Recent studies have shown that enhanced reductive dechlorination (ERD) in clay tills is challenging and its success depends on both site specific and design parameters. Therefore a practical tool has been developed in order to assess mass removal and contaminant mass flux to the aquifer during ERD in clay tills, depending on these controlling parameters. This Excel-based tool can be used by consultants and authorities for several purposes:
• Decision-making support to select remediation technology
• Optimization of remediation design
• Planning of risk management during remediation
• Input for other decision-support tools (LCA, environmental economics)
A shorttechnical note provides a brief introduction to the main concepts regarding enhanced reductive dechlorination in clay till as well as a brief description of the framework for developing the practical tool.
This practical tool has been developed in collaboration between DTU Environment and Orbicon A/S, as part of the REMTEC project (Innovative REMediation and assessment TEChnologies for contaminated soil and groundwater) www.remtec.dk
This work was supported by REMTEC, Innovative REMediation and assessment TEChnologies for contaminated soil and groundwater, Danish Council for Strategic Research. We also wish to acknowledge the Capital Region of Denmark and the Region of Southern Denmark for collaboration on different projects that were used as input for the developed practical tool. We also thank Dr. Neil Durant of Geosyntec Consultants for providing constructive feedback on this work. Finally, we wish to thank the Information Center on Contaminated Sites / Danish Regions for accommodating this work on their website and providing technical support.