Abstract
Abstract Our understanding of biofilm function has been greatly increased with the aid of one-dimensional biofilm models. However, to date, there has been no evaluation of how the inclusion or exclusion of nitrite within nitrification/denitrification biofilm models may impact simulated prediction of the biofilm community composition and effluent water quality. As such, several variations of commonly assumed nitrification and denitrification models with a common set of kinetic parameters were simulated in a one-dimensional membrane-aerated biofilm model to identify the differences in simulation output with respect to simultaneous nitrification and denitrification. Our results indicated that the inclusion of nitrite as an intermediate affected the biofilm community composition, microbial activity, and effluent water quality. Even under circumstances when the predicted water quality results were similar, significant differences persisted in the microbial activity. For example, chemical oxygen demand (COD) re...
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