机电工程技术2025，Vol.54Issue(5)：93-96,4.DOI:10.3969/j.issn.1009-9492.2025.05.016
基于深紫外激光的水中大肠杆菌消杀灭活方法研究
Research on the Method of Disinfecting and Inactivating Escherichia Coli in Water Based on Deep Ultraviolet Laser
苗风一 1陈浪 1曹雄晶 2李萌 1米高阳 1马修泉1
作者信息
- 1. 华中科技大学机械科学与工程学院,武汉 430074
- 2. 华中科技大学同济医学院附属协和医院,武汉 430074
- 折叠
摘要
Abstract
Water is an essential resource for the survival of living organisms,and it is crucial for human health.The disinfection and sterilization of water have received increasing attention.Escherichia coli,a foodborne pathogenic bacterium,is a major waterborne pathogen and serves as an indicator for water quality analysis.Common water disinfection methods,such as ozone,ultraviolet(UV)irradiation,and chlorination,all have some drawbacks.In response,this study proposes a method for disinfection and inactivation of Escherichia coli in water using deep ultraviolet(DUV)laser.By utilizing 266 nm ultraviolet laser,which undergoes multiple reflections and traversals in a water pipe,the microbial genome is disrupted,causing inactivation,inhibiting replication,and ultimately leading to the loss of reproductive capacity and death.In the experiments,the disinfection efficiency of ultraviolet laser against Escherichia coli is investigated by controlling the water flow rate.The results show that when the water flow rate is less than 240 mL/min,the inactivation efficiency of ultraviolet laser against Escherichia coli can be over 98%.As the water flow rate increases,the inactivation efficiency decreases slightly to 97%,indicating that ultraviolet laser can still achieve high inactivation efficiency of Escherichia coli.Therefore,ultraviolet laser can be used for disinfection of Escherichia coli in water,offering an efficient sterilization technology.关键词
紫外激光/大肠杆菌/水消毒Key words
ultraviolet laser/Escherichia coli/water disinfection分类
医药卫生引用本文复制引用
苗风一,陈浪,曹雄晶,李萌,米高阳,马修泉..基于深紫外激光的水中大肠杆菌消杀灭活方法研究[J].机电工程技术,2025,54(5):93-96,4.
