摘要
建立两种规模的水平潜流人工湿地模型,依托地下水数值模拟软件,对上进上出和上进下出的水流方式分别进行了模拟。采用虚拟示踪粒子的方法,追踪水流在湿地内的停留时间,从而计算出不同条件下湿地的水力效率,通过水力效率的计算结果分析进出水方式对不同规模湿地的影响程度。研究表明进出水口位置对湿地水力效率的影响程度σ与湿地长深比n有关,n越大,则σ越小,湿地水力学特性受进出水口位置的影响程度越小。因此,在工程应用中调整进出水方式应适度进行,过度优化可能导致工程造价和施工难度的增加。
Two different scale model of horizontal subsurface flow constructed wetland was established, based on numerical simulation software of groundwater. The flow way of top inlet-top outlet and top inlet-bottom outlet were simulated respectively. Then the method of virtual tracer particle was used to track the residence time of water flow in wetland to calculate the hydraulic efficiency of wetland on different conditions to analyze the influence degrees. The results indicated that the influence degree was related to the ratio of length to depth of wetland, the larger the ratio, the smaller the influence is. Therefore, it should be moderately to adjust in-outflow way, otherwise the project cost and construction difficulty may increase.
作者
冯赟昀
曹优明
杨司嘉
FENG Yunyun;AO Youming;YANG Sijia(Yellow River Engiiwering Consulting Co.,Ltd.,Zhengzhou 450003,China;Henan Engineering Research Center of Urban Water Resources and Environment,Zhengzhou 450003,China)
出处
《净水技术》
CAS
2019年第9期121-125,共5页
Water Purification Technology
关键词
水平潜流人工湿地
数值模拟
进出水
水力效率
不同规模
horizontal subsurface flow constructed wetland
numerical simulation
inflow and outflow
hydraulic efficiency
different scales
