Tracer studies performed in two aerated facultative lagoons indicate some bypass and an overall hydraulic regime close to completely-mixed. Results were used to calibrate a hydraulic model based on the tanks-in-series approach. The hydraulic model was combined with a simple “death-regeneration” biokinetic model to simulate seasonal nitrification as observed over a three year period. Modifications were made to the hydraulic model to represent the effect of baffle installations to 1) eliminate bypass and 2) impose a plug-flow regime. Simulation results indicate there is some gain to eliminating bypass but that imposing a plug-flow regime would increase biomass washout rates and hinder nitrification.
Effect of baffles on nitrification in aerated facultative lagoons in a cold climate
D. Houweling, F. Chazarenc, R. Leduc, Y. Comeau; Effect of baffles on nitrification in aerated facultative lagoons in a cold climate. Water Sci Technol 1 June 2007; 55 (11): 73–79. doi: https://doi.org/10.2166/wst.2007.345
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