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中文摘要：
采用生态湿地净化微污染水源水。结果表明，在水力负荷为450m^3／d的运行条件下，生态湿地净化系统对微污染水源水的净化效果较好，尤其是对NH4＋N、TP的平均去除率分别在40％和85％以上。由于进水CODMn值偏低，对CODMn的平均去除率只有12％。整个湿地系统出水CODMnNH4-N和TP浓度稳定达到《地表水环境质量标准》（GB3838-2002）中Ⅲ类水质的要求。但湿地系统对TN的去除效果相对较差，主要是因为湿地系统的反硝化能力较弱，出水TN主要以硝态氮为主。因此，需调整湿地结构来构建厌氧环境，以提高湿地系统对TN的去除率。
英文摘要：
The ecological wetland was used for purification of micro-polluted source water. The results show that with hydraulic loading of 450 m3/d, the ecological wetland has good purification efficiency of micro-polluted source water. The average removal rates of NH4＋ - N and TP are above 40% and 85% respectively, and the average removal rate of CODMn is only 12% due to its lower influent concentration. The concentrations of NH4＋ - N, TP and CODM, in the effluent meet Ⅲ criteria specified in the Environmental Quality Standards for Surface Water （GB 3838 -2002 ）. But the removal rate of TN is low because of weak denitrifieation in ecological wetland system. So wetland structure should be regulated to improve removal of TN.
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