运用小型电渗析装置配制含Co(Ⅱ)、Mn(Ⅱ)和Cs(Ⅰ)的模拟放射性废水,研究了不同操作条件下电渗析对废水中核素的去除性能。结果表明,随着电压的升高,3种核素的总去除率均上升;随着流速升高,3种核素的总去除率均降低;随着pH升高,Co(Ⅱ)和Mn(Ⅱ)的总去除率降低,Cs(Ⅰ)的总去除率提高。在操作电压为12 V、流速为0.14 m/s和pH为6.0的条件下,Co(Ⅱ)、Mn(Ⅱ)和Cs(Ⅰ)的总去除率分别为98.21%、97.77%和99.81%。

A small scale electrodialysis device is employed to prepare the simulated radioactive wastewater containing Co(Ⅱ),Mn(Ⅱ) and Cs(Ⅰ),and the performance of electrodialysis for removing nuclides from the wastewater is studied under different operating conditions.Results show that total removal rates of all three nuclides increase with increasing voltage,and decrease with increasing flow rate.With increasing pH,total removal rates of both Co(Ⅱ) and Mn(Ⅱ) decrease but that of Cs(Ⅰ) increases.Total removal rates of Co(Ⅱ),Mn(Ⅱ) and Cs(Ⅰ) are 98.21%,97.77% and 99.81%,respectively when the operating voltage is 12 V,the flow rate is 0.14 m·s^-1 and pH is 6.0.

谢雨东(1997-),男,硕士研究生,研究方向为舰船核环境工程,1436059069@qq.com。