FILTER AND METHOD FOR THE DESALINATION OF WATER BY MEANS OF REVERSE OSMOSIS OF THE CENTRIFUGAL TYPE, INVOLVING THE GENERATION OF DEAN VORTICES

摘要

The invention relates to a method for the desalination of seawater and to the design and construction of a centrifugal filter for water desalination. The method comprises the use of: a filter based on reverse osmosis technology, said filter forming a fundamental component; and modules comprising hollow fibre membranes arranged helically around a central supporting tube and distributed in concentric rings along the periphery of the rotating section in order to promote the formation of Dean vortices. According to the invention, the membrane is constructed with an aromatic polyamide structure as a first layer, followed by a layer of polyester sulfone and a supporting polyester layer, with Kevlar 49 material being applied at position 1 and 4 in the aromatic chain in order to increase the structure and resistance of the membrane.