OPERATION METHOD FOR MEMBRANE SEPARATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an operation method for a membrane separation apparatus easy to set the flow rate of a non-permeable liquid at which the flow passages in the membrane module are not clogged. SOLUTION: The average flow velocity of a non-permeable liquid in the passages in a membrane module is increased more as the viscosity of the non- permeable liquid is increased more. The flow rate of the non-permeable liquid at which the passages in the membrane module are prevented from clogging is calculated by multiplying the average flow rate of the non-permeable liquid with the cross-section surface area of the passages.