人工湿地水力学特性研究及进展

人工湿地水力学特性研究的意义在于揭示湿地处理污水的内在机理,了解人工湿地水流流态和污染物降解行为等错综复杂的反应过程,可对湿地的设计、运行和出水水质预测做出完全准确的计算和评价。人工湿地水力学特性研究内容包括水力停留时间、水力传导率、容水量、水量流态等因素,研究方法为采取示踪剂试验,常用的示踪剂为NaCl、红色玫瑰精染料(RWT)及同位素。研究植物对湿地水力学特性的影响是当前的研究热点之一。

Advances in Researches on Characterization of Hydrodynamics of Constructed Wetland

The implications of characterization of hydrodynamics of constructed wetland are to reveal the Inherent mechanism of sewage treatment,and to understand the complicated reaction processes of water flow and decomposition of pollutants.The design,operation and quality of discharge water can therefore be accurately calculated and evaluated.Characterization of hydrodynamics of constructed wetland includes hydraulic retention time,hydraulic conductivity,water capacity and flow regime etc.Tracer test is employed,usually with NaCl,Rhodamine WT and isotopes as tracers.The impact of vegetation on hydrodynamic characteristics of constructed wetland is currently one of the hot spots of studies.