电化学法去除地下水中硝酸盐用电极材料研究进展

Progress of electrode material in the removal of nitrate in groundwater by electrochemical method

地下水的硝酸盐污染日趋严重,尤其在广大农村地区以及城市近郊区问题更加严重。长期饮用硝酸盐含量超标的地下水,会影响人体健康引发疾病。因此,必须采取有效的方法对地下水中的硝酸盐进行处理使其达到饮用水水质标准要求。在众多的去除硝酸盐的方法中,电化学法因反应设备简单、操作简便易控、无剩余污泥产生及投资成本低等优势而被人们所关注,而电极材料在去除硝酸盐的过程中起着最关键的作用。对近年来电化学法去除地下水中硝酸盐反应过程中使用的电极材料进行了研究,发现使用多金属复合纳米电极材料去除硝酸盐的效果较好且是未来研究发展的趋势。

Nitrate pollution in groundwater has become increasingly serious,the problem is more serious especially in the vast rural,urban and suburban areas.Drinking excessive amounts of nitrate content of groundwater for a long time,can affect the health of human body.Therefore,it must take effective methods to deal with nitrate in groundwater to achieve water quality standards.In numerous method of nitrate removal,electrochemical method was attended by people because it has advantages,such as：simple reaction equipment,operation simple and easy to control,no excess sludge production and low cost of investment.The electrode materials used in the removal nitrates in groundwater in recent years were studied,and found that using multiple metal composite nanometer electrode materials to remove nitrate can obtain better effect,and nanometer electrode was the development trend of future research.