  • Patent number: 8758611
    Abstract: Disclosed are an edge member for membrane elements that can effectively improve adhesion with exterior finishing materials, and a membrane element that is equipped with the same. A plurality of types of undulations (134, 135) of different shapes are formed on the circumference of an extension (132) that extends from the main body (131) of an anti-telescoping member (edge member for membrane element) (13) toward a membrane roll body (11), and an exterior finishing material is attached to extend across the circumference of the extension (132) and the circumference of the membrane roll body. The adhesion between the anti-telescoping member (13) and the exterior finishing material can thus be effectively improved, since the exterior finishing material can be attached to the circumference of the extension (132) with the plurality of types of undulations (134, 135) in contact with the exterior finishing material.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: June 24, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Masashi Beppu, Toshimitsu Hamada
  • Patent number: 8758489
    Abstract: A radial seal is described for use in a filtration system having annular elements. The rings or annuli fit in a groove in an outer surface of a seal plate. Each annulus has an outer diameter larger than the inner diameter of a cylindrical housing of the filtration system. A gap in the annulus has a width selected to enable the annular element to deform sufficiently to permit insertion of the at least one annulus into the cylindrical housing. Two or more annuli can be configured such that the gaps of the annuli are misaligned when both annuli are installed in the groove, thereby minimizing leakage in operation. A registration system includes a registration element that cooperates with a registration element of the other annulus to ensure misalignment of the gaps of the pair of annuli.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: June 24, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Curtis J. Elwell, Frederick K. Lesan, Victor Verbeek, Peter F. Metcalfe
  • Patent number: 8747669
    Abstract: A separation module and method are disclosed for processing a liquid sample and providing high conversion by operating a single-pass tangential-flow process without a recirculation loop. In one embodiment, the separation module includes three reservoirs and has at least one long, thin channel with a large ratio of channel membrane area to: channel void volume; volume of a sample feed reservoir; and volume of the feed sample. In another embodiment, the separation module includes an external feed reservoir, an external retentate reservoir fluidly and a first vacuum source adapted to apply a first vacuum to the separation element disposed within the housing. The single-pass TFF separation element and single-pass process provides high conversion while operating with relatively low pressure sources. Certain embodiments disclosed herein can be used for the separation of blood.
    Type: Grant
    Filed: August 15, 2010
    Date of Patent: June 10, 2014
    Assignee: SPF Innovations, LLC
    Inventors: Alex G. Bonner, Gaston de los Reyes
  • Patent number: 8728213
    Abstract: A radial seal is described for use in a filtration system having annular elements. The rings or annuli fit in a groove in an outer surface of a seal plate. Each annulus has an outer diameter larger than the inner diameter of a cylindrical housing of the filtration system. A gap in the annulus has a width selected to enable the annular element to deform sufficiently to permit insertion of the at least one annulus into the cylindrical housing. Two or more annuli can be configured such that the gaps of the annuli are misaligned when both annuli are installed in the groove, thereby minimizing leakage in operation. A registration system includes a registration element that cooperates with a registration element of the other annulus to ensure misalignment of the gaps of the pair of annuli.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: May 20, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Curtis J. Elwell, Frederick K. Lesan, Victor Verbeek, Peter J. Metcalfe
  • Patent number: 8728315
    Abstract: A system, method and device are disclosed for bio-processing a feed stream and providing a constant output by operating a continuous single-pass tangential-flow process. The single-pass process provides high conversion concentration while operating at relatively low feed flow rates, and the process can also be used to provide constant output diafiltration.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: May 20, 2014
    Assignee: SPF Innovations, LLC
    Inventors: Gaston de los Reyes, Leon Mir
  • Patent number: 8661648
    Abstract: The present invention is directed toward spiral wound modules along with methods for making and using the same. Several embodiments are described including methods for making spiral wound filtration modules using membrane sheet provided from a roll, wherein the membrane sheet is unrolled and assembled in a direction parallel to the permeate collection tube of the module.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: March 4, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Steven D. Jons, Allyn R. Marsh, III
  • Publication number: 20140014569
    Abstract: A spiral separation membrane element including a plurality of separation membrane pairs wound around the outer peripheral surface of a water collection pipe, wherein the plurality of separation membranes include at least two sets of separation membrane pairs in which two adjacent separation membranes are stacked such that the water supply sides of the separation membranes form opposing surfaces, and the water supply-side surfaces at the ends of separation membranes close to the water collection pipe and parallel to the lengthwise direction of the water collection pipe are sealed by a sealing material.
    Type: Application
    Filed: March 23, 2012
    Publication date: January 16, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Hiroho Hirozawa, Hiroshi Umetani, Masakazu Koiwa, Kentarou Takagi, Masahiro Kimura
  • Publication number: 20130319943
    Abstract: A process that can alleviate the internal concentration polarization and can enhance membrane performance of a forward osmosis system includes the steps of passing a fluid in a forward osmosis system from a feed solution with a first osmotic pressure, through a membrane into a draw solution comprising a draw solute with a second osmotic pressure, where the first osmotic pressure is lower than the second osmotic pressure, the membrane includes an active layer and a support layer, and the membrane is oriented such that the active layer of the membrane faces a draw side, and the support layer faces a feed side; and applying an external force to the fluid on the feed side of the membrane.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Jintang Duan, Ingo Pinnau, Eric Litwiller
  • Patent number: 8568596
    Abstract: Provided are a membrane filtering device managing system by which the membrane filtering device can be managed with a better precision and membrane filtering device for use therein, as well as to a membrane filtering device managing method. At least two sensors of an electric conductivity sensor 11, a flow rate sensor 13, and a pressure sensor 15 are provided in at least two membrane elements 10 provided in a membrane filtering device 50. A managing device 200 obtains data from the at least two sensor, and compares the data with comparison data that represents a correlative relationship between a position along the axial line direction in the membrane filtering device 50 and a standard value obtained from the at least two sensor. Accordingly, it is possible to specify the cause of change occurring in the membrane filtering device 50 more definitely, and to carried out a suitable maintenance in accordance with the cause, so that the membrane filtering device 50 can be managed with a higher precision.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: October 29, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Takahisa Konishi, Norio Ikeyama, Kouji Maruyama, Yukio Fujiwara, Akira Ootani, Toshiki Kouno
  • Patent number: 8568589
    Abstract: Provided are a connection member capable of preventing leakage from a supply side to a permeating side from occurring by a simple means; and a separation membrane module using the connection member. The connection member (20) is used to connect in series a plurality of separation membrane elements equipped with end surface holding members (36) and to install the separation membrane elements in a pressure-resistant vessel (38). The connection member (20) is characterized in that, when the separation membrane elements are connected to each other, the connection member is engaged with respective grooves (36b) of the end surface holding members (36) adjacent to each other.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: October 29, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Yasuhiro Uda, Toshimitsu Hamada, Masashi Beppu, Shinichi Chikura, Nobuharu Tahara, Masakatsu Takata
  • Patent number: 8529762
    Abstract: The disclosed product water tube is for use with a filter element having a filter membrane. The product water tube has a tube wall with a plurality of apertures formed therein to allow permeate from the filter membrane to pass through the tube wall and into a center portion of the tube. The tube wall has an outer surface having a pattern of ridges and channels that conduct the permeate across the outer surface of the tube to the apertures.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: September 10, 2013
    Assignee: General Electric Company
    Inventor: Phillip T. Goebel
  • Patent number: 8512499
    Abstract: An approach to providing folded flute ends in z-filter media is provided. The approach generally involves providing an initial deformation in a flute or corrugation to form at least one foldable tip and then folding the at least one foldable tip over. Techniques for both supported deformation and unsupported deformation are provided. Preferred corrugated media having fold arrangements, filter constructions having such fold arrangements, and filter system using such filter constructions are provided.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: August 20, 2013
    Assignee: Donaldson Company, Inc.
    Inventors: Patrick Golden, Gregory L. Reichter, Daniel T. Risch
  • Patent number: 8506807
    Abstract: Disclosed herein is a spiral wound type filter cartridge and more specifically, a spiral wound type filter cartridge in which activated carbon fiber is provided. The inside of spiral wound type filter cartridge is capable of serving as a carbon filter in a water purifier, thus eliminating the necessity of the use of any carbon filter for pre- or post-treatment in the process of purifying raw water, reducing an overall size of the water purifier and considerably reducing costs associated therewith.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: August 13, 2013
    Assignee: Woongjincoway Co., Ltd.
    Inventors: Sun-Yong Lee, Doo-Won Han, Youn-Kook Kim, Hyoung-Jun Ahn, Eu-Jean Moon, Suk-Young Lee