Managing Injectability for High-Volume/Long-Duration In Situ Anaerobic Remediation Systems

摘要

Adequate organic carbon delivery is essential for establishment of reductive in situ reactive zones (IRZs) for anaerobic groundwater bioremediation. Traditional reductive IRZ injection strategies have focused on periodic, short-duration batch injections into a series of tightly spaced injection wells for amendment delivery. Recently, advancements have been made in delivery techniques to accommodate coverage over larger areas. These delivery-optimized IRZ systems have focused on supporting large volume/longduration injections facilitated by engineered hydraulic control within the target amendment delivery zone. These injection strategies can allow for more efficient delivery with less injection infrastructure. The long-duration (and sometimes even continuous) injection of amendment to facilitate effective delivery results in a greater chance for significant variations in hydraulic performance.