As for the EK/ PRB system with chitosan or methanal-epoxy chloropropane modified chitosan for the reactive medium. The remediation efficiency of acid radical ions was better than that of EK/ PAN nanofiber PRB system. 以壳聚糖及甲醛-环氧氯丙烷改性壳聚糖为反应介质的EK/PRB修复系统在改变反应介质质量的情况下,其酸根离子的修复效果好于EK/PAN纳米纤维膜PRB系统。