【摘要】 为解决持久性有机污染物对地下水造成的污染,以硝基苯为研究对象,考察了超滤膜对硝基苯的去除效果及影响因素。试验结果表明,当进水硝基苯浓度为85μg/L,超滤膜可以连续工作68h,出水小于17μg/L。地下水中铁、锰离子对去除效果没有显著影响。进水硝基苯浓度对去除效果有显著影响。当进水硝基苯浓度由85μg/L上升至340μg/L时,超滤膜连续工作时间急剧下降,仅为14h;对由硝基苯引起的膜污染,2%CH3CH2OH清洗效果最佳。作为一项应急处理技术,该工艺可以保障小城镇地区饮水安全。更多还原

【Abstract】 In order to solve the pollution of groundwater caused by persistent organic contaminants,the removal efficiency and affecting factors of nitrobenzene removal from groundwater by using ultrafiltration technology was investigated.The experimental results indicate that the ultrafiltration system can work continuously for 68 hours when initial concentration is 85μg/L,and the nitrobenzene concentration of outflow is less than 17μg/L.Fe and Mn in groundwater have no significant impact on the removal efficiency,but the effect of initial nitrobenzene concentration of inflow is obvious.The continuous operation time decrease sharply from 68 to 14 hours when nitrobenzene concentration is 340 μg/L.2% CH3CH2OH has the best performance for cleaning the fouling caused by nitrobenzene.As an urgent treatment technology,ultrafiltration technology could guarantee the security of drinking water for people living in rural area.更多还原