强化空气扰动技术中表面活性剂的选择

为了提高空气扰动技术（air sparging，AS）的效果，做了一系列的实验，研究了表面活性剂强化空气扰动技术（surfactant-enhanced air sparging, SEAS）中表面活性剂的选择方法。结果表明：在气流运行方式以鼓泡为主要机制时，表面活性剂的加入强化了气泡的起泡性和稳泡性，使空气饱和度增加；在气流运行方式以微孔道为主要机制时，表面活性剂的加入因减小了表面张力而减小了空气驱替水所需的毛细压力，使空气饱和度增加。比较Tween-80、TritonX-100、SDS和SDBS在介质上的吸附损失，确定出在中砂中TritonX-100为优，在砾石中SDBS为优。

Selection of Surfactant in Surfactant-Enhance Air Sparging

In an attempt to enhance the effectiveness of air sparging, series experiments were designed to investigate the influencing factor of surfactant-enhance air sparging（SEAS） in order to conform the surfactant selection method. The results show that foamability and foam stability are decisive factors of air saturation in SEAS when the mode of injected air is bubbles, nevertheless, the value of capillary pressure caused by surface tension is the decisive factor of air saturation in SEAS when the mode of injected air is channels. By comparing the adsorption of Tween-80,TritonX-100,SDS and SDBS in medium, it found that TritonX-100 suits for medium sand and SDBS suits for gravel.