利用液体电极沿面放电等离子体反应器,对大肠杆菌的灭活效果进行了研究.考察了曝气量、初始含菌量和初始pH值等因素对大肠杆菌的存活细菌群落总数(cfu)的影响.实验结果表明:大肠杆菌的存活细菌群落数随初始含菌量、处理时间的增加而减少.弱碱性条件有利于大肠杆菌的灭活.反应系统中,曝气量对大肠杆菌灭活效果影响很大.在曝气量为4.5 L/min,电源频率7 kHz,电压6 kV条件下,500 mL初始含菌量为107 cfu/mL的大肠杆菌菌液,放电处理5 min,可将全部大肠杆菌杀灭.本研究为液体电极沿面放电反应器在细菌灭活方面的应用提供参考.
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