Section 14
Chapter 13,118

Efficiency of air inlet wells in vapor extraction systems

Ross, B.L., N.

Water resources research 30(2): 581-584


ISSN/ISBN: 0043-1397
DOI: 10.1029/93wr02902
Accession: 013117746

Vapor extraction is often used to remove volatile organic chemicals from unsaturated sods. Air inlet wells, which are left open to atmospheric pressure, are commonly installed around the extraction well to accelerate the removal of volatile contaminants. We employ the method of images in radial coordinates and the principle of superposition to develop an analytical solution for calculating the amount of air drawn in by inlet wells evenly spaced around an extraction well. Field tests of proposed vapor extraction systems can be compared with this solution to help evaluate whether gas flow will permeate the entire soil or will be concentrated in localized channels.

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