光催化膜反应器在污废水处理中的应用研究进展

Applied research progress in photocatalytic membrane reactor technology in water and wastewater treatments

传统光催化氧化技术在催化剂应用形式方面存在诸多不可克服的制约因素,将光催化氧化技术与膜分离技术进行耦合可从不同角度较好解决此类难题;目前的光催化膜反应器主要有悬浮型、负载型和内嵌型光催化膜反应器3种;在全面论述各类光催化膜反应器的工艺特性的基础之上,针对当前光催化耦合分离膜在合理选择膜类型和膜孔径方面存在理论不足的现状,首次提出耦合分离膜在膜类型和膜孔径选择过程中所要遵循的理论原则、依据和一套可操作性极强的选择程序。

Several intrinsic drawbacks exist in the conventional photocatalytic oxidation process in terms of the application forms of photocatalyst, which can be overcome effectively by using photocatalytic membrane reactor, directly coupling the photocatalytic oxidation process with the membrane separation technology. Considering the lackness of the basis of the theory in choosing the type and pore size of coupled membrane, several theoretical principles and a corresponding reasonable procedure were put forward for the first time in this paper in respect to the advisable membrane choice, in addition to a brief but comprehensive description of technical characteristics of each kind of the coupled process.