Removal of color substances using photocatalytic oxidation for membrane filtration processes

This study aims to remove the color substances, which normally cause diffic ulties in membrane filtration processes due to fouling using heterogeneous UV/TiO2/H2O2 reactor. It is confirmed that the technique used in this study was effective to remove TOC at 38% and color(400) at 89% within 150-min ir radiation. The experiment results showed that low concentrations of hydroge n peroxide dosage (less than 0.016 M) to UV/TiO2 system accelerated the TOC and Color(400) removal rate from 9% to 38% and 40% to 89% respectively. wh ile over-dosage made this positive effect decline. The humic acid solution treated by photo catalytic oxidation in UV/TiO2/H2O2 reactor did not change the zeta potential on membrane surface and membrane rejection rate.