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| 气相抽提去除红壤中挥发性有机污染物的去污机理探讨 | |
| 引用本文： | 周友亚,贺晓珍,李发生,侯红,汪莉,李可及,谷庆宝.气相抽提去除红壤中挥发性有机污染物的去污机理探讨[J].环境化学,2010,29(1). |
| 作者姓名： | 周友亚 贺晓珍 李发生 侯红 汪莉 李可及 谷庆宝 |
| 作者单位： | 1. 中国环境科学研究院土壤污染与控制研究室,北京,100012 2. 中国环境科学研究院土壤污染与控制研究室,北京,100012;北京科技大学土木与环境工程学院,北京,100083 3. 北京科技大学土木与环境工程学院,北京,100083 |
| 基金项目： | 十一五科技支撑计划项目(No.2007BAC16B06);;环保公益性行业科研专项(200809095);;科研院所基本科研业务专项(No.2007KYYW39,No.2007KYYW03)资助 |
| 摘 要： | 通过探讨土壤气相抽提去除红壤中挥发性有机污染物的去污机理,建立了一维稳态条件下污染物在土壤多孔介质中传质的总微分方程,分别求出了平衡模型和动力学模型的解析解和数值解,并用实验结果对平衡模型和动力学模型进行了模拟和验证.实验结果和模型模拟结果表明理论模型与实验结果吻合良好,平衡模型和动力学模型在描述污染物在土柱通风过程中的传质时,分别适用于不同的阶段.在通风初期平衡模型能够很好地描述实验结果,而随着时间的推移,平衡模型的预测曲线逐渐偏离数据点,到了通风中后期,只有动力学模型才能够较好地描述和预测实验结果. |
| 关 键 词： | 土壤气相抽提 红壤 苯 传质模型 |
DECONTAMINATION MECHANISM OF THE VOLATILE ORGANIC COMPOUND REMOVAL FROM RED EARTH BY SOIL VAPOR EXTRACTION |
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| ZHOU You-ya,HE Xiao-zhen,LI Fa-sheng,HOU Hong,WANG Li,LI Ke-ji,GU Qing-bao.DECONTAMINATION MECHANISM OF THE VOLATILE ORGANIC COMPOUND REMOVAL FROM RED EARTH BY SOIL VAPOR EXTRACTION[J].Environmental Chemistry,2010,29(1). | |
| Authors: | ZHOU You-ya HE Xiao-zhen LI Fa-sheng HOU Hong WANG Li LI Ke-ji GU Qing-bao |
| Affiliation: | 1 Department of Soil Pollution Control;Chinese Research Academy of Environmental Sciences;Beijing;100012;China;2 School of Civil and Environmental Engineering;University of Science and Technology Beijing;100083;China |
| Abstract: | Soil Vapor Extraction(SVE)has been widely used to remove volatile organic compounds (VOCs) from unsaturated soil.It is safe,economical,and highly efficient.In this paper,a total differential equation of the mass transfer in soil porous media under one-dimensional steady-state has been established,followed by the decontamination mechanism study of VOCs removal from red earth through SVE.Then analytic and numerical solutions were acquired for balanced and kinetic models,respectively.Results of the experiments... |
| Keywords: | soil vapor extraction red earth benzene mass transfer model |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
