臭氧,过氧化和过氧化硫酸盐对水中的MS2合体进行消毒
Zi-Chen Yang1, Wen-Long Wang1, Zi-Bo Jing1
1Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China. penglu@sz.tsinghua.edu.cn.
臭氧 (O3),过氧硫酸盐 (PMS) 和过氧化 (H2O2) 能够有效地使水中的MS2合体无活化. 臭氧证明了优越的消毒效率和二次废水中有机物质的去除,使其成为最佳选择.
科学领域:
- 环境科学 环境科学
- 水处理 处理水的方法
- 微生物学 微生物学
背景情况:
- 水中的病毒污染对公众健康构成重大风险.
- 有效的消毒策略对于预防水源性病毒性疾病至关重要.
- 氧化剂通常用于水的消毒.
研究的目的:
- 系统地比较臭氧 (O3),过氧化硫酸盐 (PMS) 和过氧化 (H2O2) 与MS2大肠杆菌的消毒功效.
- 评估氧化剂剂量和接触时间对病毒无活化的影响.
- 评估这些氧化剂在二次废水中的性能.
主要方法:
- 用O3,PMS和H2O2.2.的不同剂量和接触时间进行MS2胆管酶失活实验.
- 消毒功效通过对MS2 coliphage的日志性无活化进行测量.
- 激发发射矩阵 (EEM) 用于分析溶解有机物的去除.
主要成果:
- 在30分钟内,需要0.05mM O3,0.5mM PMS,或25mM H2O2来实现MS2胆囊细胞的4日志无活化.
- 臭氧在短短0.5分钟内实现了4-log消毒.
- 所有氧化剂都有效地使二次废水中的MS2聚合体失活,而臭氧显示出更彻底的有机物氧化.
结论:
- 臭氧,PMS和H2O2是水中的MS2胆菌的有效消毒剂.
- 臭氧是最有效的氧化剂,需要最小的剂量和最短的接触时间.
- 臭氧是MS2菌体在二次废水中消毒的首选选择,因为它的有效性和同时去除有机物质.
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