摘要： 为了研究不同形式复合人工湿地对污染河水的净化特性，实验构建了2种相同基质及植物的表流-水平潜流和表流-垂直潜流复合人工湿地，并以相同的进水负荷连续运行了1 a。结果表明，2组复合人工湿地均能有效地净化污染河水，表流-水平潜流人工湿地对污染河水BOD₅、SS、TN和NH₃-N的去除效果优于表流-垂直潜流人工湿地（p<0.05），且前者中的植物具有更好的生长特性和氮磷去除能力。表流人工湿地的存在不仅能够避免二级潜流湿地的堵塞，也能有效提高系统总氮去除能力。

关键词: 复合人工湿地, 污染河水, 植物作用

Abstract: In order to study the purification characteristics of polluted river water treated by different forms of hybrid constructed wetlands,two kinds of hybrid constructed wetlands(surface-horizontal subsurface flow and surface-vertical subsurface flow constructed wetlands)with the same substrates and plants have been established, and operated continuously for one year using the same influent loading. The results show that both groups of the hybrid constructed wetlands can purify the polluted river efficiently. The surface-horizontal subsurface flow constructed wetland has better removing effects on BOD₅,SS,TN,and NH₃-N than the surface-vertical subsurface flow constructed wetland(p<0.05). The plants in surface-horizontal subsurface flow constructed wetland also has a better growth characteristics and removing capability for nitrogen and phosphorus. The presence of surface flow constructed wetland can not only avoid the clogging in the second stage-subsurface flow constructed wetland,but also effectively improve the removing capability for the total nitrogen from the system.

Key words: hybrid constructed wetlands, polluted river water, plant function

中图分类号: 

• X703