HOLLOW FIBER MEMBRANE MODULE AND WATER TREATMENT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a hollow fiber membrane module with low possibility of damage to a hollow fiber membrane while water collection is available from both sides of top and bottom. SOLUTION: The hollow fiber membrane module 10 includes a plurality of hollow fiber membranes 11 immersed so as to vertically extend in water to be treated and is structured to collect penetrated water penetrated from the outside to the inside of the hollow fiber membrane from both sides of top and bottom, and a diffusion mechanism for generating bubbles on the lower end side of the hollow fiber membrane. A lower stationary member 30 includes a gas storage chamber 30b provided under a water collection chamber 30a and a bubble passage 33x passing from the gas storage chamber to the top face side of the stationary part through the dust collection chamber. There is also provided the diffusion mechanism structured so that gas is stored in the gas storage chamber and the stored gas passes through the bubble passage and is floated to generate bubbles on the top face side of the stationary part. COPYRIGHT: (C)2011,JPO&INPIT