B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 63/02 (2006.01) B01D 61/18 (2006.01) B01D 65/08 (2006.01) B01D 69/08 (2006.01) C02F 1/44 (2006.01)
Patent
CA 2268161
The invention relates to a water filtration device for the local sterilization of domestic and/or drinking water, comprising a filter housing (10) provided with an inlet (11) and outlet (12) connection and provided in said filter housing (10) with a bundle of capillary membranes (20), a first end (21) of said capillary membranes being open and another end (22) being closed, and said capillary membranes (20) being at the first end (21) cased in a membrane holder closing off the space between the capillary membranes (20) and the filter housing. The membranes are micro or ultrafiltration membranes having an asymmetric pore structure, the pore structure being asymmetric in that the pore diameter gradually decreases in the flow direction of the liquid low through the membrane wall. The membranes are manufactured from a polyether sulphone polyvinyl pyrrolidone polymer (PES/PVP polymer) and the pore diameter at the side of the asymmetric pore structure having the smallest diameter being between 0.01 and 0.3 µm, depending on the application.
Cette invention concerne un dispositif de filtration d'eau permettant d'effectuer la stérilisation locale d'eau à usage domestique et/ou d'eau potable. Ce dispositif comprend un boîtier de filtre (10) qui comporte des connexions d'admission (11) et d'évacuation (12), et qui renferme un amas de membranes capillaires (20). Une première extrémité (21) de ces membranes capillaires est ouverte, tandis que l'autre extrémité (12) est fermée. Au niveau de la première extrémité (21), ces membranes capillaires (20) sont enfermées dans un dispositif de support de membranes, lequel va fermer l'espace séparant lesdites membranes capillaires (20) du boîtier de filtre. Ces membranes consistent en des membranes microfiltantes ou ultrafiltrantes, et possèdent une structure poreuse asymétrique du fait que le diamètre des pores décroît progressivement dans le sens d'écoulement du débit liquide à travers la paroi de la membrane. Ces membranes se composent d'un polymère sulfone de polyéther-pyrrolidone de polyvinyle (PES/PVP). Le diamètre des pores, du côté de la structure poreuse asymétrique possédant le diamètre le plus réduit, varie entre 0,01 et 0,3 mu m en fonction des applications.
Moffat & Co.
Prime Water Systems N.v.
Vestergaard Sa
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