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| Laboratory study for air flow during air sparging |
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Abstract This paper presented the results of a series of laboratory studies on air sparging (AS) within a three-dimensional aquifer simulation tank. The study investigated the effects of particle size and air injection pressure on influence radius (ROI), gas flow rate and patterns during air sparging. The test results showed that improving injection pressure could increase ROI during AS. Air mass flow rate increased linearly with the increase of injection pressure after exceeding a certain sparging pressure. The air flow patterns were determined by the sizes of porous media regardless of the injection pressure. The shape of air flow was conical when particle size was 1-2mm, and parabolic when particle size was 4-8mm.
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Received: 17 February 2014
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