脉冲磁场水处理技术在杀菌、灭藻方面的研究  

Sterilization and algae killing by the application of pulsed magnetic field

作　　者：李梅[1] 曲久辉[2] 彭永臻[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]中国科学院生态环境研究中心,北京100085

出　　处：《环境科学学报》2004年第2期260-264,共5页Acta Scientiae Circumstantiae

基　　金：中国科学院知识创新工程重要方向项目资助 (KZCX2 4 0 9) ;国家自然科学基金重点资助项目 (5 983830 0 )

摘　　要：研究利用直流脉冲发生器与线圈绕组相连产生的脉冲磁场杀菌灭藻的水处理技术 .实验表明 ,脉冲电磁场具有明显的杀菌作用 ;增加磁场强度、处理时间和脉冲频率可以提高杀菌效果 .此外 ,通过监测处理后水样中溶解氧的变化 ,证实脉冲磁场具有灭藻功能 ,并表现出对强度和频率的选择 .当停留时间为 30min ,磁场强度 5 0 0mT ,脉冲频率 4 0kHz实验条件下 ,循环处理后水中细菌总数的存活率为 0 0 1% ,藻类基本死亡 ,电耗大约 0 2kW·h·m-3 .A new electromagnetic technique for water treatment,sterilization and algae killing was studied.The experimental results indicated that the pulsed magnetic field has obviously the effects of killing bacteria and algae.Increase in intensity,retention time and the pulse frequency could enhance the efficiency.By monitoring the dissolved oxygen,it is confirmed that the water treatment by the pulsed magnetic field had a strong function of algae killing and the efficiency depends on the intensity and frequency.The application of an magnetic intensity 500mT at pulse frequency 40?kHz and retention time 30?min resulted in a considerable destruction of bacteria cells (survivability 0.01%) and algae;and the power consumption was about 0.2?kW·h·m^(-3).

关 键 词：脉冲磁场水处理技术 灭藻功能 杀菌功能 感应电流 脉冲频率 处理时间 湖泊 

分 类 号：X524[环境科学与工程—环境工程] X703.1