【摘要】 在野外构建芦竹水平潜流人工湿地,考察其对西南山地地区小城镇微污染河水的净化效果。结果表明,在进水流量为0.75 m3/d、HRT为2 d的条件下,芦竹人工湿地对河水有较好的净化效果,对CODMn、TN、NH4+-N及TP的平均去除率分别为34.1%、63.5%、73.4%、70.7%,而空白人工湿地的平均去除率仅为22.2%、32.7%、52.2%、36.6%,说明芦竹的存在促进了人工湿地对微污染河水的净化效果。更多还原

【Abstract】 In order to investigate the purification efficiency of micro-polluted river water in small southwestern cities and towns by constructed wetlands,two horizontal subsurface-flow constructed wetlands with and without Arundo donax were constructed.The results showed that when the inflow was 0.75 m3/d,and the hydraulic retention time was 2 d,the average removal rates of CODMn,TN,NH+4-N and TP were 34.1%,63.5%,73.4% and 70.7% in the wetland with Arundo donax,and were 22.2%,32.7%,52.2% and 36.6% in the unplanted wetland.The existence of Arundo donax in wetland could improve the purification efficiency of the micro-polluted river water.更多还原