Filtration system

Details Filtration system Filtration system

B - Operations, Transporting

01

D

B01D 65/02 (2006.01) B01D 61/00 (2006.01) B01D 61/08 (2006.01) B01D 61/18 (2006.01) B01D 61/28 (2006.01) B01D 63/00 (2006.01) B01D 63/02 (2006.01) B01D 63/06 (2006.01)

Patent

CA 2593412

A method and apparatus for cleaning a permeable, hollow membrane (7) in an arrangement of the type wherein a pressure differential is applied across the wall of the permeable, hollow membrane (7) immersed in a liquid suspension, the liquid suspension being applied to the outer surface of the permeable hollow membrane to induce and sustain filtration through the membrane wall, the method of cleaning comprising the step of producing mechanical agitation between the membrane and the liquid suspension to dislodge at least some of the solids retained in or on the membrane. Application of the pressure differential by force of gravity applied to the liquid is also disclosed.

L'invention concerne un procédé et un appareil permettant de nettoyer une membrane creuse perméable (7) dans un agencement dans lequel un différentiel de pression est appliqué sur la paroi de la membrane creuse perméable (7) immergée dans une suspension liquide, laquelle est appliquée sur la surface extérieure de ladite membrane creuse perméable afin d'induire et de procéder à une filtration soutenue à travers la paroi de la membrane. Le procédé de nettoyage comprend une étape consistant à produire une agitation mécanique entre la membrane et la suspension liquide de façon à déloger au moins certains solides retenus dans ou sur la membrane. L'invention concerne également l'application du différentiel de pression par gravité sur le liquide.

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