纳米TiO_2-光催化灭活污水厂出水病毒的研究  

Inactivation of Virus in Wastewater Treatment Plant Effluent by Nano TiO_2-photocatalysis

作　　者：顾霓涛 龚天翼 乔宇祥 吕文洲[1] GU Ni-tao;GONG Tian-yi;QIAO Yu-xiang;LYU Wen-zhou(Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo 315211, China;Ningbo Municipal Sewerage Co. Ltd., Ningbo 315192, China;Ningbo Scientific Research and Design Institute of Environmental Protection, Ningbo 315200, China)

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211 [2]宁波市城市排水有限公司,浙江宁波315192 [3]宁波市环境保护与科学研究设计院,浙江宁波315200

出　　处：《中国给水排水》2018年第9期96-100,共5页China Water & Wastewater

基　　金：浙江省自然科学基金资助项目(LQ14D010001);宁波市自然科学基金资助项目(2017A610298)

摘　　要：选取宁波市两个污水处理厂消毒前后出水,以噬菌体MS2作为模式病毒,探讨纳米TiO_2-光催化灭活水中病毒的可行性。试验分别考察了TiO_2浓度、紫外光作用时间对病毒的灭活效果,评价了太阳光代替紫外光对出水中MS2的灭活能力。结果表明,TiO_2-光催化灭活污水处理厂出水MS2的效果因污水处理厂水质而异。低浓度TiO_2的灭活效果不佳,当TiO_2浓度为200mg/L时,紫外光照射6 h,A厂消毒后出水中MS2的灭活率为4.76-lg;照射10 h后,MS2的灭活率为6.94-lg;若使用太阳光代替紫外光照射6 h,则A厂消毒后出水中MS2灭活率可以达到7.88-lg,优于紫外光的灭活效果,表明在纳米TiO_2-光催化灭活污水厂出水病毒过程中以太阳光代替紫外光具有可行性。The effluent before and after disinfection process of two wastewater treatment plants （WWTPs） in Ningbo was collected, and the feasibility of inactivating viruses in the effluent by nano TiO2-photoeatalysis was evaluated by using MS2 as the model virus. Effects of TiO2 concentration and irradiation time on inactivation efficiency of MS2 were investigated, and the capacity of inactivating MS2 in the effluent using sunlight instead of ultraviolet was discussed. The results showed that the inactivation efficiency of MS2 in the effluent varied from the effluent quality of WWTPs by TiO2-photocatalysis. The inactivation efficiency was poor at low TiO2 concentration. 4.76-1g of MS2 in the effluent of the plant A was inactivated in 6 hours＇ ultraviolet irradiation at the concentration of 200 mg/L of TiO2, and the inactivation rate reached 6.94-1g when the irradiation time increased to 10 hours. 7.88-1g of MS2 in the effluent after disinfection process of plant A was inactivated in 6 hours＇ sunlight irradiation instead of ultraviolet, and the inactivation efficiency was superior than that of ultraviolet, which indicated that it was feasible to use sunlight instead of ultraviolet to inactivate viruses in the effluent of WWTPs by nano TiO2-photocatalysis.

关 键 词：污水厂出水 病毒灭活 纳米TIO2 噬菌体MS2 

分 类 号：TU992[建筑科学—市政工程]