Patent ID: 9050564
Filing Date: 2015-06-09
Classification: B01D,Y10T

Abstract:
1. A filter module comprising one or more flat filter elements wound spirally about an axis, a first end wall and a second end wall, wherein each flat filter element comprises two filter membranes and a drainage layer arranged between the filter membranes; each flat filter element has first and second edge regions which run substantially in the direction of the axis and are sealed in a fluid-tight manner over their entire length; each flat filter element has a third edge region which is connected to the first end wall; the third edge region is open at an outer side of the first end wall; the third edge region is sealed in a fluid-tight manner in relation to an inner side of the first end wall; and each flat filter element has a fourth edge region which is connected to the second end wall and sealed in a fluid-tight manner in relation to an inner side of the second end wall, the filter module comprises filter elements that are fluid-tight sealed relative to an optional distributor pipe, and the two filter membranes each comprise a woven or nonwoven support fabric and a porous membrane layer made from polymer.