Validation of a multi-phase plant-wide model for the description of the aeration process in a WWTP.
Keywords: 
Liquid-gas transfer modelling.
Mathematical modelling.
Plant-wide modelling.
Water chemistry.
Issue Date: 
2018
Publisher: 
Elsevier
ISSN: 
0043-1354
Citation: 
Lizarralde, I., Fernández-Arévalo, T., Beltrán, S., Ayesa, E., & Grau, P. (2018). Validation of a multi-phase plant-wide model for the description of the aeration process in a WWTP. Water research, 129, 305-318.
Abstract
This paper introduces a new mathematical model built under the PC-PWM methodology to describe the aeration process in a full-scale WWTP. This methodology enables a systematic and rigorous incorporation of chemical and physico-chemical transformations into biochemical process models, particularly for the description of liquid-gas transfer to describe the aeration process. The mathematical model constructed is able to reproduce biological COD and nitrogen removal, liquid-gas transfer and chemical reactions. The capability of the model to describe the liquid-gas mass transfer has been tested by comparing simulated and experimental results in a full-scale WWTP. Finally, an exploration by simulation has been undertaken to show the potential of the mathematical model.

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