垂直流人工湿地净化湖水的除磷研究

将欧盟资助项目研究成果应用于实际工程中，以垂直流人工湿地净化湖水的应用工程作为研究对象，通过实例总结系统的除磷效能，考察垂直流人工湿地对湖水净化后水质维护效果与应用前景，检验参数的合理性，并分析相关原因。结果表明，两种功能的垂直流人工湿地均达到了设计的除磷效果，在水力负荷为1000mm／d～2000mm／d时，两系统的平均去除率分别为TP：27．3％和49．1％，磷酸盐：20．1％和34．8％。湖水经湿地净化后能维持较好的水质，TP能达到地表水Ⅲ类标准。

Phosphorus Removal in Lake by Vertical Flow Constructed Wetland

Sponsored by European Unite project, research of vertical flow constructed wetland （VFCW） was con-ducted to optimize the operating parameters. The result obtained from pilot tests was used in the design of practical projects, including in a water- supply VFCW and a water- cycling VFCW, based on which, the operational efficiency was systematically evaluated through long-term performance. Results of applied studies indicated that the performance of the two VFCWs perfectly satisfied originally designed purposes. The average efficiencies in pollutants removal by water - supply VFCW and water cycling VFCW were TP： 27.3% and 49. 1% , phosphate： 20. 1% and 34. 8% under the hydraulic load of 1000mm/d to 2000mm/d respectively. Long- term performance of VFCWs greatly increased the lake water quality which the total phosphorus met or even better than the third level of the surface water quality standard.