A-Conc - 1D-3D Groundwater Mass Transport

Modelling of contaminant transport by analytical methods has limitations in the quantity of parameter zones and the complexity of boundaries. However, it includes a number of advantages, compared to numerical models, such as absence of numerical dispersion and short time for model setup.

A-Conc is commonly used for:
• Groundwater quality impact assessments from waste disposals, spills, ponds and other actual or potential contamination sources;
• Design of seepage barriers for groundwater protection;
• Interpretation of mass-transport parameters from field tracer tests and sorption/diffusion laboratory tests;
• Prediction of water quality during water supply borefield operation;
• Hydrogeology assessments for design of underground waste disposals, including radionuclide waste disposals design.

A-Conc module includes solutions for both porous media and fractured aquifer systems with double porosity storage.

The following processes can be simulated:
• Piston flow (convective contaminant transport in groundwater);
• Dispersion (time-constant and time-variable);
• Diffusion;
• Decay; and
• Sorption (linear/non-linear, equilibrium/non-equilibrium).

Contamination sources can be input in linear, areal or volumetric shapes and modelled as time-constant or pulse.