A new general methodology for incorporating physico-chemical transformations into multi-phase wastewater treatment process models.
This paper introduces a new general methodology for incorporating physico-chemical and chemical transformations into multi-phase wastewater treatment process models in a systematic and rigorous way under a Plant-Wide modelling (PWM) framework. The methodology presented in this paper requires the selection of the relevant biochemical, chemical and physico-chemical transformations taking place and the definition of the mass transport for the co-existing phases. As an example a mathematical model has been constructed to describe a system for biological COD, nitrogen and phosphorus removal, liquid-gas transfer, precipitation processes, and chemical reactions. The capability of the model has been tested by comparing simulated and experimental results for a nutrient removal system with sludge digestion. Finally, a scenario analysis has been undertaken to show the potential of the obtained mathematical model to study phosphorus recovery.
CEIT and Tecnun (University of Navarra), Manuel de Lardizábal 15, 20018 San Sebastián, Spain. Electronic address: ilizarralde@ceit.es.
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Lizarralde
CEIT and Tecnun (University of Navarra), Manuel de Lardizábal 15, 20018 San Sebastián, Spain. Electronic address: tfernandez@ceit.es.
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Fernández-Arévalo
Pollution Research Group, School of Chemical Engineering, University of KwaZulu-Natal, Durban 4041, South Africa. Electronic address: brouckae@ukzn.ac.za.
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Brouckaert
modelEAU, Université Laval, Canada. Electronic address: Peter.Vanrolleghem@gci.ulaval.ca.
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Vanrolleghem
Water Research Group, Department of Civil Engineering, University of Cape Town, Rondebosch, 7700 Cape Town, South Africa. Electronic address: david.ikumi@uct.ac.za.
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Ikumi
Water Research Group, Department of Civil Engineering, University of Cape Town, Rondebosch, 7700 Cape Town, South Africa. Electronic address: george.ekama@uct.ac.za.
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Ekama
CEIT and Tecnun (University of Navarra), Manuel de Lardizábal 15, 20018 San Sebastián, Spain. Electronic address: eayesa@ceit.es.
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Ayesa
CEIT and Tecnun (University of Navarra), Manuel de Lardizábal 15, 20018 San Sebastián, Spain. Electronic address: pgrau@ceit.es.
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Grau
D057919:Biological Oxygen Demand Analysis; D006863:Hydrogen-Ion Concentration; D008962:Models, Theoretical; D009584:Nitrogen / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D012722:Sewage / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000191:economics / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
D009584:Nitrogen; D010758:Phosphorus; D012722:Sewage; D062065:Wastewater
Abiotic processes; Mathematical modelling; Plant-wide modelling; Water chemistry; pH calculation