OXIDATION RISK EVALUATION METHOD OF SEPARATION MEMBRANE IN SEPARATION MEMBRANE FILTRATION PLANT

摘要

PROBLEM TO BE SOLVED: To provide an oxidation risk evaluation method of a separation membrane in a separation membrane filtration plant where the oxidation potential of membrane filtration supply water is accurately and quickly grasped, the oxidation degradation of the separation membrane is forecasted and measures are taken when evaluating the oxidation risk of the separation membrane in the separation membrane filtration plant.;SOLUTION: In an oxidation risk evaluation method of a separation membrane in a separation membrane filtration plant: membrane filtration supply water is continuously fractionated; fractionated water is supplied to a water supply container; a part of an oxidative substance sensibility member containing a substance having oxidative substance sensibility equal to or higher than a membrane material in the separation membrane filtration plant is taken out and the oxidative decomposition degree of the oxidative substance sensibility member is measured; and the oxidation potential of the membrane filtration supply water is evaluated on the basis of the oxidative decomposition degree and/or an oxidation rate calculated from the oxidative decomposition degree.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT