Abstract: A corrugated membrane plate and frame module for use in fluid treatment applications is disclosed, where the corrugated design increases production capacity of a module by more than 200% as compared to conventional modules. The increase is achieved by tripling the membrane packing density per module using an optimized corrugated design. The disclosed corrugated membrane plate and frame also reduces the inactive membrane area per module, which is caused by deactivation of membranes edges attached to the plate and frame core in order to prevent leakage.

Abstract: The present application includes a system and method that introduces a rather new and unique approach to desalinating or recovering energy from hyper saline waters. The system includes a flat sheet membrane panel assembly including a plurality of membranes laid flat. A plurality of end caps are coupled to the plurality of membranes on opposing ends. A frame is configured to house the plurality of membranes and the plurality of end caps. The frame includes a top and bottom header to secure the membranes and permit the passage of fluid away from the membranes. The method includes subjecting a flat sheet membrane to pressurized untreated fluid. The fluid passes through a porous portion of a frame and is filtered by one or more flat sheet membranes. The treated fluid is collected and the brine is discharged. Pressure of the fluid is regulated to maintain consistent levels.

Abstract: The present invention relates to portable filtration units including filter components mated with retentate and permeate flow channels wherein particle containing solutions are introduced into the portable filtration units and contacted with the filter components for filtration thereby producing a retentate outflow and a permeate outflow for capture of desired end product.

Abstract: A spiral reverse osmosis membrane element that improves impregnation property of a sealing resin at edges of a membrane leaf and can effectively prevent micro-leaks. The spiral reverse osmosis membrane element comprises a cylindrically wound body comprising a perforated core tube and, spirally wound therearound, a separation membrane, a feed-side passage material and a permeation-side passage material in a laminated state, and a sealing portion for preventing a feed-side liquid and a permeation-side liquid from being mixed together, wherein the separation membrane facing the permeation-side passage material has a structure that a porous support and a skin layer are successively laminated on a non-woven fabric layer, and the sealing portion sealed with a sealing resin is provided at the edges of the separation membrane, wherein the separation membrane is impregnated with the sealing resin at least up to the vicinity of the skin layer through the porous support.

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.

Abstract: The invention relates to a device for the equilibrium dialysis of fluids having small volumes. The object of the invention of creating a device for equilibrium dialysis , the device being designed as a simple as possible, being universally usable and reliable in the use thereof, with which a large ratio of the membrane surface to the sample volume is created and which facilitates very short diffusion paths inside the sample as well as low sample losses, even with small sample volumes, is achieved in that a device is proposed, which comprises corresponding capillaries (1, 1?), which are connected through a membrane (2) and each are open at the ends on both sides, said capillaries for dialysis purposes each comprising a preferably substantially U-shaped arched capillary portion, and the at least one opening (4, 4?) thereof being provided each with a sealing element for introducing and/or removing the liquid.

Abstract: According to one aspect of the present invention, a dual stage filtration apparatus includes a cartridge having a first end and an opposing second end and a first filtration stage including a first bundle of first semi-permeable filtering elements and a second filtration stage including a second bundle of second semi-permeable filtering elements. The cartridge has a fluid inlet port for receiving raw unfiltered fluid into the first filtration stage and a fluid outlet port for discharging purified fluid after it has passed through the first and second filtration stages. The apparatus has an intrastage space that receives fluid that has been filtered in the first filtration stage prior to being filtered again in the second filtration stage, and the fluid inlet port is in fluid communication only with the first filtration stage, while the fluid outlet port is in fluid communication only with the second filtration stage.

Abstract: A membrane separation module (10) has a shell (11) having inlet port (20), outlet port (21) and a plurality of membrane units (12) disposed therebetween. Each membrane unit (12) has a plurality of elongated membrane elements (13), with at least a portion of each membrane element (13) having a semipermeable surface to permit selective permeation of one or more components of a multi-component feed fluid. The plurality of elongated membrane elements (13) are attached to collecting manifolds (16) (17), with one of those manifolds (16) (17) being unrestrained, permitting axial movement of each membrane element (13) in response to temperature changes. At least one manifold (16) (17) from each membrane unit (12) is in fluid communication with a manifold (16) (17) from one other membrane unit (12).

Abstract: A method for manufacturing a filter device having filter means, in particular hollow-fibre membranes, arranged in more than one filtration compartment within a filter housing. For example a dialysis type filtration process such as haemofiltration or haemodiafiltration or haemodialysis may be carried out at the same time as an ultrafiltration process or as another haemofiltration, haemodiafiltration or haemodialysis process. A split shell is bonded or welded together along longitudinal seams. Internal separating walls within the housing are formed integrally with the shell portions of the housing to form adjacent filtration compartments when the housing portions are joined together.

Abstract: A domestic nanofiltration membrane based water purifier without a storage tank. The water purifier according to the present invention uses a nanofiltration membrane filter as a main filtering section and does not have a storage tank for containment of purified water. Although conventional reverse osmosis membrane based water purification systems provide good quality water, they have problems in that installation of the storage tanks due to insufficient flow rate results in the increased volumes of water purifiers, and at the same time, secondary pollution may be caused by microorganism propagation upon prolonged storage. In this regard, the present invention provides a domestic nanofiltration membrane based water purifier without a storage tank, in which a nanofiltration membrane filter with a pore size of approximately 0.1 to 10 nm is used as a main filtering section.

Abstract: A filter device having filter means, in particular hollow fiber membranes, arranged in more than one filtration compartment within a filter housing. The filter device thereby allows more than one filtration process to be carried out serially and/or simultaneously within a single housing. For example a dialysis type filtration process such as hemofiltration or hemodiafiltration or hemodialysis may be carried out at the same time as an ultrafiltration process or as another hemofiltration, hemodiafiltration or hemodialysis process. The device may haves a split shell construction bonded or welded together along longitudinal seams. Internal separating walls within the housing are formed integrally with the shell portions of the housing to form adjacent filtration compartments when the housing portions are joined together.

Abstract: The filtering membranes of the present invention are made from a pair of polymer films stretched in a liquid surface-active medium for the formation of crazes filled with the aforementioned medium. The crazed films are perforated and then stack together in a stretched or released state and are welded together into a sealed structure with a plurality of parallel welding seams arranged, e.g., in mutually perpendicular directions, so that a plurality of sealed cells is formed. The cells have on one side of the membrane input openings and on the other side output openings. If an input opening is in one cell, then an output opening is in the adjacent cell. Adjacent cells are interconnected only through the welding seams. Welding can be carried out by contact heating or with the use of a laser beam, or the like. The material of the welding seam has an amorphous structure.

Abstract: (1) Monolithic ceramic filter having a portion of the partition wall of a honeycomb structure exposed with its end face on an outer wall surface 13 of the structure and increased in thickness as compared to the remaining portion of the partition wall to form a flow resistance relaxing portion 12.

Abstract: A method and apparatus for purifying an aqueous suspension comprising feeding an aqueous suspension containing fine particles comprising an inorganic component from the outer surface of a wavy hollow fiber membrane having an outer diameter of from 0.5 to 3.1 mm to filter, followed by physical wash of the hollow fiber membrane. The purifying method can reduce the damage of the membrane outer surface during the physical wash step, prevent open pores on the surface from covering and achieve stable filtration. The hollow fiber membrane bundle can be produced by having a pulsation flow contacted with the hollow fiber material being extruded from the double spinning nozzle under specific conditions and cooling and solidifying or coagulating it while shaking.