The present disclosure relates to diffusion and/or filtration devices comprising hollow fiber membranes, e.g., ultrafilters for water purification, plasma filters, or capillary dialyzers for blood purification; housings and end caps for the devices; and methods for the production of the devices.

The group of inventions relates to technologies for purifying liquid, primarily water for the domestic and/or drinking water supply in domestic and/or industrial conditions and in allotments and gardens. The characterizing feature of the group of inventions is that the design of a hollow fibre membrane device envisages, and a method for the manufacture thereof enables, the formation of a protective layer consisting of a single polymeric fixing material on the internal surfaces of mono-fibre sections which are incorporated into a binding unit, and the formation of sections which are in the form of a composite in the binding unit, which increases the strength of the hollow fibre membrane device, wherein open channels in the binding unit, formed with the aid of protective elements of an assembly base, make it possible to increase the specific filtering surface. The general problem addressed by the group of inventions, and the technical result which can be achieved with the use of the group of inventions, consists in creating a design of a hollow fibre membrane device and in developing a method for producing the design of the device, making it possible to increase the strength characteristics of the hollow fibre membrane device while simultaneously increasing the specific filtering surface.

A method of manufacturing a separator element for obtaining molecular and/or particulate separation by tangential flow of a fluid medium for treatment into a filtrate and a retentate, the element having a structure (2) of at least two porous rigid columns (3) made of the same material, positioned side by side to define, outside their outside walls, a volume (4) for recovering the filtrate, each column (3) presenting, internally, at least one open structure (5) for passing a flow of the fluid medium, opening out in one of the ends of the porous column for inlet of the fluid medium for treatment, and in the other end for outlet of the retentate. The element is a single-piece rigid structure (2) made as a single piece that is uniform and continuous throughout, without any bonds or exogenous additions.

A potting system comprising a potting unit having an integrated compressible seal formed from the same material that the potting unit is composed of.

There is provided a film separation device 1 equipped with a treatment tank 2 receiving a liquid to be treated, a film unit 3 to be immersed in the liquid to be treated, and a guide mechanism 4. The guide mechanism 4 is composed of holding sections 14 and a guide section 15. The holding sections 14 are provided on a side section of a film cassette 5 constituting the film unit 3, and the guide section 15 is fixed to the treatment tank 2. The guide section 15 has a tank-wall fixed section 15a, an upper extension section 15b, a held section 15c, a lower extension section 15d, and a tank-bottom fixed section 15e. When fixing the film unit 3 to the treatment tank 2, the holding sections 14 are fitted to the held section 15c, thereby guiding the film unit 3 to a predetermined position in the treatment tank 2.

A process for producing nitrogen-rich air by feeding high temperature air at 150° C. or more to an air separation membrane module is described. After being placed at 175° C. for two hours, the air separation module exhibits a shape-retention ratio of 95% or more in one embodiment. The nitrogen-rich air can be fed to a fuel tank for an aircraft, for example.

The invention discloses a distribution plate for supplying crossflow filtration cassettes, which comprises a surface, two opposite end walls, two opposite side walls, a feed channel in fluid communication with a feed inlet port and with a plurality of feed apertures; a retentate channel in fluid communication with a retentate outlet port, and with a plurality of retentate apertures; and a permeate channel in fluid communication with two permeate outlet ports and with a plurality of permeate apertures; wherein the feed channel, the retentate channel and the permeate channel extend in a direction essentially parallel with one or both side walls; wherein the feed apertures are grouped at a first area on the surface, the retentate apertures are grouped at a second area on the surface; wherein the permeate apertures are located at the first and/or the second area; and wherein a plurality of permeate connector channels extend inside the plate from at least one region of the permeate channel, adjacent the permeate outlet ports and the permeate connector channels provide fluidic communication between the permeate apertures and the permeate channel.

Provided is a filter module for a gravity-type water purifier. The filter module for a gravity-type water purifier according to an exemplary embodiment of the present invention includes: a plurality of filter members which are plate shaped, and which are fixed to each other via one or more fastening bars while arranged spaced apart from each other in parallel having gaps therebetween; and a common water collecting member coupled to the respective water collecting holes formed in the filter members, and in which filtered water produced from the filter members is collected.

Disclosed are a pressurized-type hollow fiber membrane module having a pressure resistance higher than 3 kgf/cm.sup.2 and a filtration system comprising the same. The pressurized-type hollow fiber membrane module comprises: a body case having an open end; a fixing member disposed in the body case at the open end; a hollow fiber membrane potted in the fixing member; and a cap on the open end of the body case, the cap and fixing member forming a filtrate-collecting space, wherein a lumen of the hollow fiber membrane is in fluid communication with the filtrate-collecting space, the fixing member has a step so that an upper side surface of the fixing member is not in contact with an inner surface of the body case, and a portion of the cap is inserted in a groove defined by the step of the fixing member and the inner surface of the body case.