光催化氧化处理难降解污水的应用前景

Prospect of Photochemical Catalytic Oxidation Applied to Non-Degraded Sewage Disposal

随着工业的不断发展,环境污染日益严重,传统水处理工艺中的物理、生物方法不能满足水处理的需要。将光催化氧化法应用于气相和水相中一些难降解污染物的治理,研究结果表明,催化剂的选择、反应器的设计和对降解条件的优化是提高污染物光催化降解效率的关键因素。半导体光催化技术具有高稳定性、耐腐蚀、无毒的特点,在处理过程中不产生二次污染,有机污染物能被彻底无机化,因而这是一种洁净的处理技术。光催化技术为彻底解决水污染问题提供了新的手段,它在环境污染治理中有广阔的应用前景。

The environmental pollution is getting more serious with the development of industry. The traditional physical and biological technologies can not meet the requirement of sewage disposal. The photochemical catalytic oxidation can remove effectively the non-degraded pollutant in gas and water phases. The researched results show that the key factors for improving the degradation effectiveness using photochemical oxidation include the selection of catalysts, design of reactor and optimization of degradation conditions. The semiconductor photochemistry catalytic technique has the advantages of high stability, corrosion resistance and non-toxicity and without secondary pollution. This technique has an extensively applied prospect of pollutant control in the future.