Comparison of injection well patterns for remediating benzene‐contaminated groundwater

Ten alternative injection well patterns and a no‐action plan were evaluated for bioremediating benzene‐contaminated groundwater. Evaluations were made for a silty‐sand aquifer using a contaminant fate and transport model. Wells injected water containing 8 mg/L dissolved oxygen. The study's objective was to rank the alternative schemes based upon mass of contaminant removed and area of residual groundwater contamination. Interior configurations with injection wells at areas of high benzene concentration outperformed the other remediation schemes. Interior wells supply oxygen quickly to areas of a plume where it is most needed. Alternative configurations rely upon groundwater to transport the oxygen, an inefficient process. No action was the least effective strategy

Aquifer · Benzene · Contaminated groundwater · Contamination · Environmental remediation · Geotechnical engineering · Groundwater · Groundwater remediation · Plume · Remedial action · Chemistry · Ecology · Environmental Chemistry · Environmental Engineering · Environmental Science · Geology · Groundwater flow and contamination studies · Microbial bioremediation and biosurfactants · Toxic Organic Pollutants Impact