关键词: 催化臭氧化, 纳米粒子, 膜, 腐殖酸, 过滤

Abstract: To further improve the effectiveness of membrane process and reduce membrane fouling，catalytic membranes were prepared with the phase transfer method in order to realize microfiltration coupling and catalytic ozonation for micro-polluted water treatment. The sol-gel method was used to prepare TiO2，and nano-sized particles at different heat treatment temperatures were added into the casting solution. The characteristics of catalytic membranes were investigated with X-ray diffraction（XRD），scanning electron microscopy（SEM），water flux，porosity，and contact angle. The membranes catalytic efficiency and membrane separation processes were also investigated. Rutile TiO2 （namely PVDF/ TiO2-600） membrane achieved above 70% and 65% removal rate of humic acid （HA） and total organic carbon （TOC），respectively. The novel catalytic membrane exhibited good catalytic ozonation activity and anti-fouling property for HA removal，which demonstrated that catalytic ozonation membrane an emerging technique for water treatment.

Key words: catalytic ozonation, nanoparticles, membrane, humic acid, filtration