Method and apparatus providing improved throughput and...

C - Chemistry – Metallurgy – 02 – F

Patent

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C02F 3/00 (2006.01)

Patent

CA 2560193

A submerged membrane assembly including a membrane having a first surface, a second surface, and a vertical axis, and which is permeable between the surfaces by molecules of less than a predetermined size. A first fluid compartment in fluid communication with the first membrane surface and that contains at a first column height a first fluid having a first specific gravity, a second fluid compartment in fluid communication with the second membrane surface and that contains at a second column height a second fluid having a second specific gravity, and means for changing the second specific gravity. The second column height being selected relative to the first column height to produce a selected pressure differential across the membrane along the vertical axis at the first specific gravity and the changed second specific gravity.

L'invention concerne un ensemble de membrane submergé comprenant une membrane présentant une première surface, une seconde surface et un axe vertical et étant perméable entre les surfaces à des molécules de taille inférieure à une taille prédéterminée ; un premier compartiment de fluide en communication fluidique avec la première surface de la membrane et renfermant, au niveau d'une première hauteur de colonne, un premier fluide possédant une première gravité spécifique ; un second compartiment de fluide en communication fluidique avec la seconde surface de la membrane et renfermant, au niveau d'une seconde hauteur de colonne, un second fluide possédant une seconde gravité spécifique ; et des moyens permettant de modifier celle-ci. La seconde hauteur de colonne est sélectionnée par rapport à la première hauteur de colonne, aux fins de production d'un différentiel de pression sélectionné sur la membrane, le long de l'axe vertical, à la première gravité spécifique et à la seconde gravité spécifique modifiée.

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