表面活性剂强化空气扰动修复污染地下水影响区域研究  

Effects of surfactant-enhanced air sparging on the influence zone in treatment of contaminated groundwater

作　　者：郑苇[1] 赵勇胜[1] 秦传玉[2] 王冰[1] 屈智慧[1] 马白文[1] 

机构地区：[1]吉林大学环境与资源学院,长春130026 [2]长春理工大学化学与环境工程学院,长春130026

出　　处：《环境科学学报》2011年第1期102-106,共5页Acta Scientiae Circumstantiae

基　　金：国家高技术研究发展计划(863)项目(No.2008AA06A410)~~

摘　　要：为了强化空气扰动技术(Air Sparging,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.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^-1SDBS solution was 1.3 times larger than that saturated by distilled water. Additionally,when the heterogeneous medium was saturated by 1000 mg·L-1 SDBS solution and the hydraulic conductivities were 8.1×10^-4 m·s^-1and 6.4×10^-3 m·s^-1the sparging air could enter the less permeable medium. The experimental results are relevant for the application of surfactant-enhanced air sparging.

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 

分 类 号：X523[环境科学与工程—环境工程]