超声解析生活饮用水中消毒副产物

Ultrasound Degradation of Disinfection By-Products in Drinking Water

三卤甲烷(trihalomethanes,THMs)、四氯化碳(carbon tetrachloride)被世界卫生组织国际防癌症研究所(IARC)列为2B类致癌物,去除或降低生活饮用水中这两类物质显得尤为重要。目前,我国家用水处理器基本都采用多级滤芯、活性炭吸附的方法达到去除目的。试验突破传统方法,采用超声净水技术,通过对水流空化、雾化、聚能冲击波微射流作用,有效降低水中挥发性有机物(三氯甲烷、四氯化碳)浓度。结果表明,超声水流量为3、4、5 L/h时总解析率平均值分别达(三氯甲烷)96.56%、(四氯化碳)95.28%,试验效果良好。

Trihalomethanes and carbon tetrachloride had been classified as class 2B carcinogens by the international institute for the prevention of cancer(IARC)of the world health organization.At present,to achieve the purpose of removal,basically the multistage filter,activated carbon adsorption method were adopted in our domesticwater processors.Non-traditional methods of ultrasonic water purification technology was adopted to effectively reduce the concentration of volatile organic compounds(trichloromethane and carbon tetrachloride)in water by cavitation,atomization and cumulative shock wave micro-jet of water flow.The experiment showed satisfactory results that the average value of the total analytic rate was 96.56%(trichloromethane)and 95.28%(carbon tetrachloride)when the ultrasonic water flow rate was 3,4 and 5 L/h.