摘要
为了控制微生物繁殖对电厂循环冷却水系统造成的危害,研究了脉冲电源发生器与线圈绕组相连产生的脉冲磁场对循环水中异养菌的灭活影响,并对灭活关键因素进行了分析。实验结果表明,脉冲磁场对电厂循环冷却水中的异养菌有灭活作用;灭活率对频率和输出电压有选择性,并且随着作用时间和温度的升高而升高;在扫频范围100~1000 Hz、输出电压3 V、单次作用时间为15 s,温度45℃时,异养菌灭活率达到78.8%。
In order to control the harm caused by microbial growth in circulation cooling water systems,the inactivation of heterotrophic bacteria was investigated with the pulsed magnetic fields generated by DC-pulse generator combining with coil windings.Analyses for key factors of sterilization were carried out.The experimental results revealed that the pulsed magnetic fields have effects on inactivation of heterotrophic bacteria in the circulation cooling water system.The inactivation rates take selectivity for the frequency and output voltage.The inactivation rates increase with the increasing of temperature and time duration for each pulse.When the sweep frequency of pulsed magnetic field ranges from 10 to 1 000 Hz,the output voltage is 3 V,and the time duration for each pulse is 15 s,the inactivation rate is 78.8%.
出处
《环境工程学报》
CAS
CSCD
北大核心
2012年第4期1113-1116,共4页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(51068020)
内蒙古自治区自然科学基金(2009MS0605)
内蒙古高等学校科学研究项目(NJ10086)
关键词
扫频脉冲磁场
异养菌
灭活率
循环冷却水
sweep pulse magnetic field
heterotrophic bacteria
inactivation rate
circulation cooling water