CAJ | 학술논문

采用溶胶-凝胶法制备N掺杂TiO2溶胶，用浸渍-提拉方法将溶胶涂敷在陶瓷膜表面，制备具有抗污染性能的光催化陶瓷膜。光催化与膜分离技术相结合，处理含盐直接耐酸大红4BS染料废水，考察了料液pH值、初始浓度、跨膜压差、膜面流速等因素对含盐染料废水处理效果的影响。结果表明，该复合陶瓷膜对4BS染料的截留率在99％以上，对无机盐的截留率低于1％，光催化膜分离耦合的膜通量较单-膜分离的通量提高90％。
채용용효-응효법제비N참잡TiO2용효，용침지-제랍방법장용효도부재도자막표면，제비구유항오염성능적광최화도자막。광최화여막분리기술상결합，처리함염직접내산대홍4BS염료폐수，고찰료료액pH치、초시농도、과막압차、막면류속등인소대함염염료폐수처리효과적영향。결과표명，해복합도자막대4BS염료적절류솔재99％이상，대무궤염적절류솔저우1％，광최화막분리우합적막통량교단-막분리적통량제고90％。
N-doped TiO2 sol was synthesized by sol-gel method. The sol was coated on an inorganic ceramic membrane by dipping-raise method to make a photocatalytic ceramic membrane with antifouling characteristics. Dye wastewater containing salt (direct fast scarlet dye 4BS) was treated by the combination of photocatalytic technique and membrane separation. Initial concentration, pH, trans-membrane pressure and cross-flow veloci- ty on treatment effect of the dye wastewater was investigated. The results showed that the rate of rejection was 99% for the dye and less than 1% for inorganic salt in composite ceramic membrane. The permeate flux of the composite membrane was increased by 90 % in irradiation, without irradiation. compared with the processes of membrane separation