This study deals with partial nitrification in a sequencing batch reactor (PN-SBR) treating raw urban landfill leachate. In order to enhance process insight (e.g. quantify interactions between aeration, CO2 stripping, alkalinity, pH, nitrification kinetics), a mathematical model has been set up. Following a systematic procedure, the model was successfully constructed, calibrated and validated using data from short-term (one cycle) operation of the PN-SBR. The evaluation of the model revealed a good fit to the main physical-chemical measurements (ammonium, nitrite, nitrate and inorganic carbon), confirmed by statistical tests. Good model fits were also obtained for pH, despite a slight bias in pH prediction, probably caused by the high salinity of the leachate. Future work will be addressed to the model-based evaluation of the interaction of different factors (aeration, stripping, pH, inhibitions, among others) and their impact on the process performance.
Systematic model development for partial nitrification of landfill leachate in a SBR
R. Ganigué, E. I. P. Volcke, S. Puig, M. D. Balaguer, J. Colprim, G. Sin; Systematic model development for partial nitrification of landfill leachate in a SBR. Water Sci Technol 1 May 2010; 61 (9): 2199–2210. doi: https://doi.org/10.2166/wst.2010.979
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