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UV/TiO_2光催化消毒技术具有高效、无二次污染的优点,研究其应用于饮用水消毒具有现实意义。UV/TiO_2光催化产生活性基团氧化微生物的细胞结构,破坏其细胞功能,特别对细胞选择透过性的破坏,使细菌死亡。TiO_2特性、UV光照条件、水质条件和细菌特性都能不同程度影响光催化消毒的效率。UV/TiO_2光催化对实际生产水质条件下细菌的灭活效能及消毒后细菌复活的问题需要更多的研究。光催化反应器的优化设计、TiO_2膜的制备、TiO_2对可见光的响应的改性和在使用中TiO_2光催化活性的稳定性研究也有待深入开展。
UV/TiO 2 photocatalytic disinfection technology has the advantages of high efficiency and no secondary pollution. It is of practical significance to study its application in drinking water disinfection. UV/TiO 2 photocatalysis generates the cellular structure of the oxidizing microorganism of the active group, destroys its cell function, and in particular destroys the cell’s selective permeability, causing the death of the bacteria. TiO 2 characteristics, UV light conditions, water quality conditions, and bacterial characteristics all affect the efficiency of photocatalytic disinfection in different degrees. The UV/TiO 2 photocatalysis needs more research on the inactivation efficiency of bacteria under actual production water quality and the problem of bacteria reactivation after disinfection. The optimal design of photocatalytic reactors, the preparation of TiO 2 films, the modification of the response of TiO 2 to visible light, and the stability of the photocatalytic activity of TiO 2 during use are still to be further developed.