Numerical simulations of heat migration in the packings of a waste-gas biofilter
废气生物过滤系统填料层热迁移数值模拟

A heat migration model for a waste-gas biofilter was set up based on a porous media volume-averaging model and a three-parameter model. By adopting the operator splitting algorithms, the Galerkin finite element method was employed to deduce the discrete equations. The calculated values of the one-dimensional model for heat migration within the packings in the biofilter for the treatment of hydrogen sulfide were in good agreement with the experimental data. The heat migration within the packings was correlated with air flow properties, metabolic energy, and heat conductivity of media. The heat migration rate increased with the increase of heat conductivity of media, air flow temperature, inlet concentration, and metabolic energy, while it decreased as the air flow rate increased.