Effects of surfactant-enhanced air sparging on the influence zone in treatment of contaminated groundwater
表面活性剂强化空气扰动修复污染地下水影响区域研究

In an attempt to enhance the effect of air sparging, series experiments were designed to investigate the influence zone of surfactant-enhance air sparging(SEAS) in homogeneous medium and heterogeneous medium using sodium dodecylbenzene sulfonate (SDBS). The tests showed that air sparging influence zone was increased significantly with adding surfactant for coarse sand. However, the influence zone was not changed significantly with adding surfactant for gravel. Additionally, the sparging air could get into low permeable medium with the hydraulic conductivity of 8.1×10-4 m s-1with adding SDBS 1000mg/L when hydraulic conductivity of high permeable medium was 6.4×10-3 m s-1. These experimental results provide reference for the field application in surfactant-enhance air sparging.