Abstract: Methods and devices for providing dialysis treatment are provided. The device includes a resin bed including zirconium phosphate, zirconium oxide, and urease.

Abstract: A filter assembly for a seawall filters the flow of groundwater through a hole in the wall. The filter assembly includes: (a) a housing containing a flat flange and a perforated conical shell, the shell adapted to extend into the hole with its apex extending toward the landward side, the flange having a seaward side adapted to fit flushly against the seawall, the flange having a landward side connected to the shell, the flange having an opening that defines an open base for the shell; (b) a perforated conical cage having an open base that fits within the shell of the housing; (c) a conical filter element having an open base that fits within the cage; (d) a perforated conical sleeve having an open base that fits within the filter element; and (e) a perforated cap that is removably and flushly fastened to the opening in the flange to secure the cage, filter element, and sleeve within the shell of the housing.

Abstract: The present invention includes a harvesting and irrigation device, a method and a kit for the collection of viable fat cells and/or adipose tissue with decreased handing and improved yield and viability.

Abstract: Disclosed is a method and a filter unit for depleting or enriching a liquid or gas with substance(s) comprising i) providing a filter unit comprising at least one convective layer and at least one receiving layer adjacent one another, ii) passing the liquid or gas through the filter so that the main direction of flow is along the layers and the main flow of liquid gas is in the convective layer, allowing the substance(s) to: a) be transferred from a convective layer to a receiving layer, and b) be retained or otherwise modified or transferred within a receiving layer, or c) be provided by the receiving layer, and d) be transferred from the receiving layer to the fluid in the convective layer.

Abstract: A water purifier includes a base, an outer casing mounted on the base, a fresh water conduit demountably mounted in the outer casing, a plurality of filtering units demountably mounted on the fresh water conduit and a cover demountably mounted on the outer casing. Each filtering unit includes a membrane bag and multiple supporting members. The membrane bags are sandwiched by the supporting members and are arranged in a cascading manner. Gaps are formed between each pair of adjacent membrane bags so that the filtering bags can be cleaned directly.

Abstract: A modular curb inlet filter apparatus having an internal axial tube member on which are disposed at least two disc spacers, which in turn support a cylindrical mesh frame member, which in turn supports a tubular filter fabric. Wedge anchors composed preferably of a compressible polymer foam are provided with anchor bores of sufficient diameter to receive the ends of the cylindrical mesh frame member therein, the anchor bores being disposed near the base of the wedge anchors such that the curb inlet filter inlet apparatus will be seated close to surface of the curb inlet base when positioned within the curb inlet. Preferably the wedge anchors are provided with a base scuff plate made of a durable polymer material to prolong their use life. A short silt flap or skirt depends from the filter fabric, the silt flap extending the approximately the length of the curb inlet filter apparatus to seal any gap beneath the curb inlet filter apparatus and the base of the curb inlet.

Abstract: An elongated film optionally having double-sided adhesive tapes adhered to both ends can be used to wrap a paper core and thereafter covered with a curable resin that is then cured to form a filter, especially a water filter, having a hardened canister about the paper core. The resulting filter is characterized by outstanding lack of visual imperfection.

Abstract: A membrane assembly is provided that includes a support comprising a micro-porous material; and an insoluble layer secured to a surface of the support. The insoluble layer is a reaction product of a reactant solution comprising a chain-capping reagent. A system and associated method are provided also.

Abstract: A filter element that has at least two, planar, non-curved filtration panels. In a preferred embodiment, the filter element has three panels, providing a generally triangular filter element. The outlet aperture, from the filter element, generally follows the configuration of the filter. That is, a filter element having three filtration panels will have a generally three-sided outlet aperture. The outlet aperture preferably is not a true polygon, but rather, includes rounded or curved sides and/or corners. The filter element includes an outlet sealing configuration that may provide both axial and radial sealing to outlet ductwork.

Abstract: A cylindrical shaped pleated media includes adhesive beads arranged on a periphery to bridge pleats and provide structural support for the pleated media. The pleated media is used in a fluid filter.

Abstract: A filter element includes a filter cylinder whose outer side rests against a fluid-permeable supporting tube (15). The inside (3) of the filter cylinder can be flown through by the fluid to be filtered. The filter cylinder is formed by a filter mat web. The filter mat web has a series of folds (9) that rest against one another at least in areas. Both ends of the filter mat web are joined to one another at a junction (5) to form an annular body (1). The filter element includes a device that acts upon the junction (5) to prevent, in the area of the junction (5), a bulging of the folds (9) caused by the flow of the fluid.

Abstract: The invention relates to a porous monolith support (50) for a filtration element, having a tubular shape and an essentially-constant cross-section along the axis thereof (X-X). The inventive support comprises a plurality of channels (62, 64), the surfaces of which are intended to be covered with filtration membranes. According to the invention, the cross-sections of the channels are distributed inside the cross-section of the support and said channels (62, 64) are only separated from the periphery of the support by a single lateral wall (56) of the support. Moreover, all of the channels of the support are distributed as follows: in a first group of oblong radial channels (62) which are disposed such that the length thereof extends in an essentially-radial manner, and in a second group of oblong lateral channels (64) which are positioned between the radial channels (62) and which are disposed such that the length thereof extends essentially parallel to the periphery of the support.

Abstract: An erosion control system and method wherein a fabric filter bag is embedded with and/or filled with a flocculating polymer and is positioned on a sloping soil surface to dam and pond water flowing thereacross for settling of the particles in the water, and as the ponding water seeps into the bag the colloidal particles will be filtered or agglomerated for settling. The water then passes through and out of the bag and is further subjected to agglomeration and filtering by a skirt of filter material also impregnated with flocculating polymer, said skirt being anchored to the bag or stacked to maintain the position adjacent and downslope from the bag.

Abstract: A filter, in particular for the separation of leucocytes from further blood components, has an outer sheath, at least one intermediate layer which is a component of a frame or which forms a frame, an inlet chamber which is in communication with an inlet for the medium to be filtered, an outlet chamber which is in communication with an outlet for the filtrate, and a filter material which separates the inlet chamber from the outlet chamber. The filter is particularly low in dead space and can be centrifuged in a simple manner since the filter material is encompassed between the outer sheath and the intermediate layer.

Abstract: A rigid filter for capsules suitable for extracting beverages, comprising a flat body having a plurality of through filtering holes, which are sized so as to block the passage of solid particles and allow passage of brewed water or beverage, wherein the holes have a substantially symmetrical shape with respect to the middle plane of the flat body, so that the filter can be inserted into a capsule without taking care of the orientation of such holes with respect to the powdered substance within the capsule.

Abstract: The present invention relates to a fuel filter component containing a heating device for heating a fluid; a detection device for detecting a level of a further fluid, located in a reservoir; and an outlet conduit for the further fluid. The component is a one-piece component, in particular the heating device, detection device, and outlet conduit are embodied. The present invention further relates to a fluid filter, in particular a fuel filter, having such a component.

Abstract: A filtration system comprising a floor panel and a plurality of wall panels connected to each other to define a box, at least one filtering wall vertically inclined and supported inward of a corresponding wall panel such as to define a first free space therebetween, a filtering floor horizontally inclined and supported above the floor panel such as to define a second free space therebetween, the filtering floor being connected to the filtering wall to define a filter chamber, a plurality of openings defined in the filtering wall and the filtering floor sized to let a liquid pass through and retain at least one target solid within the filter chamber, an inlet in fluid communication with the filter chamber, and an outlet in fluid communication with the first and second free spaces. A method of filtering at least one target solid from a liquid is also provided.

Abstract: A sludge filter is comprised of a mesh filter media secured to a support net. The support net includes a front surface adjacent the filter media and a rear surface opposite the filter media, the rear surface having a plurality of outwardly extending nodes to define flow channels for horizontal and vertical fluid flow intermediate the net and a container surface. The sludge filter is attached directly to the walls or floor of a container. In a preferred embodiment a border of the sludge filter comprises one part of a two-part fastener system with a second part of the two-part fastener system attached to a container along the perimeter of the filter coverage area, so that the filter medium may be removably attached to the container.

Abstract: A filter cartridge for use in gravity-fed water treatment systems wherein filter elements include a dome-shaped hydrophilic porous particulate carbon powder block filter in a polymeric binder. The filter has a closed upper end and an open lower end with sidewalls extending there between, additional filter media and includes ion exchange resins and a fine mesh hydrophilic filter sheet to reduce contaminant content of water for drinking purposes.

Abstract: A filter cartridge which comprises a filter pack (3) formed by a flat filtering medium, a tubular sheath (2) with a perforated wall, surrounding the filtering pack, and two respective end caps (5) having a first disc (16) and a second disc (17) placed one on top of the other, each made from thermoplastic, with a portion of the filtering pack (3) situated along one of its edges and a portion of the sheath (2) situated along one of its edges (33) which are embedded in the second disc (17), with the first disc (16) having a peripheral rim (19) which surrounds the relevant portion of the sheath (2) and with the sheath having a shoulder (34) opposite the edge of the rim (19) of the first disc (16).

Abstract: A pool filter cleaning device comprising a containment chamber having a upper end, a lower end, and a circumferential sidewall. The sidewall has a water deflecting portion adjacent the upper end and the containment chamber is adapted to receive a dirty pool filter. A contaminant trap is provided that is releasably secured to the sidewall for capturing contaminants of the pool filter when the filter is sprayed with water. The contaminant trap can be removed from the sidewall for disposal into a trash receptacle. The cleaning device can be configured to have a expanded and collapsed configuration for easy transportation or storage.

Abstract: Tangential flow filtration device is provided wherein liners are provided between the filtration element and the top and bottom holders or manifolds. The liners incorporate the flow channels and inlet and outlet ports that were previously present in the manifolds. The liners are made of an inexpensive material and therefore are disposable after a single use, making it more cost effective to dispose of them than to clean the conventional manifolds. In addition, the liners can be pre-sterilized.

Abstract: A screen mounting basket for a vibratory separator for separating components of material introduced into the basket, the vibratory separator including a collection receptacle beneath the basket, the basket including two opposed spaced-apart side walls having first ends and second ends, the first ends spaced-apart by spaced-apart end walls connected to each of the side walls, a basket bottom between the two spaced-apart side walls, at least one screen assembly positioned vertically in the basket for interceptions material introduced into the basket and for screening said material, and the at least one screen assembly extending from one side wall of the basket to the other.

Abstract: A filter device, in particular, for high-pressure applications in a molten polymer filtration, has a screw-in piece (10), provided with a first threaded section (12) for fixing the filter device, and a second threaded section (14) for fixing a filter medium (16), in particular, in the form of a metal wool and with a perforated support tube (18) for the metal wool. The other free end of the filter device is provided with a volume displacer (24). The metal wool is surrounded by a support grid (20) and fixed by two fixing pieces (28, 30), held at a separation from each other by the support grid (20). One fixing piece (28) is fixed to the second threaded section (14) of the screw-in piece (10). The other fixing piece forms a handle (30) for the fixing formed.

Abstract: Systems and methods to filter water. A filtration device for a floodable compartment having a water inlet and a water outlet can include a removable filter for being positioned at or near the water outlet of the compartment, a strainer having a first end and a second end, wherein the first end is configured to at least partially surround the filter near the water outlet, and wherein the second end is configured to contact the compartment at least partially around the filter at a point in the compartment between the water inlet and the water outlet. The filtration device can be implemented as a water filtration system for a pool or spa, where the water inlet can be from the pool or spa, and the water outlet can be to a pump.

Abstract: A colloid comprises a sulfone polymer. The colloid may be used as a replacement for activated carbon or charcoal in water purification systems. Unlike activated carbon, the colloid is advantageously regenerated chemically and reused.

Abstract: A filter assembly through which a fluid can flow and a method for the production thereof are provided. The filter assembly includes at least one covering layer made of an at least partially porous material with at least one boundary region and includes at least one fiber layer made of a fiber fabric. The at least one covering layer forms a sleeve that encloses the fiber layer so that the fiber layer is permanently disposed inside the at least one covering layer. The filter assembly makes it possible to produce a filter body that can be used, in particular, for cleaning exhaust gases of mobile internal combustion engines.

Abstract: A water tank filter having a double structure including an inner filter having a small pore size for trapping fine particles of filth from tank water and situated within a hollow outer filter having a large pore size for trapping coarse particles of filth. The inner filter is situated in roughly the upper half of the internal space of the outer filter. Disclosed also is a water tank purifier including the water tank filter. The water tank filter and purifier can effectively remove both coarse and fine particles of filth from a water tank. The filter does not quickly get clogged, and is easy to handle.

Abstract: The present invention relates to a filter device for removing impurities contained in liquid. A filter housing 18 is provided with a container for accommodating a filter bag 2 therein, a deposit recovery tank 3 for recovering a deposit and a floating material recovery tank 4 for recovering a floating material. Thus, it is possible to prevent any deterioration of filtration performance caused by filtered and separated impurities, and to achieve both of filtration and specific gravity difference separation by a single device.

Abstract: An improved spa vacuum for removing debris from the bottom of a spa or hot tub includes a removable lower assembly which includes a filter assembly. The filter assembly includes a filter housing having three stacked filter elements. The spa vacuum also has a removable nozzle having rounded side edges. A compression fitting connects a telescoping pole to an upper chamber cap of a debris chamber. The telescoping pole may be removed from the debris chamber if damaged or for purposes of packaging and shipping.

Abstract: A filter element for hydrocarbon emissions in, e.g., marine diesel engine applications, comprises a wound mat received within a filter bag. An annular end cap is bonded to one end of the wound mat, and is sealed around its periphery to a bag ring at the open end of the bag. The bag ring is then received and retained in a seat ring in the housing. The exhaust gas stream from the engine is directed through an opening in the end cap and through the wound mat and bag for removal of hydrocarbons and contaminants.

Abstract: The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters.

Abstract: A fuel filter device includes a first member made of a plastic and having a connecting portion to be connected to a fuel intake port, and a second member made of a plastic and assembled with the first member for forming an interior space communicating with the connecting portion. One or both of the first member and the second member are provided with a fuel intake portion, and a filter member having a single layer structure or a multi-layer structure in a sheet shape or a mat shape is disposed between the first member and the second member to cover the inflow portion from a side of the interior space. Accordingly, the filter device can be easily and adequately produced.

Abstract: A fluid filter element (10) comprises a pleated filter media (34) having spaced apart pleats (40) and an external filter media surface (38) comprising the external peaks of the pleats (40) and a flexible foam filter media sleeve (42) in contact with and extending between the pleats of the peaks of the external filter media surface (38). The filter media sleeve (42) maintains the spacing between the external peaks of the pleats (40) of the pleated filter media (34). The pleated filter media (34) is for fluid applications and includes fragile material media layers (74, 76) between wire meshes (70, 80).

Abstract: A filter for a spa or pool, having a filter body which receives a filter bag having a sheath encompassing the exterior of the filter body and a pocket extending inwardly from the front end of the sheath into the filter. Operation of the spa water circulation system draws spa water into the filter bag pocket while concurrently spa water is drawn transversely through the filter bag sheath and auxiliary spa water openings into the filter body. An O-ring encircles the upper portion of the filter bag to releasably retain such bag to the filter body during operation of the spa water circulation system.

Abstract: An apparatus for separating liquid from a slurry comprised of a solid and a liquid is described. The apparatus comprises a container sized and configured to receive the slurry which container comprises a removable cover sized and configured to enclose an atmosphere within the container when the cover is attached to the container, a filter disposed within the container for separating the liquid from the slurry, and a vacuum pump in fluid communication with the enclosed atmosphere of the container which pump is configured to create a vacuum within the container that causes the liquid to move through the filter, which pump is configured to vacuum material comprised of solid material, liquid material, gas or a combination of two or more of the foregoing. Related methods of separating liquid from the slurry using the apparatus of the invention are also described.

Abstract: A pleated filter cartridge for filtering liquids including an annular filter element having a filter material which is a thin non-perforated non-woven material of flash-spun plexifilamentary high-density polyethylene fibrils, the filter material having a pressure drop of less than 4 psid at a flow rate of 10 gal/hr and a filtration efficiency of at least 98% of 1–2 micron particulates at a pressure differential of 30 psid. The filter material preferably has a mean flow pore size greater than 4 microns while its normal pore-size filtration rating is 1 micron, and preferably has a thickness of less than about 0.15 mm, most preferably less than or equal to about 0.13 mm. The filter element preferably has two layers, including a mesh layer, preferably of a low-density polyethylene.

Abstract: A filter for a spa or pool, having a filter body which receives a filter bag having a sheath encompassing the exterior of the filter body and a pocket extending inwardly from the front end of the sheath into the filter. Operation of the spa water circulation system draws spa water into the filter bag pocket while concurrently spa water is drawn transversely through the filter bag sheath and auxiliary spa water openings into the filter body. An O-ring encircles the upper portion of the filter bag to releasably retain such bag to the filter body during operation of the spa water circulation system.

Abstract: A fluid filter includes a cylindrical pleated filter media disposed around a central perforated support core or self-supporting. An outer support sleeve comprising a extruded nylon, diamond-shaped mesh is stretched across the pleated media, and elastically conforms to the pleat peaks to structurally retain the pleats of the pleat peaks in fixed relation to one another. A bead of adhesive is then applied over the sleeve to fix the sleeve to the pleat peaks. End caps are disposed at opposite ends of the fluid filter.

Abstract: A filter cartridge for filtering impurities and the like from a swimming pool or other body of water is provided. The filter cartridge is positioned in a receptacle for receiving water and for recirculating it back to the pool. The filter cartridge includes a core communicating with the recirculating system and having a plurality of openings therein communicating with a supporting frame located around the core and affixed thereto. The frame has a multiplicity of openings therein and a plurality of undulations extending therealong. A flexible sleeve is located around the frame and is of sufficient size to assume the contour of the frame when water is supplied from the exterior of the sleeve to the interior of the core, thereby providing a maximum filtering surface. The sleeve has elastic bands around both ends for drawing the ends together around the core beyond the ends of the frame. The sleeve can be easily removed for cleaning or replacement.

Abstract: A filtration cartridge, for purifying biologically contaminated liquids, comprised of a framework having a plurality of voids and abundant surface area extensions and forming a cavity(s) for insertion of filtration materials. The cartridge framework is permanent and its surface area provides colonization sites for the propagation of water purifying microorganisms responsible for biological filtration. The cavity(s) accepts filter media that add additional functions such as mechanical and/or chemical filtration or other media that enrich or modify the chemical composition of the liquid being treated.

Abstract: A bacteriostatic filter cartridge having a porous core member about which is layered a yarn and/or a polyester membrane and/or melt blown web of polypropylene and/or a trilaminate polypropylene membrane, any or all of which may be impregnated with an antimicrobial agent. The filter cartridge is sized so as to fit tightly into a cartridge housing of a fluid filtration system. Fluid passing through the cartridge housing will be filtered by the filter cartridge to remove contaminants from the water and which prevents the growth of bacterial and other microorganisms on the filter media.

Abstract: A filter for use in a waste water discharge system including a first channel defining a receptacle for a filter and a second channel connected generally orthogonally to the first channel providing an outlet from the filter receptacle. The filter has an axial support of a pre-selected length, a plurality of bristles fixed to the axial support extending radially outward to define an outer margin. The outer margin of the bristles, at some portions along the pre-selected length, are at least equal to an inside dimension of the channel defining the receptacle. A handle is fixed to the axial support facilitating the placement and withdrawal of the filter element in the filter receptacle. A shield member is provided that is generally conformable to the inside surface of the filter receptacle. The shield member has a length dimension sufficient to cover the outlet leading to the second channel for blocking any flow of waste water into the second channel during replacement of the filter element.

Abstract: An expandable well screen has a desirable thin-wall construction together with a simplified fabrication method. In fabricating the screen, a flexible sheet of metal mesh filter media is diffusion bonded to an inner side of a perforated metal sheet which is then deformed to a tubular shape to form a filter structure having an outer perforated tubular shroud interiorly lined with the filter media. The tubular filter structure is telescoped onto a perforated base pipe and has its opposite ends sealingly secured thereto to complete the expandable well screen.

Abstract: A filtering system for a spa or pool that includes a closed filtering tank which houses a filter having a filter body which receives a filter bag having a sheath encompassing the exterior of the filter body and a pocket extending inwardly from the front end of the sheath into the filter. An O-ring encircles the upper portion of the filter bag to releasably retain such bag to the filter body during operation of the spa water circulation system. A pump is provided to force water from the spa or pool into the filtering tank, through the filter body and back into the spa or pool.

Abstract: A self contained filter for a recirculating tank is used in a septic system. The self contained filter is a mattress-like filter made of woven material encapsulating aggregate material therein. The weave of the mattress-like woven material is smaller than the aggregate material. In another aspect, at least one mattress-like filter is placed within a tank.

Abstract: A medical filter (11) is constructed as a container with an interior volume in open fluid communication with a patient connection element (31) and a transport connection element (39). Filter support structure (13) mounted within the interior is structured as a thin, perforated member (14) carrying hydrophilic filter medium (17). A first flow path directs spent dialysate from the patient across the surface of the filter medium (17) to the transport connection (39). A second flow path directs fresh dialyalysate from the transport connection (39) through the filter medium (17) and the perforated support structure (13) to the patient connection (31).

Abstract: Reduced attrition of catalyst and extended operation of heterogenous catalyzed slurry reactions in draught tube reactors is facilitated by locating vertically oriented filter media within the draught tube reactor annular space to provide a product outlet stream substantially free of catalyst.

Abstract: The present invention provides for a multiple well filter plate and method of producing same, the multiple well filter plate comprising a molded plate and a filter sealed via an adhesive, the method particularly adapted for producing multiple well filter plate having substantial well densities and small volume sample wells.

Abstract: The present invention discloses a personal water purification system providing a watertight polymeric container 12 having a removable, threaded unfiltered water fill cap 18 that provides access through port 28 to an upper unfiltered water receiving chamber 20. At the lowest integral portion 24 of the receiving chamber 20, a threaded port 30 is provided for the attachment of a disposable filter cartridge 26 that is vertically threaded into the port 30. This allows for gravity induced filtering through cartridge 26 as opposed to pressure induced filtering. A plurality of filtered water ports 32 are also located in the lower integral portion of the unfiltered water chamber 20, one or more opposite the other and/or juxtapositioned, which allow filtered water to be dispensed from the lower filtered water chamber 16 to a drinking spout 22 provided at the top most portion of the container and to flow by gravity through a plurality of channels/conduits 34 when the container is tipped to its side.