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A process for removing and disposing of or neutralizing volatile contaminants existing in the vadose zone of earth and also in a below ground aquifer. The process includes the injection of substantially oxygen free air into the aquifer to retard the formation of aerobic bacteria and injection of oxy

A process for removing and disposing of or neutralizing volatile contaminants existing in the vadose zone of earth and also in a below ground aquifer. The process includes the injection of substantially oxygen free air into the aquifer to retard the formation of aerobic bacteria and injection of oxygen rich air into the vadose zone to stimulate bacterial growth which aids contaminant recovery. Volatilized contaminants are pulled out of the soil through withdrawal wells which terminate in the vadose zone.

대표청구항 ▼

Apparatus for removing volatile contaminants located below ground level, said apparatus cmprising a withdrawal well terminating in a vadose zone above a below ground aquifer, a first conduit positioned in said withdrawal well and extending upwardly of ground level, first blower means positioned in f

Apparatus for removing volatile contaminants located below ground level, said apparatus cmprising a withdrawal well terminating in a vadose zone above a below ground aquifer, a first conduit positioned in said withdrawal well and extending upwardly of ground level, first blower means positioned in flow communication along said first conduit for pumping air and volatile contaminants out of said vadose zone, a second conduit positioned in a first air injection well terminating in said aquifer, second blower means in flow communication along said second conduit for pumping atmospheric air into said vadose zone to urge said volatile contaminants toward said withdrawal well, and sepoarator means positioned in flow communication along said second conduit downstream of said second blower means, said separator means for removing oxygen from said atmospheric air prior to pumping of deoxygenated air into said aquifer.