Simulation of reactive processes related to biodegradation in aquifers 1. structure of the three-dimensional reactive transport model

摘要

The reactive transport model TBC(transport, biochemistry, and chemistry)numerically solves the equations for reactive transport in three-dimensional saturated groundwater flow. A finite element approximation and a standard Galerkin method are used. Solute transport is coupled to microbially mediated organic carbon degradation. Microbial growth is assumed to follow Monod- type kinetics. Substrate consumption and release of metabolic products is coupled to microbial growth via yield coefficients and stoichiometric relations. Additionally, the effects of microbial activity on selected inorganic chemical species the aquifer can be considered.