Abstract: A module arrangement (5) according to an embodiment of the invention consists of a plurality of membrane modules (6) arranged in a two dimensional array (7) and extending between upper and lower block-type manifolds (8) and (9), respectively. The array of modules is further divided into sub-groups of modules (10) separated from each other by space (11) extending transversely across the membrane array (7). An integrated support frame (12) is positioned in the space (11) between the sub-groups (10) and is fixed to the upper and lower manifold blocks (8) and (9) to form an integrated support structure within the module array (7).

Abstract: Disclosed herein are apparatus and methods for filtering a fluid including a filter module assembly coupled to a manifold. The manifold may include a manifold inlet in fluid communication with a source of feed liquid, an outlet in fluid communication with header of the filter module assembly, a fluid passageway in fluid communication with the manifold inlet, a source of gas, and the outlet, a second fluid passageway in fluid communication with the header and the first fluid passageway and a second manifold outlet vertically displaced from the first manifold outlet and in fluid communication between the first fluid passageway and the second fluid passageway.