高电压技术2017，Vol.43Issue(6)：1792-1799,8.DOI:10.13336/j.1003-6520.hve.20170527006
强电离放电等离子体在应急净化饮用水中的应用
Application on Strong Ionized Discharge Plasma to Emergency Drinking Water Disinfection
摘要
Abstract
In order to solve the problems in conventional plasma water treatment technologies (long treating time,small treatment capacity),as well as to promote the application of plasma technology in drinking water emergency disinfection,a novel strong ionized discharge composing of micro-streamer and micro-glow discharges for water rapid treatment was studied in this study.During the experiments,high concentration of reactive free radicals were efficiently generated in water via the strong ionized discharge and hydrodynamic cavitation,the lethal dose and treating time for Escherichia coli inactivation by strong ionized discharge were studied,and the emergency treatments on source water with different water qualities were carried out to evaluate the inactivation efficiency and changes of general water-quality.Results showed that 100％ inactivation ratio for 104～106 mL-1 of Escherichia coli could be obtained at a low concentration (0.5～0.7 mg/L) of reactive free radicals in 3～10 seconds,with a discharge power of 120～130 W and a cavitation intake air flow of 0.1 L/min.Meanwhile,after being treated with 140～160 W of discharge power and 0.8～1.2 mg/L of reactive free radicals,the microbiological indicators in treated source water complied to the national drinking water sanitary standards,the color degree were significantly reduced to less than 15 degree,and the values of UV254 were declined 68％～76％.Moreover,no possible disinfection by-products (like formaldehyde) was found in treated water.The treatment results conform to the demands of drinking water emergency purification.In addition,the concentration of reactive free radicals formed in water by strong ionized discharge plasma could be higher than 8 mg/L,which could meet the requirements of large flow water disinfection treatment.Results provide an important foundation for the application researches of strong ionized discharge plasma in the emergency treatment of microbial contaminated drinking water,and medical waste water in hospital.关键词
强电离放电/等离子体/活性氧自由基/饮用水应急消毒/水处理Key words
strong ionized discharge/plasma/reactive free radicals/emergency drinking water disinfection/water treatment引用本文复制引用
田一平,周新颖,袁晓莉,俞哲,张芝涛..强电离放电等离子体在应急净化饮用水中的应用[J].高电压技术,2017,43(6):1792-1799,8.基金项目
国家自然科学基金(51309039) （51309039）
国家“十二五”科技支撑计划(2013BAC06B02) （2013BAC06B02）
国家重大科研仪器研制项目(61427804) （61427804）
辽宁省教育厅科研项目(LZ2015007).Project supported by National Natural Science Foundation of China (51309039),National Key Twelfth-five Year Science and Technology Supporting Program of China (2013BAC06B02),National Key Scientific Instrument and Equipment Development Project (61427804),Scientific Research Project of Department of Education of Liaoning Province (LZ2015007). （LZ2015007）
