Patent ID: 9034189
Filing Date: 2015-05-19
Classification: B01D

Abstract:
1. A pressurized hollow fiber membrane module comprising: a module case having a raw water inlet and a filtered water outlet; a bundle of composite hollow fiber membranes disposed in the module case; a first fixing member in which one ends of the composite hollow fiber membranes are potted, the first fixing member being fixed on an inner surface of the module case; and a second fixing member in which the other ends of the composite hollow fiber membranes are potted, the second fixing member being fixed on the inner surface of the module case, wherein each of the composite hollow fiber membranes comprises a tubular braid woven by yarns and a polymer film on an outer surface of the tubular braid, wherein at least one of the yarns comprises a small-fineness filament and a medium-fineness filament, wherein the small-fineness filament comprises first monofilaments having a fineness of 0.01 to 0.4 denier, wherein the medium-fineness filament comprises second monofilaments having a fineness higher than 0.4 and lower than 3, and wherein a ratio of thickness of the tubular braid to outer diameter thereof is 15 to 35%.