反应器理论在复合垂直流构建湿地水流流态研究中的应用  

Application of the Reaction Theory to Flow Pattern on the Integrated Vertical Flow Constructed Wetland

作　　者：付贵萍[1] 吴振斌[1] 任明迅[1] 贺锋[1] Alex Pressl Reinhard Perfler 

机构地区：[1]中国科学院水生生物研究所淡水生态与生物技术国家重点实验室,武汉430072 [2]维也纳农业大学

出　　处：《环境科学》2002年第4期76-80,共5页Environmental Science

基　　金：国家杰出青年科学基金项目 (3992 5 0 0 7);欧盟国际科技合作项目 (ERBIC18CT96 0 0 5 9)

摘　　要：运用反应器理论研究了一种新型的复合垂直流构建湿地系统 (IVCW )的水流流态 ,由示踪剂试验得到水流停留时间分布 (RTD) ,从而确定了IVCW在水力负荷为 2 0 0～ 80 0mm/d时 ,停留时间为 1 9～ 3 5h ,并由RTD曲线的特征值确定IVCW的水流流态介于理想推流与完全混合流之间 ,同时应用离散流模型 ,不仅较好地模拟了IVCW的实际水流流态 ,还得到了水流的Peclect准数在 1 1～ 1 9之间 .This study was conducted to determine the flow pattern of the integrated vertical flow constructed wetland (IVCW) by using the reaction theory. The retention time distribution (RTD), obtained by tracer experiment, showed the retention time was between 19 and 35h under 200～800 mm/d hydraulic loading rate, and the actual flow pattern was between the ideal plug flow and continuous stirred flow based on the characteristic value of the RTD. Furthermore, the dispersed flow model was found adequate in simulating the actual flow pattern of the IVCW and the Peclect number was determined between 11 and 19.Comparison the planted and unplanted IVCW, the plant root was found favorable for the flow pattern to approximate the ideal plug flow.

关 键 词：反应器理论 水流流态 复合垂直流构建湿地 停留时间分布 离散流模型 理想推流 人工湿地 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]