CPC B01D 63/12 (2013.01) [B01D 61/025 (2013.01); B01D 61/145 (2013.01); B01D 63/10 (2013.01); B01D 63/103 (2013.01); C02F 1/44 (2013.01); C02F 1/441 (2013.01); C02F 1/442 (2013.01); D06C 15/02 (2013.01); B01D 61/147 (2013.01); B01D 67/0086 (2013.01); B01D 71/68 (2013.01); B01D 2313/14 (2013.01); B01D 2313/143 (2013.01); B01D 2313/146 (2013.01); B01D 2313/50 (2013.01); B01D 2315/10 (2013.01); B01D 2315/16 (2013.01); B01D 2317/02 (2013.01); C02F 1/444 (2013.01)] | 11 Claims |
1. A spiral-wound filter element comprising: a filtration membrane and a feed screen, wherein said feed screen provides at least 70% of the mass-transfer-limited permeate flux as a reference cassette filter having the same filtration membrane and feed spacer as the spiral-wound filter element, both run at the same cross flow flux and, wherein the outermost feed channel of the spiral-wound filter element is blocked.
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