亚铁活化过硫酸盐氧化渗滤液尾水工艺参数优化

摘要

采用亚铁活化过硫酸盐氧化渗滤液尾水，利用单因素变量法研究了亚铁活化过硫酸盐氧化渗滤液尾水的工艺参数。结果表明，适宜的工艺参数：n（Fe2+）（S2O82-）为0．25，废水初始pH=4，过硫酸钠投加量为4．0 g/L，反应时间为12 h。在上述工艺条件下，渗滤液尾水的COD去除率和色度去除率可分别达到60％和95％。该项研究可为渗滤液尾水的处理提供一种技术选择。%Leachate tail water has been treated by Fe2+-activated persulfate oxidation,and the technical parameters of the process are studied by single-factor variable method. The results show that the optimum parameters are as follows:n(Fe2+)(S2O82-) is 0.25,initial pH 4,Na2S2O8 dosage 4.0 g/L,and reaction time 12 h. Under these conditions, the leachate tail water COD removing rate and chroma removing rate are 60%and 95%,respectively. The research results can provide a kind of technical reference for landfill leachate tail water treatment.