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| 通风速率对土壤中四氯化碳污染物去除效率的影响研究 | |
| 引用本文： | 卢中华,裴宗平,鹿守敢,王岩,胡佳佳. 通风速率对土壤中四氯化碳污染物去除效率的影响研究[J]. 农业环境科学学报, 2011, 30(1) |
| 作者姓名： | 卢中华 裴宗平 鹿守敢 王岩 胡佳佳 |
| 作者单位： | 1. 中国矿业大学江苏省资源环境信息工程重点实验室,江苏徐州,221116;中国矿业大学环境与测绘学院,江苏徐州,221116 2. 徐州市环境保护科学研究所,江苏徐州,221116 3. 中国矿业大学环境与测绘学院,江苏徐州,221116 |
| 基金项目： | 国家自然科学基金资助项目(40373044) |
| 摘 要： | 某重要岩溶地下水源地受到四氯化碳的严重污染,为此采用土柱通风试验模拟土壤气相抽提(SVE)净化四氯化碳污染物的过程,对通风速率为40mL·min-1和70mL·min-1两种条件下土壤四氯化碳的去除过程进行了试验模拟研究。结果表明,土柱通风能有效去除土壤中的四氯化碳污染物,通风条件下土壤中四氯化碳的去除过程符合一级反应动力学,土壤中四氯化碳浓度C的对数值ln[C(/μg·L-1)]与时间t呈良好的线性关系,相关系数均在0.95以上。通风速率为40mL·min-1的土柱A各取样口四氯化碳去除反应速率常数k值在0.0132～0.0155h-1之间,通风速率为70mL·min-1的土柱B各取样口k值在0.0178～0.0222h-1之间,说明增大通风速率能提高土壤中四氯化碳污染物的去除效率。 |
| 关 键 词： | 通风速率 四氯化碳 动力学 反应速率常数 |
Effects of Airflow Velocity on the Removal Efficiency of Carbon Tetrachloride from Polluted Soil |
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| LU Zhong-hua,PEI Zong-ping,LU Shou-gan,WANG Yan,HU Jia-jia. Effects of Airflow Velocity on the Removal Efficiency of Carbon Tetrachloride from Polluted Soil[J]. Journal of Agro-Environment Science( J. Agro-Environ. Sci.), 2011, 30(1) | |
| Authors: | LU Zhong-hua PEI Zong-ping LU Shou-gan WANG Yan HU Jia-jia |
| Affiliation: | LU Zhong-hua1,2,PEI Zong-ping1,LU Shou-gan3,WANG Yan2,HU Jia-jia1,2(1.China University of Mining and Technology,Jiangsu Key Laboratory of Resources and Environmental Information Engineering,Xuzhou 221116,China,2.School of Environment and Spatial Informatics,China University of Mining and Technology,3.Xu zhou Research Institute of Environmental Protection,China) |
| Abstract: | A main Karst groundwater supply source in North China was polluted by carbon tetrachloride.Researches at home and abroad proved that soil vapor extraction(SVE) was an effective in-situ remediation technology for groundwater pollution.In this paper,two soil columns of pilot scale were designed to simulate the SVE process and study the removal of carbon tetrachloride from soil.The airflow velocities of two soil columns were 70 mL per minute and 40 mL per minute respectively.The experimental results showed tha... |
| Keywords: | airflow velocity carbon tetrachloride kinetics reaction rate constant |
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