| 不同基质与布水方案下人工湿地水分运移的模拟 |
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| 引用本文： | 戴梦玲, 陈孝兵, 王妍. 不同基质与布水方案下人工湿地水分运移的模拟[J]. 环境工程学报, 2015, 9(12): 5831-5836. doi: 10.12030/j.cjee.20151230 |
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| 作者姓名： | 戴梦玲 陈孝兵 王妍 |
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| 作者单位： | 1.河海大学水利水电学院, 南京 210098; 2.河海大学水文水资源与水利工程科学国家重点实验室, 南京 210098; 3.河海大学水文水资源学院, 南京 210098 |
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| 基金项目： | 国家自然科学基金资助项目(41401014) 中国博士后基金(2015M570402) |
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| 摘 要： | 以垂直潜流人工湿地为背景,采用饱和-非饱和土壤水分运动Richards方程,基于HYDRUS-3D模型对2种具体土质、不同布水方案下土壤水分运移情况进行了数值模拟,并依据相关数值结果进行水力停留时间的计算.模拟结果显示,土质的渗透性对表层土壤含水量影响很大;相同布水总量下,布水次数增加将导致砂土表层土壤含水量峰值降低、土壤水力停留时间减小.研究可为潜流人工湿地基质、布水模式的选择提供相关科学依据.
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| 关 键 词： | 人工湿地 水动力过程 模拟 水力停留时间 |
| 收稿时间： | 2015-08-25 |
Simulation of water transportation in constructed wetland with different matrices and inflow scenarios |
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| Dai Mengling, Chen Xiaobing, Wang Yan. Simulation of water transportation in constructed wetland with different matrices and inflow scenarios[J]. Chinese Journal of Environmental Engineering, 2015, 9(12): 5831-5836. doi: 10.12030/j.cjee.20151230 |
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| Authors: | Dai Mengling Chen Xiaobing Wang Yan |
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| Affiliation: | 1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; 2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; 3.College of Hydrolody and Water Resources, Hohai University, Nanjing 210098, China |
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| Abstract: | On the background of vertical subsurface-flow constructed wetland, Richards' equation was used to desrcibe the movement of saturated-unsaturated soil water, and the transport of soil water was simulated in HYDRUS-3D with two matrices and different inflow scenarios. Hydraulic residence time was computed according to the relevant simulation result. The simulation result shows that the water content of surface soil is greatly influenced by its permeability, and with the same quantity of water, the increasing of inflow frequency leads to lower peaks of surface soil water content in sand and shorter hydraulic retnetion time in loam. The simulation result from HYDRUS can serve as a scientific basis for the choosing of soil matrices and inflow scenarios in constructed wetland. |
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| Keywords: | constructed wetlands hydrodynamic process simulation hydraulic retnetion time |
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