云南昆明人工湿地冬季运行情况分析

Operation of a Kunming Constructed Wetland in Winter

分析了位于滇池附近的某人工湿地在冬季的运行情况,该湿地植物量为茭草9.53t/a,芦苇5.03t/a。将枯萎的植物收割后,新生的植物使得湿地仍有较好的污染物去除效果,对氨氮、总氮、总磷、COD和SS的平均去除率分别为52.2%、45.3%、46.4%、43.2%和68.4%,且能削减85%以上的污染负荷。

The paper documents the operation in winter of a constructed wetland beside the Dianchi Lake. The plant mass in the wetland is approximately 9.53 tons/year for Zizania caduciflora and it is 5.03 tons/year for Phragmites austrails. After the harvest of withered plants, the newly grown plant can still efficiently remove pollutants. The average removal efficiencies for ammonia nitrogen, total nitrogen, total phosphorus, COD and SS are 52.2%, 45.3%, 46.4%, 43.2% and 68.4% respectively. However more than 85% of the pollutant load in the influent are removed by the wetland due to the loss of wastewater flow.