Groundwater and Solute Transport Modelling for Advanced Raccuremedial Technologies

摘要

Advanced Remedial Technologies are growing applications for the in situ treatment of contaminated groundwater. Field scale implementation of such technologies requires detailed design involving complex and versatile inputs. This can be achieved by using numerical groundwater flow and transport modelling, based on site-specific hydrogeology and contaminant plume characteristics. Pump and Treat and Hydraulic Containment are common features in numerical groundwater modelling studies. But it is less widely known that other more advanced remedial techniques can also be designed using finite element or finite difference groundwater and solute transport models. In general, remediation models have many advantages. Based on model simulations decision makers can select, in a quantitative way, the most appropriate cost-effective remediation design and the most sustainable remedial solution according to site-specific conditions. The remediation model can incorporate further variations of parameters over time, resulting in precise optimised models that are representative of real phenomenon. This way they can provide adequate quantified solutions to future problems. In this paper, combinations of groundwater flow modelling, particle tracking and solute transport modelling are used to illustrate the modelling approach for the design of different advanced remedial technologies like groundwater circulation wells (GCWs) and permeable reactive barriers (PRBs).