Flat-membrane element for filtration and flat-membrane...

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 63/08 (2006.01) B01D 61/18 (2006.01) B01D 69/12 (2006.01) B01D 71/32 (2006.01) B01D 71/36 (2006.01) C02F 1/44 (2006.01)

Patent

CA 2662925

A flat-membrane element to be used for conducting a solid-liquid separation treatment in which the element is immersed in a raw liquid containing a suspended ingredient. The element comprises: sheet-form filtration membranes which are disposed face to face so as to be separated from each other by a space serving as a channel for a treated liquid; supporting parts for securing the space serving as a treated-liquid channel; and a periphery-sealing part with which the periphery of the filtration membranes disposed face to face is sealed so as to leave at least one treated-liquid takeout opening. The filtration membranes each comprises a porous expanded PTFE (polytetrafluoroethylene) membrane.

L'invention concerne un élément de membrane plate destiné à être utilisé pour effectuer un traitement de séparation solide-liquide dans lequel l'élément est immergé dans un liquide brut contenant un ingrédient en suspension. L'élément comprend : des membranes de filtration en forme de feuille qui sont disposées face à face de façon à être séparées les unes des autres par un espace servant de canal pour un liquide traité ; des éléments de support pour fixer l'espace servant de canal pour un liquide traité ; et un élément pour sceller la périphérie, avec lequel la périphérie des membranes de filtration disposées face à face est scellée de façon à laisser au moins une ouverture de prélèvement du liquide traité. Les membranes de filtration comprennent chacune une membrane poreuse de PTFE (polytétrafluoroéthylène) expansé.

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