固定水力负荷下人工湿地各单元净化污水效果研究

以东莞生态产业园内的人工湿地污水处理系统为研究对象，对比分析了系统内反硝化池、垂直流人工湿地、表面流人工湿地单元在高温期和低温期的污水净化能力，探讨了系统建成运行3年后，2013—2015年在固定水力负荷下的污水处理效果。结果表明，该人工湿地污水处理系统运行3年，净化能力保持稳定；相对于低温期，系统在高温期的污水处理效果不明显；反硝化池、垂直流人工湿地、表面流人工湿地各单元的污水处理能力不同，垂直流人工湿地对总磷、总氮的去除效果明显，反硝化池对氨氮的去除效果明显；表面流人工湿地相对于垂直流人工湿地，对各项水质指标值的去除效果不明显。作为人工湿地污水处理系统，应当重视表面流人工湿地对污水净化效果的影响。

The Research on Each Unit of Constructed Wetland Purification on Waste Water under Fixation Hydraulic Loading

To investigate the effects of constructed wetland waste water purification system under fixation hydraulic loading after activating three years in Guangdong Dongguan Eco- Industrial Park, the study analyzed the constructed wetland which was composed of denitrification tank, vertical flow wetland, and surface flow wetland on the capacity of waste water purification under high-temperature and low-temperature. The results indicated that the constructed wetland was running effectively after activating three years. Under high-temperature, the ability of waste water purification of the constructed wetland was not as valid as low-temperature. The denitrification tank, vertical flow wetland, and surface flow wetland were not playing the same effects on purification waste water, vertical flow wetland wiped off TPand TN observably, denitrification tank wiped off NH4+-N observably. Surface flow wetland was not so markedly waping off sewage indicators as vertical flow wetland, surface flow wetland should be paying more attention to purification waste water.