In this study a general dynamic biofiltration model to describe ammonia removal in a gas-phase biofilter is developed. The mathematical equations are based on discretized mass balances and detailed nitrification kinetics that include inhibitory effects caused by free ammonia (FA) and free nitrous acid (FNA). The model was able to predict experimental results operation under different loading rates (from 3.2 to 13.2 g NH3 h-1 m-3). In particular the model was capable of reproducing inhibition behavior caused by high inlet ammonia concentrations. © 2005 Elsevier B.V. All rights reserved.
- Dynamic biofilter model
- inhibition kinetics