METHOD FOR OPERATING HOLLOW FIBER MEMBRANE MODULE

摘要

PROBLEM TO BE SOLVED: To provide a hollow fiber membrane module which can stably be operated for filtration for a long period of time. SOLUTION: The packing ratio of a hollow fiber membrane in the hollow fiber membrane module is regulated according to the turbidity of the original water to be supplied so that the stable operation of the hollow fiber membrane module can be continued since the backwashing and draining are facilitated. This hollow fiber membrane module is constituted so that the hollow fiber membrane is packed in a case housing having an inlet and an outlet and the original water containing a turbid component is made to flow through the hollow fiber membrane from the outside to the inside and filtered. The ratio B (%) of the gross cross-sectional area of the hollow fiber membrane to the cross-sectional area of the case housing in the width direction is adjusted according to the maximum value A of the turbidity of the original water so that relational expression (1): 0.6-0.05log10A≤B≤0.65-0.05log10A is satisfied. COPYRIGHT: (C)2006,JPO&NCIPI