| 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 |
| 摘要点击 2416 全文点击 2853 投稿时间：2001-07-21 修订日期：2001-10-14 |
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| 中文关键词 复合垂直流构建湿地 停留时间分布 离散流模型 理想推流 |
| 英文关键词 integrated vertical flow constructed wetland retention time distribution dispersed flow model ideal plug flow |
| DOI 10.13227/j.hjkx.20020416 |
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| 中文摘要 |
| 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200～800mm/d时,停留时间为19～35h,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11～19之间.通过有植物与无植物系统的对照发现植物根系有利于IVCW的水流流态接近理想推流状态. |
| 英文摘要 |
| 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. |
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