Coiled Membrane Patents (Class 210/321.83)
  • Patent number: 10583400
    Abstract: Membrane elements that use multiple membrane leaves may have a limited total active membrane area due to an increased diameter at the ends of the element. Membrane leaves may comprise a permeate carrier positioned between one or more membrane sheets. Adhesive may be used to seal one or more edges of the membrane leaf. The membrane sheets, permeate carrier and the adhesive contribute to the thickness of the edges of the membrane leaf and the diameter at the ends of the element. A reduced thickness of the edges of the permeate carrier may reduce the diameter at the ends of an element. Another permeate carrier sheet may also be used that is distanced from at least one edge of the membrane sheet so the permeate carrier sheet does not contribute towards the increased diameter at the ends of the element.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: March 10, 2020
    Assignee: BL TECHNOLOGIES, INC.
    Inventors: Prashant Vishwanath Shrikhande, Steven John Harrold, Cha Moua, Phillip Goebel, Yatin Tayalia, Prasanna Rao Dontula
  • Patent number: 10576018
    Abstract: A system is provided for storage and reconstitution of IV solutions. The system may include one or more storage and reconstitution devices each configured to store and manipulate IV solution containers containing IV solutions in crystalline form that include hydration chemicals and therapeutic drugs. Crystalline hydration chemicals may include crystalline salts and sugars. The containers may be dimensionally precise enough for mechanical manipulation and configured such that sharp objects such as needles are not needed for fluid delivery to or from the container. Each storage and reconstitution device may store stacked containers and may include components for retrieval of a container from the storage and for reconstitution of the contents therein using a sterile water source within the device. IV doses may be manufactured, under appropriate standards, that can be mechanically reconstituted to produce high-quality doses in real time on the patient care unit or in the pharmacy.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: March 3, 2020
    Assignee: CareFusion 303, Inc.
    Inventors: Dennis Anthony Tribble, Thomas Utech
  • Patent number: 10532941
    Abstract: The water filtration system may include a support base. A first receptacle may be detachably disposed on the support base and configured to store source water. A second receptacle may be detachably disposed on the support base and configured to store supply water. A filter system may be disposed between the first receptacle and the second receptacle.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: January 14, 2020
    Assignee: Aqua Tru LLC
    Inventors: Peter G. Spiegel, Michael A. Pedersen
  • Patent number: 10391451
    Abstract: An osmosis element comprising a central permeate tube and a membrane element, the membrane having a first part and a second part, the first part having a top edge for location adjacent the central tube, the second part being disposed at the opposite edge, the first part comprising a material to allow water to flow therethrough, the second part comprising at least two adjacent permeate spacers extending from the first part to allow water to flow therethrough, the permeate spacers having a semi-permeable membrane attached to opposed faces of the two adjacent permeate spacers, the first part comprising a barrier extending from the vicinity of the top edge, the central tube comprising an external wall and a longitudinally extending internal separator defining a first channel and a second channel each extending longitudinally of the central permeate tube, at least one first aperture extending from the first channel though the external wall and at least one second aperture extending from the second channel through
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: August 27, 2019
    Assignee: I.D.E. TECHNOLOGIES LTD.
    Inventor: Boris Liberman
  • Patent number: 10099179
    Abstract: A reverse osmosis system comprises a permeate collection tube which is connected at one end to a distribution system for permeate which comprises at least one device for cleaning and/or disinfection. The permeate collection tube, the cleaning and/or disinfection device and a circulation pump are arranged in a circulation circuit.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: October 16, 2018
    Assignee: Vivonic GmbH
    Inventor: Manfred Volker
  • Patent number: 10040031
    Abstract: The present invention relates to a high-flux forward osmosis membrane assembly and a forward osmosis module using the same, and more specifically, to a forward osmosis membrane assembly capable of improving the flux inside an osmosis membrane and simultaneously promoting uniform flux along a fluid flow route by forming more channels inside the osmosis membrane in order to allow an osmotic action to be smoothly performed even if formed in a spiral wound shape, and minimizing the separation, which could occur, of a different osmosis membrane adhering to each other by minimizing the concentration polarization on the surface of the forward osmosis membrane by increasing the flux on the surface of the osmosis membrane through the promotion of turbulence along the channels and simultaneously forming separate channels inside the osmosis membrane, and a forward osmosis module in which the active area of a separation membrane capable of performing a smooth osmotic action and forming an osmotic pressure gradient is max
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: August 7, 2018
    Assignee: Toray Chemical Korea Inc.
    Inventors: Cheong Hee Kim, Jong Hwa Lee
  • Patent number: 9962629
    Abstract: The instant application relates to a high pressure spiral-type hollow fiber membrane fabric-containing module or contactor, comprising: a high pressure module housing or vessel; a pair of end caps; liquid end ports and at least one gas port; and at least one membrane cartridge, wherein each module or contactor has one or more shims, spacers, protrusions, and/or the like on a cartridge shell exterior, on a module housing interior, on the cartridge shell exterior and on the module housing interior, and/or between the shell and the housing.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: May 8, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Gareth P. Taylor, Elmer Wayne Bouldin, Jr.
  • Patent number: 9943807
    Abstract: Disclosed is a spiral wound membrane element that provides two permeate streams through a permeate carrier sheet. The spiral wound membrane element is sealed such that the only communication with the permeate carrier is through a membrane sleeve. The first permeate stream flows spirally inward and the second permeate stream flows in the opposite direction, spirally outward. The permeate carrier sheet is sealed at two edges so that the permeate streams can only discharge from opposite, unsealed edges of the permeate carrier sheet. The first permeate stream may be collected in a central collection tube and the second permeate stream may be collected in a peripheral region of the membrane element.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: April 17, 2018
    Inventors: Chen Wang, Chang Wang
  • Patent number: 9926854
    Abstract: A spiral mist elimination system includes a container with an inlet and a layered assembly in fluid communication with the inlet. The layered assembly contains a spiral shape and is concentric with a central axis of the container. The layered assembly imparts centrifugal motion in the engine bleed air as the engine bleed air travels spirally inward. The first portion of the layered assembly receives the first set of droplets. The layered assembly also includes a mesh matrix that collects a second set of droplets. The second set of droplets impacts the mesh matrix and coalesces to form a third set of droplets. A perforated tube is disposed along the central axis of the container. The perforated tube collects the engine bleed air from the layered assembly. Gravity draws the first and third sets of droplets into a reservoir.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: March 27, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Haralambos Cordatos
  • Patent number: 9889407
    Abstract: A device, which is suitable for the processing of at least one fluid, is provided with at least one elongated foil, which is formed in a number of reciprocating foil layers. Between two opposite layers of foil, a spacer is situated that is permeable at least parallel to the foil layers. The foil layers and interposed spacers extend spirally around a central axis, wherein folding lines between two foil layers extend substantially parallel to the central axis. Each spacer is coupled to at least an end near the central axis with a support extending parallel to the central axis where, of the supports near the central axis, first supports are situated between two foil layers, which foil layers are connected to one another near the central axis, whereas second supports are situated between two successive first supports.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: February 13, 2018
    Assignee: AKA Patenten B.V.
    Inventors: Bert Johan Nelemans, Jochem Franciscus Edith Lahaije
  • Patent number: 9873088
    Abstract: Described are wrapped fluid treatment elements, comprising: a composite material; an interleaf; and an inner core; wherein the composite material and the interleaf form layers wrapped around the inner core. The composite material and interleaf may be wrapped in a spiral configuration around the inner core. The invention also relates to a method of separating a substance from a fluid, comprising the step of placing the fluid in contact with an inventive device or element, thereby adsorbing or absorbing the substance to the composite material contained therein.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: January 23, 2018
    Assignee: Natrix Separations Inc.
    Inventors: Dharmeshkumar M. Kanani, Navneet Sidhu, Bradley A. Kachuik, Charles H. Honeyman
  • Patent number: 9834471
    Abstract: A sealing agent for ion transport membranes (ITMs) includes a composition having a glass powder and a ceramic powder. The ceramic powder can include Ba0.5Sr0.5Co0.8Fe0.2O3?? (BSCF) or La2NiO4+? (LNO). The ceramic powder can be identical to the ceramic powder from which the ITM is made. The glass powder can include PYREX glass. The sealing agent can be in the form of a paste. The sealing agent can be used to attach an ion transport membrane to one or more support tubes. The sealing agent includes from about 10 wt. % to about 40 wt. % glass powder and from about 60 wt. % to about 90% wt. % (BSCF) ceramic powder.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: December 5, 2017
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Khaled Mezghani, Mohammed Abdel-Aziz Mostafa Habib, Amir Hamza
  • Patent number: 9795924
    Abstract: In one embodiment, the present invention provides a central core element for a reverse osmosis separator assembly, the central core element comprising a pair of central core element components, each of said core element components comprising at least one porous exhaust conduit and at least one friction coupling, the friction couplings being configured to join said core element components to form a central core element defining a cavity configured to accommodate a first portion of a membrane stack assembly; wherein each core element component comprises a first section defining an exhaust cavity and a second section comprising a porous exhaust conduit, wherein said porous exhaust conduit comprises a removable wall member configured to form a substantial portion of a porous exhaust conduit wall.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: October 24, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Jonathan Sebastian Janssen, Philip Paul Beauchamp, Todd Alan Anderson, Mohammed Mounir Mahmoud Shalaby, Wenpeng Liu, Anubhav Kumar
  • Patent number: 9636446
    Abstract: The present invention relates to a system, apparatus, and method for separating components of a fluid, e.g. blood, which eliminates the need for expensive hardware and produces a stabilized waste product. The system comprises an apparatus or device (V) for separating components of a fluid (15?) comprising a container (5?) having at least one separation or filtration member (10?) capable of selectively separating or filtering at least one component from the fluid, and a superabsorbent material (20?) capable of absorbing the at least one component separated from the fluid, and thereby providing a processed fluid free or substantially free of said at least one component; and agitation means.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: May 2, 2017
    Assignee: University of Strathclyde
    Inventor: Terence Gourlay
  • Patent number: 9604179
    Abstract: A spiral membrane element that can reduce the dimension increase in the length direction is provided. Also, a method for producing a spiral membrane element is provided having a step of forming a fiber reinforced resin layer having a reinforcing fiber layer and a strengthening fiber layer. The spiral membrane element is provided with a cylindrical wound body in which a separation membrane, a feed-side channel material, and a permeate-side channel material in a laminated state are wound in a spiral form around a center tube having a hole, and a sealing part for preventing feed-side fluid and permeate-side fluid from being mixed with each other, wherein a fiber reinforced resin layer having a reinforcing fiber layer and a strengthening fiber layer enclosed and buried with the same resin is provided on an outer circumferential side of the cylindrical wound body.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: March 28, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shinichi Chikura, Yuuji Nishida, Yasuhiro Uda
  • Patent number: 9597640
    Abstract: A spiral separation membrane element includes a water collection tube; a separation membrane wound around the water collection tube, having a feed-side surface and a permeate-side surface, and including a band-shaped region on at least one end of the feed-side surface in an axial direction of the water collection tube; and a channel material fused to the band-shaped region.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: March 21, 2017
    Assignee: Toray Industries, Inc.
    Inventors: Masakazu Koiwa, Kentaro Takagi, Hiroho Hirozawa, Yoshiki Okamoto, Masahiro Kimura
  • Patent number: 9522363
    Abstract: Membrane elements that use multiple membrane leaves may have a limited total active membrane area due to an increased diameter at the ends of the element. Membrane leaves may comprise a permeate carrier positioned between one or more membrane sheets. Adhesive may be used to seal one or more edges of the membrane leaf. The membrane sheets, permeate carrier and the adhesive contribute to the thickness of the edges of the membrane leaf and the diameter at the ends of the element. A reduced thickness of the edges of the permeate carrier may reduce the diameter at the ends of an element. Another permeate carrier sheet may also be used that is distanced from at least one edge of the membrane sheet so the permeate carrier sheet does not contribute towards the increased diameter at the ends of the element.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: December 20, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Prashant Vishwanath Shrikhande, Steven John Harrold, Cha Moua, Phillip Goebel, Yatin Tayalia, Prasanna Rao Dontula
  • Patent number: 9403130
    Abstract: A simple method of manufacturing a silica membrane which has high separation performance and high permeation flux is provided. The method is a method for manufacturing a silica membrane by depositing a silica sol on a porous substrate, drying the silica sol by air blowing which has a dew point of -70 to 0° C., and then firing the same thereafter to produce the silica membrane. Further, the silica sol is preferably dried by air blowing at an air velocity of 5 to 20 m/sec.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 2, 2016
    Assignee: NGK Insulators, Ltd.
    Inventors: Ryujiro Nagasaka, Tatsuya Hishiki, Ichiro Wada
  • Patent number: 9370751
    Abstract: A water-treatment separating membrane includes a polyamide active layer formed on999 a porous support. The ratio of a maximum value with respect to a minimum value of a ratio of a peak height of a C?O double bond of a carboxyl group (—COOH) with respect to a peak height of a C?O double bond combined with an amide group (—CONH—) is from 1.2 to 4, when measured after acid treating the polyamide active layer and by using a Fourier transform infrared spectrometer (FTIR).
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: June 21, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Young-Hoon Ko, Jae-Hong Kim, Chong-Kyu Shin, Phill Lee
  • Patent number: 9308476
    Abstract: A fluid filter device is described, where a flow attachment member provides a unique interface between the filtering element and a filter head. The fluid filter described herein generally provides a flow structure that is localized and sealed. The flow attachment member is configured to communicate fluid into and out of the fluid filter, and is configured to localize fluid flow both into and out of the fluid filter within a separating structure of the flow attachment member. The flow attachment member further includes a seal structure configured to substantially prevent or at least confine leakage to a localized area away from proximity of the edges of the housing. A composite filter head is described that has integrally molded inlet and outlet fittings.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: April 12, 2016
    Assignee: CUMMINS FILTRATION IP, INC.
    Inventors: Harold R. Martin, Rahul Kallurwar, James L. Eickhoff, Ismail C. Bagci, Jeffrey A. Husband, Aaron M. Wells, Kevin C. South
  • Patent number: 9283503
    Abstract: A filter element includes a media pack and a gasket member. The gasket member includes first and second gasket regions separated by a channel. One or more filter elements are usable in a dust collector. One example dust collector includes a collector housing having a dirty air inlet, a clean air outlet, and a tube sheet dividing the housing between an unfiltered air volume and a clean air volume. At least one filter element is removably mounted and sealed within the tube sheet. A gasket member secured to the element includes first and second gasket regions separated by a channel. At least one projection angled relative to a plane of the tube sheet extends into the channel of the gasket member.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: March 15, 2016
    Assignee: Donaldson Company, Inc.
    Inventors: Thomas D. Raether, Brian Zauner, Jim C. Rothman
  • Patent number: 9259691
    Abstract: A water-treatment separating membrane includes a polyamide active layer formed on a porous support. When the polyamide active layer is dyed using a 5% aqueous solution of Rhodamine B, at least a curve pattern formed by connecting two or more arcs is formed in at least a partial area of the polyamide active layer.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: February 16, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Young-Hoon Ko, Jae-Hong Kim, Chong-Kyu Shin, Phill Lee
  • Patent number: 9244021
    Abstract: A microwave imaging sensor is disclosed for continuously monitoring the condition and status of an in situ reverse osmosis membrane that forms a semi-permeable barrier between a region of water containing a dissolved salt and a region of water which is intended to be substantially free of the dissolved salt. A device according to embodiments of the invention can be used to monitor the condition of the membrane, i.e., the ability of the membrane to filter water by reverse osmosis; and to detect failures in the membrane such as leaking saline water into the output stream. The results of the monitoring can be used to determine in real time whether or not the membrane should be replaced.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: January 26, 2016
    Assignee: VAYYAR IMAGING LTD.
    Inventor: Raviv Melamed
  • Patent number: 9233525
    Abstract: The present invention provides a method and apparatus for fabricating a separator assembly. The method comprises: providing a central core element comprising at least one concentrate exhaust conduit and at least one permeate exhaust conduit; disposing a first portion of a membrane stack assembly comprising a permeate carrier layer, a membrane layer, and a feed carrier layer within the central core element such that the concentrate exhaust conduit and permeate exhaust conduit are separated by the first portion of the membrane stack assembly; radially winding a second portion of the membrane stack assembly around the central core element; and sealing the wound assembly comprising two opposing end surfaces made of the membrane stack assembly by applying an adhesive on both end surfaces of the wound assembly; and applying a negative pressure inside the central core element so that the adhesive penetrates into the membrane stack assembly.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: January 12, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Chen Wang, Todd Alan Anderson, Su Lu, Hua Li, Zhen Liu, Jie Huang, Anubhav Kumar
  • Patent number: 9211488
    Abstract: A fluid filter device is described, where a flow attachment member provides a unique interface between the filtering element and a filter head. The fluid filter described herein generally provides a flow structure that is localized and sealed. The flow attachment member is configured to communicate fluid into and out of the fluid filter, and is configured to localize fluid flow both into and out of the fluid filter within a separating structure of the flow attachment member. The flow attachment member further includes a seal structure configured to substantially prevent or at least confine leakage to a localized area away from proximity of the edges of the housing.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: December 15, 2015
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Kevin C. South, Ismail Bagci
  • Patent number: 9211509
    Abstract: To provide a reverse osmosis membrane where both salt rejection rate and water permeability required for wastewater treatment are achieved in a high level in spite of using the materials having excellent resistance to chemicals (resistance to alkali and to chlorine). A reverse osmosis membrane for wastewater treatment comprising a sulfonated poly(arylene ether sulfone) polymer containing a constituting component represented by the following formula [I], characterized in that, in a proton nuclear magnetic resonance spectrum where water molecules in the membrane are measured using the reverse osmosis membrane in a water-containing state, the relation between the chemical shift A (ppm) of spectral peak top derived from bound water and the chemical shift B (ppm) of spectral peak top derived from bulk water satisfies (B?0.36)?A<(B?0.30): wherein X is H or a univalent cationic species and n is an integer of 10 to 50.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: December 15, 2015
    Assignee: TOYOBO CO., LTD.
    Inventors: Masao Higashi, Junsuke Morita, Tooru Kitagawa
  • Patent number: 9050564
    Abstract: The invention relates to a filter module having one or more spirally wound flat filter elements comprising permeate outlet openings on one or two edges, a method for the production of the filter module, and a filtration system formed from one or more filter modules.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: June 9, 2015
    Assignee: MN Beteiligungs GmbH
    Inventors: Ulrich Meyer-Blumenroth, Reinhard Voigt
  • Publication number: 20150144547
    Abstract: A spiral flow water treatment apparatus including: a core collector comprising a first portion and a second portion; a spacer spirally wound around the core collector; a separator spirally wound around the core collector and alternately with the spacer; a first spiral flow conduit located outside the separator, connected with the first portion, and decreasing in volume thereof from far to close to the core collector; and a second spiral flow conduit located within the separator, in fluid communication with the first spiral flow conduit, and connected to the second portion.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventors: Chen WANG, Su LU, Hua LI, XueLian GONG
  • Publication number: 20150144559
    Abstract: A membrane separation device includes a separation membrane unit A that has a separation membrane unit component 8, feed stream side lines F1 and F2, and a permeate stream line P, and a unit for feeding a stream-to-be-treated, wherein a stream-to-be-treated sealing material is provided in the perimeter of an anti-telescoping plate of the separation membrane element, wherein the separation membrane elements can be moved within a cylindrical pressure vessel substantially in either direction, wherein the separation membrane unit is configured to feed the stream-to-be-treated through one of the feed stream side lines F1 and F2 and to discharge the concentrate stream through the other of the feed stream side lines, and wherein the separation membrane unit includes a mechanism that can switch the flow between the feed stream side lines.
    Type: Application
    Filed: May 21, 2013
    Publication date: May 28, 2015
    Inventors: Masahide Taniguchi, Kazunori Tomioka, Tomohiro Maeda
  • Patent number: 9023207
    Abstract: Disclosed is a spiral wound carbon membrane and preparation method thereof. The spiral wound carbon membrane is composed of one or more integral and windable membrane layers composed of a porous support and carbon materials containing fillers filled in the surface, pores and gaps thereof. The spiral wound carbon membrane has a developed ultramicropore porous structure with superior mechanical strength and toughness, and can be directly used to separate a gas mixture with different molecular sizes or liquid mixture.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: May 5, 2015
    Assignees: Dalian University of Technology, Yingkou Huarui Xiangsheng Chemical Technology Company Ltd.
    Inventors: Tonghua Wang, Lin Li
  • Publication number: 20150101987
    Abstract: A composite filter membrane cartridge, including a housing with a raw water inlet and a filtered water outlet is disclosed. The housing may be equipped with one or more filter layers, including a prefilter assembly and a second filter portion, wherein the prefilter is connected to the membrane filer either via a water line or by direct stacking. The prefilter assembly may include multiple layers comprising a carbon filter and polypropylene cotton filter, wherein the locations of the filters are interchangeable. The prefilter may include granular activated carbon situated between two portions of polypropylene cotton filter cloth. The perimeter of the activated carbon filter and polypropylene cotton filter may be substantially sealed around the inner wall of the housing providing a snug fit. The second filter portion of the composite filter membrane cartridge may include nanomembrane spiral wound filter.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 16, 2015
    Inventors: Edward Yeh, Joseph Wang, Yongming Zhang
  • Publication number: 20150096930
    Abstract: The present invention relates to a separation membrane module in which a plurality of spiral-type separation membrane elements for use in separating and removing ingredients present in a fluid to be treated are loaded. The present invention provides a separation membrane module in which a plurality of spiral-type separation membrane elements are loaded in a cylindrical pressure-resistant vessel and which allows easy loading and removal of the separation membrane elements while maintaining sealing property even when high-hardness foreign particles are present on sealing surfaces and fully achieving its performance, thereby ensuring reductions in maintenance time and labor, and provides a replacement method for such separation membrane elements.
    Type: Application
    Filed: February 25, 2013
    Publication date: April 9, 2015
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Masahide Taniguchi, 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
  • Publication number: 20150060359
    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: Application
    Filed: April 18, 2012
    Publication date: March 5, 2015
    Inventors: Chang Wang, Chen Wang
  • 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: 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: 8940168
    Abstract: The present disclosure describes an axial bypass sleeve for use with a spiral wound membrane element. The axial bypass sleeve has a protrusion and an opening that defines a flow path to provide fluid flow communication through the axial bypass sleeve. In use, the axial bypass sleeve is wrapped around a spiral wound membrane element and both are placed in a pressure housing. A pressurized feedstock is introduced into the pressure housing. A portion of the pressurized feedstock flows through the spiral wound membrane element to produce a permeate stream and a retentate stream. A portion of the pressurized feed stock flows around the spiral wound membrane element, called bypass flow. The protrusion extends into the annular space to restrict the bypass flow. A portion of the bypass flow passes through the opening and enters into the spiral wound membrane element to increase permeate production.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: January 27, 2015
    Assignee: General Electric Company
    Inventor: Dean David Marschke
  • Patent number: 8940171
    Abstract: A system for treating wastewater including at least one water-treatment pathway having at least one wastewater inlet, at least one oxygen-permeable, water-impermeable wall, separating an interior of the pathway from outside air, and at least one treated wastewater outlet and arranged for at least aerobic treatment of the wastewater as it flows from the at least one wastewater inlet to the at least one treated wastewater outlet, at least one wastewater supply conduit, supplying the wastewater to the at least one wastewater inlet of the water-treatment pathway and at least one treated wastewater conduit, supplying treated wastewater from the at least one treated wastewater outlet of the at least one water-treatment pathway.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: January 27, 2015
    Assignee: Emefcy Limited
    Inventors: Ronen Itzhak Shechter, Lior Eshed, Eytan Baruch Levy, Tamar Ashlagi Amiri
  • Patent number: 8940176
    Abstract: A method of extracting a liquid phase from a suspension, the method comprising: injecting said suspension into a duct presenting a first section that is straight and a second section that is curved; and at the outlet from said curved section of the duct, extracting a liquid-enriched fraction of said suspension that is spatially separated from a particle-enriched fraction of the suspension; the method being characterized in that the injection flow rate of the suspension and the geometry of the duct are selected in such a manner that: in the straight section, lift forces cause particles to be superconcentrated in a ring around the longitudinal axis of the duct; and in the curved section, Dean secondary flows deform said ring and give rise to spatial separation between said liquid-enriched fraction and said particle-enriched fraction. A device for implementing such a method.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: January 27, 2015
    Assignee: Commissariat a l'Energie Atomique Centre National de la Recherche Scientifique
    Inventors: Jean Luc Achard, Elodie Sollier, Hervé Rostaing
  • 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
  • Publication number: 20150014232
    Abstract: The invention relates to membrane modules and applications therefor. In particular, the invention relates to the construction of membrane modules for use in forward osmosis, heat exchange, and distillation processes.
    Type: Application
    Filed: August 8, 2012
    Publication date: January 15, 2015
    Applicant: OASYS WATER, INC.
    Inventors: Robert L. McGinnis, Aaron Mandell, Richard Stover
  • 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: 20140299533
    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: Application
    Filed: June 18, 2014
    Publication date: October 9, 2014
    Inventors: Curtis J. Elwell, Frederick K. Lesan, Victor Verbeek, Peter F. Metcalfe
  • Publication number: 20140263061
    Abstract: New, improved, or modified membrane contactors, modules, systems, and/or methods for membrane distillation and/or ammonia removal, and/or methods of manufacture, use, and/or the like. In accordance with at least selected embodiments, particular possibly preferred membrane contactors, modules, systems, and/or methods for membrane distillation and/or ammonia removal, and/or to particular possibly preferred membrane contactors, modules, systems, and/or methods for membrane distillation and/or ammonia removal, involving membrane contactors adapted for membrane distillation, for ammonia removal, or for both membrane distillation and for ammonia removal, as well as for other membrane contactor systems, methods or processes such as degassing, gasifying, separation, filtration, and/or the like.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Celgard, LLC
    Inventors: Gareth P. Taylor, Amitava Sengupta
  • 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
  • Publication number: 20140231331
    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: Application
    Filed: April 10, 2014
    Publication date: August 21, 2014
    Applicant: SPF INNOVATIONS, LLC
    Inventors: Gaston de los Reyes, Leon Mir
  • Publication number: 20140231332
    Abstract: A separation membrane includes a separation membrane sheet at least including a substrate and a separation functional layer, and a flow path member having a composition different from the separation membrane sheet and directly secured to the substrate by an adhesive force of at least 1 N/m on side opposite in thickness direction to the separation functional layer.
    Type: Application
    Filed: September 28, 2012
    Publication date: August 21, 2014
    Inventors: Hiroho Hirozawa, Masakazu Koiwa, Kentaro Takagi, Yoshiki Okamoto, Hiroyuki Yamada, Tsuyoshi Hamada, Katsufumi Oto, Masahiro Kimura
  • 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: 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