Highly heterogeneous interior structure of biofilm wastewater for enhanced pollutant removals

Bioresource Technology
Xianyang LiWei-Mon Yan

Abstract

Biofilm processes are widely used in wastewater treatment. The biofilm has highly heterogeneous interior structure, which can significantly affect the transport processes and the biological reactions over the biofilm. This study for the first time detailed the complicated velocity and concentration fields of substrate in a real biofilm structure. With a real biofilm interior being profiled and meshed to numerical solutions, the flow-through mode has significant distortion of inflow velocity fields and concentration distributions, which lead to enhanced biological reactions at regimes nearby major pores. Conversely, the crossflow mode depends weakly on the biofilm interior structure. The uniform biofilm model fails to describe the real biofilm processes. Future research needs based on real biofilm structures were discussed.

Citations

Mar 25, 2020·International Journal of Environmental Research and Public Health·Hong LiuNing Ding

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