为提高多孔陶粒在高重金属离子含量环境中的吸附容量和稳定性，采用焙烧法 对多孔陶粒负载改性，研究了陶粒在 FeCl3溶液中的浸渍次数、 FeCl3溶液浓度及焙烧温度 对陶粒表面形貌和重金属离子去除率的影响，确定了负载制备改性陶粒的最优工艺参数: FeCl3溶液浸渍3 次、 FeCl3溶液浓度为1． 5mol/L、焙烧温度为650℃． 在高重金属离子含量 条件下，改性前后陶粒对 Cu2 + 的吸附量由 0． 188mg/g 增加至 0． 897mg/g， Cu2 + 浸出率由 3．52%降低至0．96%;改性陶粒对Pb2 + 、 Cu2 + 、 Cd2 +的去除率分别为15．0%、 22．4%、 50．1%， 较 未改性时分别提高了6． 7 倍、 7． 9 倍和8． 7 倍． 

 In order to improve the adsorption capacity and stability of ceramsite in wastewater with high heavy-metal concentration，porous ceramsite was modified via a pretreatment in FeCl3 solution and a calcination process． Then，the surface morphology of the ceramsite and the removal rates of heavy metals affected by the number of immersion-drying cycles，FeCl3 solution concentration and calcination temperature were investigated． The maximum adsorption capacity was achieved when the ceramsite was immersed in 1. 5 mol/L FeCl3 solution for 3 immersion-drying cycles and then calcined at 650 ℃． In a high heavy-metal concentration environment，the adsorption amount of Cu2 + increases from 0. 188 to 0. 897 mg/g，and the leaching rate of Cu2 + decreases from 3. 52% to 0. 96%． Moreover，the removal rates of Pb2 + ，Cu2 + and Cd2 + by the modified ceramsite respectively achieve 15. 0%， 22. 4% and 50. 1%，which are 7. 7，8. 9 and 9. 7 times that by the original ceramsite，respectively．