Filtering system

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 61/18 (2006.01) B01D 61/16 (2006.01) B01D 65/02 (2006.01) C02F 1/44 (2006.01) C02F 9/00 (2006.01) C02F 1/28 (2006.01)

Patent

CA 2442093

A filtering system comprising an inlet (11) for liquid to be filtered and an outlet (9) for filtered liquid, as well as filtering means, which system is characterized in that the filtering means, placed in series comprise: a first filter (2) comprising activated carbon with the capability to also remove particles that are larger than approximately 0.5 µm; an ultrafiltration membrane (5) for the removal of particles that are larger than approximately 0.02 µm; a post-treatment filter (14) of activated carbon, optionally provided with a microfiltration membrane (13), wherein the system also comprises a vessel (6) for filtered water located between the ultrafiltration membrane (5) and the post-treatment filter (14), with the option of using the filtered water from the vessel for back-flushing the ultrafiltration membrane (5).

L'invention concerne un système de filtration présentant une entrée pour le liquide à filtrer et une sortie pour le liquide filtré, ainsi que des moyens de filtration. Ce système est caractérisé en ce que ces moyens de filtration, montés en série, comprennent un premier filtre à charbon actif servant à éliminer des particules d'une dimension supérieure à environ 0,5 µm, une membrane d'ultrafiltration pour l'élimination de particules d'une dimension supérieure à environ 0,02 µm, un filtre de post-traitement à charbon actif, éventuellement équipé d'une membrane de microfiltration. Selon la présente invention, ce système comprend également un réservoir pour l'eau filtrée situé entre la membrane d'ultrafiltration et le filtre de post-traitement, l'eau filtrée contenue dans ce réservoir pouvant être éventuellement utilisée pour le rinçage de la membrane d'ultrafiltration.

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