Abstract:
The disclosure describes a porous membrane including the following: at least one polymeric feature on a surface of a porous membrane wherein the at least one polymeric features are bonded to the membrane using a nanoscale injecting molding device. Another aspect of the disclosure includes a porous membrane including the following: a first film layer; a second film layer; at least one polymeric feature between the first film layer and second film layer, wherein the at least one polymeric feature is bonded to at least the first film layer.
Abstract:
The invention relates to membranes, membrane modules, and applications therefor. In particular, the invention relates to the construction of membranes and membrane modules for use in osmotically driven membrane processes.
Abstract:
Described herein is a structure for a permeate spacer for use in spiral wound osmosis membrane elements, having at least two sets of parallel ribs, wherein the ribs in the first set are oriented at about a 90 degree angle to the ribs in the second set. The permeate spacer is used by sandwiching it inside a membrane envelope or leaf, and is particularly useful for non-pressure-driven processes, such as forward osmosis (FO) and pressure-reduced osmosis (PRO).
Abstract:
Disclosed is a spiral wound membrane element (10) that provides two permeate streams through a permeate carrier sheet (20). The spiral wound membrane element (10) is sealed such that the only communication with the permeate carrier (20) is through a membrane sleeve (12). The first permeate stream flows spirally inward and the second permeate stream flows in the opposite direction, spirally outward. The permeate carrier sheet (20) is sealed at two edges so that the permeate streams can only discharge from opposite, unsealed edges of the permeate carrier sheet (20). The first permeate stream may be collected in a central collection tube (16) and the second permeate stream may be collected in a peripheral region of the membrane element (10).
Abstract:
A filter element for use in a reverse osmosis, nano-filtration, membranes and spacers membrane-bioreactor, forward osmosis, or other filtration system, includes a permeate carrier substrate having a wrapped core tube. The permeate carrier includes a series of spaced ribs. The ribs are formed by application of yarns, strings or resinous or polymeric materials to a membrane substrate. The ribs define channels for passage of a liquid or gas permeate therealong. The permeate is received at the core tube which has one or more elongated flow recesses therealong to facilitate collection of the permeate.
Abstract:
La présente invention concerne un élément de filtration pour la filtration d'un milieu fluide comportant un support poreux rigide de forme cylindrique présentant un axe central longitudinal (A) et comprenant une pluralité de canaux pour la circulation du milieu fluide à filtrer en vue de récupérer un filtrat à la périphérie du support, lesdits canaux étant ménagés dans le support parallèlement à son axe central (A) et définissant au moins trois zones de filtration qui sont réparties de manière concentrique et séparées les unes des autres par une zone poreuse continue, caractérisé en ce que l'épaisseur moyenne de la zone poreuse (Z 1 ) la plus proche de l'axe central (A) est inférieure à l'épaisseur moyenne de la zone poreuse (Z n-1 ) la plus proche de la périphérie du support (1) et, lorsque l'on se déplace de l'axe central (A) du support vers sa périphérie, l'épaisseur moyenne d'une zone poreuse est soit identique à la suivante, soit inférieure.
Abstract:
A membrane bag (40) comprising a volume fox-permeate collection, wherein the volume is completely enclosed in seamless membrane substance (43); a filtration unit comprising at least one above-described seamless membrane bag; the use of at least one above-described seamless membrane bag in a-membrane bioreactor, in water filtration or waste water purification,- and for the filtration or separation of a mixture of fluids, vapours and particles. Two spacer fabrics (11,12) are spaced apart by a monofilament (15) to form a permeate channel (23). The membrane substance (43, 44) fills said space along the borders (41) of the bag.