  Standard methods for modeling anaerobic digestion processes assume
homogeneous conditions inside the tank and thus suffer from the negligence of
hydrodynamics. In this work, we present the software toolbox Coupled
Hydrodynamics and Anaerobic Digestion (CHAD), a novel parallelized solver that
is capable of utilizing CFD results as the basis for Anaerobic digestion model
No.1 (ADMno1) simulations. CHAD uses a particle-based Lagrangian CFD solver
i.e., DualSPHysics (DSPH) as input and provides for a parallelized, C++ code
implementation of the standard ADMno1. This paper demonstrates a conceptual and
numerical verification of the toolbox and outlines the future pathway to
enhance the approach.
