人工湿地技术在我国北方地区的试验研究

Experimental Study of Constructed Wetland Technology in China Northern Area

本研究在邯郸构建了二级串联人工湿地系统，进行污水净化试验．试验结果表明，构建的人工湿地系统对污染物去除效果良好，出水水质较稳定，系统对COD、TN、TP的去除率分别在25％～65％、29％-94％、30％-80％之间．在相同的水力负荷下，植物生长状况良好的人工湿地污水处理效果明显高于植物生长状况差的人工湿地．潜流人工湿地子系统对污水的净化效果和稳定性明显好于表层人工湿地系统．人工湿地处理污水受温度和季节影响较大，在温度较高的夏季去除率远远高于温度较低的冬季．

The test on treating pollution water of Handan by using a two - grade series constructed wetland system. The results show that the con- strutted wetland has a purifying effect perennial, the removal rate of COD, TN and TP are 25% -65% , 29% -94% and 30% -80%. Under the same hydraulic loading, the wetland with relatively better growing plants demonstrated higher pollutants removal efficiency than that with relatively worse growing plants. The removal effect and stability of subsurface flow wetland is better than surface constructed wetland＇s. The removal effect showed certain seasonal variation, the rate in summer better than in cold winter.