中文摘要：

植物-生物膜氧化沟系统将多种污水处理工艺包含在极其简单的装置中，兼具氧化沟、生物膜法和植物修复三种处理过程。采用该工艺处理生活污水的试验结果表明，对COD、TN、TP、SS的平均去除率分别为51．02％、32．5％、41．23％、58．92％，出水水质达到了国家一级B排放标准；各植物在氧化沟中发挥的作用存在较大差异，其中美人蕉对氮、磷的去除量最大，水浮莲次之，茭白和通莱的较小。

英文摘要：

The plant-biofilm oxidation ditch （PBFOD）system encompasses manifold wastewater treatment techniques while using simple treatment equipment. This combined system integrates the oxidation ditch, biofilm and phytoremediation processes. In an experiment, the PBFOD system was used to treat municipal wastewater. The average removal rates of COD, TN, TP and SS are about 51.02%, 32.5% , 41.23% and 58.92% , respectively. The effluent quality reaches the first level B criteria specified in the national standard. The plants play different roles in the PBFOD system, and the order of removing nitrogen and phosphorus is Canna glauca L 〉 Eichhornia crassipes 〉 Zizania latifolia and lpomoea aquatica.