• 关键词：表面活性剂强化空气扰动  十二烷基苯磺酸钠  影响区域

• 基金项目：国家高技术研究发展计划(863)项目(No.2008AA06A410)

• 郑苇
• 吉林大学环境与资源学院, 长春 130026

• 赵勇胜
• 吉林大学环境与资源学院, 长春 130026

• 秦传玉
• 长春理工大学化学与环境工程学院, 长春 130026

• 王冰
• 吉林大学环境与资源学院, 长春 130026

• 屈智慧
• 吉林大学环境与资源学院, 长春 130026

• 马白文
• 吉林大学环境与资源学院, 长春 130026

• 摘要：为了强化空气扰动技术(AirSparging,AS)的处理效果,通过向不同介质的地下水中添加表面活性剂(十二烷基苯磺酸钠,SDBS),考察表面活性剂强化空气扰动技术对曝气影响区域的影响.实验结果表明:当介质为砾石时,加入表面活性剂后影响区域没有明显变化;当介质为粗砂时,用500mg·L^-1SDBS溶液饱和时的空气扰动影响区域为用蒸馏水饱和时的1.3倍.另外,当用1000mg·L^-1SDBS溶液饱和非均质介质时,若非均匀介质的渗透系数分别为6.4×10^-3m·s^-1和8.1×10^-4m·s^-1,曝入空气可以进入低渗透性介质.研究结果对SEAS技术的应用有一定的参考价值.

• Abstract：In an attempt to enhance the treatment effect of air sparging through adding sodium dodecylbenzene sulfonate (SDBS) into groundwater,the influence zone's effect on surfactant-enhanced air sparging (SEAS) in different media was investigated. The results showed that when media was gravel,the influence zone was not changed significantly by adding surfactant;when the media was coarse sand,the air sparging influence zone saturated by 500 mg·L^-1SDBSsolution was 1.3 times larger than that saturated by distilled water. Additionally,when the heterogeneous medium was saturated by 1000 mg·L^-1 SDBSsolution and the hydraulic conductivities were 8.1×10^-4 m·s^-1 and 6.4×10^-3 m·s^-1,the sparging air could enter the less permeable medium. The experimental results are relevant for the application of surfactant-enhanced air sparging.

• Key words：SEAS  SDBS  influence zone

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