对一种新型的垂直流人工湿地系统的水流特性进行了研究 .考察了系统的运行状况及介质中滞留区的分布范围 ,并且运用化学工程中反应器理论 ,采用示踪剂试验的方法得到了垂直流人工湿地系统的停留时间分布与污水的实际停留时间 .根据水流停留时间分布函数对系统实际液流流态进行了数学模拟 ,提出二级串联的理想完全混合反应器 (CSTR)模型能够较好地模拟垂直流人工湿地系统中水流的流动形态 The flow characteristics of a new type of vertical flow constructed wetland system are studied.The operating conditions of the system and the distribution range of the stagnant zone in the medium are investigated, and by using the reactor theory in chemical engineering and using the tracer test method The distribution of residence time and the actual residence time of the vertical flow constructed wetland system, the mathematical model of the actual flow pattern of the system was established according to the residence time distribution function of water flow, and the proposed two-stage ideal perfect mixed reactor (CSTR) Goodly simulate the flow pattern of vertical flow constructed wetland system