Patent ID: 7686955
Filing Date: 2010-03-30
Classification: B01D,C02F

Abstract:
1. A submerged hollow fiber membrane module, comprising: first and second module headers, each of the module headers having a filtrate water collecting portion for collecting filtrate water filtered through hollow fiber membranes and a filtrate water outlet; an air diffusion unit between the first and second module headers, the air diffusion unit comprising support tubes and first and second air diffusion tubes having air diffusion holes; and a bundle of hollow fiber membranes having both opposite ends fixed to the insides of the module headers by an adhesive so as to form a water collecting space within the module headers, the ends of the hollow portions of the hollow fiber membranes being opened and disposed in parallel to a filtrate water discharge surface, wherein each of the support tubes has opposite ends connected to the two module headers respectively thereby keeping the two module headers spaced apart by a predetermined distance, and at least one of the support tubes has a plurality of air diffusion holes, wherein each of the first and second air diffusion tubes is connected to the support tubes near the first and second module headers, respectively, and disposed in the bundle of hollow fiber membranes, wherein the support tubes and the first and second air diffusion tubes are in fluid communication with one another, and wherein the first and second air diffusion tubes eject air in a first direction substantially parallel with a longitudinal direction of the hollow fiber membranes and at least one of the support tubes ejects air in a second direction substantially perpendicular to the longitudinal direction of the hollow fiber membranes.