复合人工湿地对滏阳河河水净化的试验研究

采用复合型人工湿地模型对支漳河流域滏阳河中城市污水进行处理,对水中pH值、浊度、CODmn、TN、TP、NH+4-N、NO-3-N、NO-2-N等水质指标进行了检测,实验表明,该人工湿地模型稳定运行后净化效果良好,湿地对浊度、CODmn、TN、TP、NO-3-N、NO-2-N的平均去除率达到91%、50%、36%、91%、35%和89%。出水水质均可达到GB 18918—2002的二级排放标准,有的可达到一级A排放标准。该模型可以在岳城水库水源地水生态环境综合治理中采用,应用中建议给模型安装曝气充氧装置,以降低基质中胞外聚合物累积而造成的堵塞作用。

Experimental study on purification of Fuyanghe River water with integrated constructed wetland

The urban sewage flowed into Fuyanghe River of Zhizhanghe River Watershed is treated with an integrated constructed wetland model， and then the water quality indexes such as PH， turbidity， CODmm， TN， TP， NH+4-N、NO-3-N、NO-2N， etc. of the water are tested. The experiment result shows that the effect of the purification is better when the stable operation of the integrated constructed wetland model， i.e. the average rate of the removal of turbidity， CODmn， TN， TP， NO-3-N、NO-2-N made by the wetland model have reached up to 91%， 50%， 36%， 91%， 35% and 89%. The model outflow water quality can be reached to the Class II of the wastewater discharge standard specified in the “Urban Sewage Treatment Plant Pollutant Discharge Standards” GB 18918—2002 and a part of it can be reached to the Class I. Therefore， this model can be applied to the water eco-environment comprehensive improvement of the water source of Yuecheng Reservoir. Finally， the wetland model is suggested to be equipped with an aerating facility， so as to lower the blocking effect caused by the accumulation of the extracelluler polymer substances in the base materials therein.