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Modelization of Nutrient Removal Processes at a Large WWTP Using a Modified ASM2d Model

Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 80-233 Gdansk, Poland
Ekofinn-Pol Ltd, 80-297 Banino, Poland
ITQUIMA, Chemical Engineering Department, University Castilla-La Mancha, 13071 Ciudad Real, Spain
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2018, 15(12), 2817;
Received: 15 November 2018 / Revised: 2 December 2018 / Accepted: 7 December 2018 / Published: 11 December 2018
(This article belongs to the Special Issue Frontiers in Environmental Engineering)
PDF [902 KB, uploaded 11 December 2018]


The biodegradation of particulate substrates starts by a hydrolytic stage. Hydrolysis is a slow reaction and usually becomes the rate limiting step of the organic substrates biodegradation. The objective of this work was to evaluate a novel hydrolysis concept based on a modification of the activated sludge model (ASM2d) and to compare it with the original ASM2d model. The hydrolysis concept was developed in order to accurately predict the use of internal carbon sources in enhanced biological nutrient removal (BNR) processes at a full scale facility located in northern Poland. Both hydrolysis concepts were compared based on the accuracy of their predictions for the main processes taking place at a full-scale facility. From the comparison, it was observed that the modified ASM2d model presented similar predictions to those of the original ASM2d model on the behavior of chemical oxygen demand (COD), NH4-N, NO3-N, and PO4-P. However, the modified model proposed in this work yield better predictions of the oxygen uptake rate (OUR) (up to 5.6 and 5.7%) as well as in the phosphate release and uptake rates. View Full-Text
Keywords: ASM2d; batch tests; denitrification; hydrolysis; internal C source; OUR ASM2d; batch tests; denitrification; hydrolysis; internal C source; OUR

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Drewnowski, J.; Makinia, J.; Kopec, L.; Fernandez-Morales, F.-J. Modelization of Nutrient Removal Processes at a Large WWTP Using a Modified ASM2d Model. Int. J. Environ. Res. Public Health 2018, 15, 2817.

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