Photocatalytic reaction mechanism of nano-TiO2 is introduced. The progress in the research on the application of nano-TiO2 photocatalytic technology to the degradation of wastewater containing oil stain, pesticides, dyeing , surfactant, other organic compounds and heavy metals, and wastewater from paper making is reviewed. The five factors that has limited the practical application of nano-TiO2 photocatalytic technology,such as the modification, immobility, preparation method, and application mechanism of nano-Ti02 and their negative influences on the application of nano-Ti02 are pointed out. Researchers should make continuous improvements on nano-TiO2 photocatalytic technology, so as to make its application to the treatment of industrial wastewater become broader and more effective.%介绍了纳米TiO2的光催化反应机理,概述了纳米TiO2光催化技术在降解油污废水、农药废水、染料废水、表面活性剂废水、造纸废水、其他有机物废水,以及含重金属废水中的应用研究进展.指出限制纳米TiO2光催化技术实际应用的5个因素:纳米TiO2的改性、纳米TiO2的固定化、纳米TiO2的制备方法、纳米TiO2的应用机理和纳米TiO2的负面影响.科研工作者需不断完善纳米TiO2光催化技术,才能使其在工业废水处理领域得到更广泛和有效的应用.
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