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| 表面活性剂强化空气扰动修复氯苯污染含水层 | |
| 引用本文： | 秦传玉,赵勇胜,郑苇. 表面活性剂强化空气扰动修复氯苯污染含水层[J]. 地球科学, 2011, 36(4): 761-764. DOI: 10.3799/dqkx.2011.077 |
| 作者姓名： | 秦传玉 赵勇胜 郑苇 |
| 作者单位： | 1.长春理工大学化学与环境工程学院，吉林长春 130022 |
| 基金项目： | 国家高技术研究发展“863”计划项目(No.2008AA06A410) |
| 摘 要： | 通过一维砂柱实验研究了阴离子表面活性剂十二烷基苯磺酸钠(SDBS)对空气扰动技术(air sparging，AS)修复氯苯污染地下水的强化效果.结果表明，SDBS的加入降低了地下水的表面张力，减小了水气两相毛细压力，从而提高了地下水中的空气饱和度.当曝气量为100 mL/min，地下水的表面张力由72.2 mN/m降至49.5 mN/m时，地下水中空气饱和度由13.2%提高至50.1%，而后随着表面张力的进一步降低，空气饱和度不再提高，反而有小幅下降.通过污染物的去除实验发现，SDBS的加入大大提高了氯苯的去除率，且去除率的变化与空气饱和度的变化趋势基本相符.因此，表面活性剂的加入可以作为空气扰动技术一种十分有效的强化手段. |
| 关 键 词： | 表面活性剂强化 空气扰动 污染控制 空气饱和度 环境工程 |
| 收稿时间： | 2010-10-15 |
Remediation of Chlorobenzene Polluted Aquifer by Surfactant-Enhanced Air Sparging |
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| QIN Chuan-yu,ZHAO Yong-sheng,ZHENG Wei.School of Chemistry , Environmental Engineering,Changchun University of Science , Technology,Changchun ,China.College of Environment , Resources,Jilin University,Changchun ,China. Remediation of Chlorobenzene Polluted Aquifer by Surfactant-Enhanced Air Sparging[J]. Earth Science-Journal of China University of Geosciences, 2011, 36(4): 761-764. DOI: 10.3799/dqkx.2011.077 | |
| Authors: | QIN Chuan-yu ZHAO Yong-sheng ZHENG Wei.School of Chemistry Environmental Engineering Changchun University of Science Technology Changchun China.College of Environment Resources Jilin University Changchun China |
| Affiliation: | QIN Chuan-yu1,ZHAO Yong-sheng2,ZHENG Wei21.School of Chemistry and Environmental Engineering,Changchun University of Science and Technology,Changchun 130022,China2.College of Environment and Resources,Jilin University,Changchun 130026,China |
| Abstract: | The strengthening effect of anionic surfactant sodium dodecyl benzene sulfonate(SDBS) on air sparging(AS) was investigated using a series of one-dimensional column experiments.The results show that the addition of SDBS into groundwater lowered the groundwater surface tension,which in turn reduced the air entry capillary pressure.As a result,the air saturation in groundwater was increased accordingly.At the air injection rate of 100 mL/min,the surface tension reduction from 72.2 mN/m to 49.5 mN/m led to air ... |
| Keywords: | surfactant-enhanced air sparging pollution control air saturation environmental engineering. |
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