Method and apparatus for treatment of liquid

Details Method and apparatus for treatment of liquid Method and apparatus for treatment of liquid

C - Chemistry, Metallurgy

02

F

C02F 1/44 (2006.01) B01D 61/00 (2006.01) B01D 61/14 (2006.01) B01D 63/08 (2006.01) B01D 65/02 (2006.01) B01D 65/08 (2006.01) B01D 69/12 (2006.01)

Patent

CA 2275871

The invention relates to a method for treatment of liquid, that is meant particularly for filtering of pressurized liquid, such as water led from a water distribution system, by means of an apparatus, which has an essentially closed frame (1), in connection with which there has been arranged at least filtering means (2) for purifying of liquid and flow means (3), such as feed-flow and/or exhaust flow arrangements (3a, 3b) for leading of liquid. The filtering means (2) are made of thin filtering film (2a), advantageously made of plastic based material, such as PTM (Particle Track Membrane), TeM (Track-etch Membrane) or like, the thickness of which is preferably 7-25 µm and the size of pores of which is 0,05-10 µm. The filtering film (2a) belonging to filtering means (2) are being purified essentially self-powered, such as by means of purification means (5) exploiting the pressure (p), the movement (v1) and/or like of the liquid to be treated and/or the liquid that has been treated. The invention relates to an apparatus operating according to the method as well.

Cette invention concerne un procédé de traitement de liquides qui est notamment destiné au filtrage d'un liquide sous pression tel que de l'eau provenant d'un système de distribution d'eau. Ce procédé fait appel à un appareil qui comprend un cadre (1) globalement clos auquel sont associés au moins un système de filtrage (2) permettant de purifier le liquide, et au moins un système d'écoulement (3). Ce dernier peut par exemple consister en des dispositifs de débit d'alimentation/débit de refoulement (3a, 3b) qui assurent l'écoulement du liquide. Les systèmes de filtrage (2) consistent en des films de filtrage fins (2a) qui sont de préférence faits d'un matériau à base de plastique tel que des PTM (membrane de piégeage de particules), des TeM (membrane de piégeage et d'attaque), ou analogues. L'épaisseur de ces films varie de préférence entre 7 et 25 mu m, tandis que la taille de leurs pores varie de 0,05 à 10 mu m. Les films de filtrage (2a) du système de filtrage (2) sont nettoyés essentiellement de manière automatique comme, par exemple, à l'aide d'un système de nettoyage (5) qui utilise la pression (p), le mouvement (v1) et/ou d'autres facteurs du liquide à traiter et/ou du liquide traité. Cette invention concerne également un appareil fonctionnant d'après ce procédé.

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