泰兴市非饱和带与饱和带间固液界面传质模型的推导  

Derivation of solid-liquid interfacial mass transfer model between unsaturated zone and saturated zone in Taixing

作　　者：高琪 王海芳 吕溥 李金惠[3] 李鑫 GAO Qi;WANG Haifang;LYU Pu;LI Jinhui;LI Xin(School of the Environment and Safety Engineering,North University of China,Taiyuan Shanxi 030051,China;School of Environment,Tsinghua University,Beijing 100084,China;Basel Convention Regional Centre for Asia and the Pacific,Tsinghua University,Beijing 100084,China)

机构地区：[1]中北大学环境与安全工程学院,太原030051 [2]清华大学环境学院,北京100084 [3]清华大学巴塞尔公约亚太区域中心,北京100084

出　　处：《环境保护科学》2024年第2期154-160,共7页Environmental Protection Science

基　　金：国家科技重大专项课题(2018YFC1801104)。

摘　　要：非饱和带与饱和带紧密相联,建立两者交界处的固液界面传质模型,可以为非饱和带耦合饱和带模型提供一定理论基础,对更好地预测地下水污染趋势也非常有意义。文章以江苏省泰兴市为研究对象,将吸附与解吸、颗粒薄膜扩散、分配作用、稀释作用4种固液界面反应和非饱和带、饱和带的特性结合,推导出将非饱和带与饱和带联系在一起的固液界面传质模型。使用Matlab模拟模型参数改变时,地下水中污染物浓度的变化。结果表明,该模型是可行的,但是污染场地、污染物种类可能会对模型模拟结果造成影响。Unsaturated zone and saturated zone are closely related,and the establishment of solid-liquid interface mass transfer model at the junction of them can provide a theoretical basis for unsaturated zone coupling saturated zone model,and is also meaningful for better predicting groundwater pollution trend.Taking Taixing,Jiangsu Province as the research object,four kinds of solid-liquid interfacial reactions,namely adsorption and desorption,particle film diffusion,distribution and dilution were combined with the characteristics of unsaturated zone and saturated zone.A solid-liquid interfacial mass transfer model was derived which linked the unsaturated zone and saturated zone together.Matlab was used to simulate the change of pollutant concentration in groundwater when model parameters change.The results showed that the model was feasible,while the polluted sites and pollutant types may affect the simulation results.

关 键 词：固液界面 传质模型 非饱和带 饱和带 模型参数 

分 类 号：X523[环境科学与工程—环境工程]