纳滤组合工艺深度处理微量污染物

Advanced treatment of trace pollutants by a combination process of nanofiltration with other process

以污水处理厂的二级出水为处理对象,研究纳滤组合工艺(微滤-活性炭过滤-微滤-纳滤)对微量污染物的处理效果.结果表明,该工艺对浊度和TOC均有较好的去除效果,出水平均值分别为0.13 NTU1、.93 mg/L;对重金属砷、镉、铅的平均去除率分别为54.94%、86.73%和83.40%;对邻苯二甲酸酯类物质的截留效果较好,其中DBP和DEP的平均去除率分别为78.91%和78.95%.

Taking the effluent from secondary sedimentation tank of a wastewater treatment plant as research object,the treatment effect of trace pollutants was investigated by the combination of nanofiltration with other process（microfiltration/activated carbon/microfiltration/nanofiltration）.The results show that this process is favorable to the removal of turbidity and TOC,the average values of which in the effluent are 0.13 NTU and 1.93 mg/L.The average removal rates of As,Cd,Pb are 54.94%,86.73% and 83.40%,respectively.Nanofiltration membrane can reject phthalic acid esters（PAEs） effectively,and the average removal rates of DBP,DEP are 78.91% and 78.95%,respectiveiy.