| 土壤中可挥发污染物抽气清除法的数值模拟 |
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| 引用本文： | 张丙印,王昆泰,师瑞锋.土壤中可挥发污染物抽气清除法的数值模拟[J].岩土力学,2004,25(4):544-548. |
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| 作者姓名： | 张丙印 王昆泰 师瑞锋 |
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| 作者单位： | 清华大学 水利水电工程系，北京 100084 |
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| 摘 要： | 抽气清除法(SVE)是最常用的清除土壤非饱和区中可挥发污染物的方法之一。介绍和分析了该法的基本原理和工艺过程，建立了描述该法中气体渗流场、污染物相间交换以及污染物随气流场运移3个主要过程的物理模型。分别采用Galerkin法和Laplace变换Galerkin法推导了模拟气体渗流场和污染物随气流运移过程的有限元数值模型，编制了三维有限元程序，给出了1个典型的三维计算实例。
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| 关 键 词： | 抽气清除法 可挥发污染物 有限元 数值模拟 |
| 文章编号： | 1000-7598-(2004)04-0544-05 |
| 收稿时间： | 2003-02-10 |
| 修稿时间： | 2003年2月10日 |
Numerical simulation for removal of volatile contamination using soil vapor extraction method |
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| ZHANG Bing-yin,WANG Kun-tai,SHI Rui-feng.Numerical simulation for removal of volatile contamination using soil vapor extraction method[J].Rock and Soil Mechanics,2004,25(4):544-548. |
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| Authors: | ZHANG Bing-yin WANG Kun-tai SHI Rui-feng |
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| Institution: | Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Soil vapor extraction (SVE) technology is one of the most useful methods to remove volatile organic compounds(VOCs) in unsaturated soil. The principle and technique of SVE are reviewed firstly. A mathematical model of SVE is then established to describe the three principal processes in SVE, namely gas flow in unsaturated soil, phase mass exchange and contaminant transport along with the gas flow. Numerical equations for simulating gas flow and contaminant transport are derived respectively using Galerkin technique and Laplace Transformation Galerkin Technique. Three dimensional finite element computing program is developed and typical three dimensional example is presented and discussed. |
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| Keywords: | soil vapor extraction (SVE) volatile organic compounds(VOCs) finite element method numerical simulation |
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