Modelling of nitrogen release from MBT waste.

The "LaNDy" model (landfill nitrogen dynamics model) is a new mathematical tool for the evaluation of the long-term behaviour of nitrogen in mechanical-biologically pretreated (MBP) waste. LaNDy combines a hydraulic model based on RICHARD's equation with one-dimensional heat flow in landfills, kinetics of biological degradation, gas diffusion, nitrification and denitrification. A suitable temperature-dependent N mineralisation sub-model was based on numerous data from the literature and own LSR-experiments.