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

Jakub Drewnowski, Jacek Makinia, Lukasz Kopec and Francisco-Jesus Fernandez-Morales
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Jakub Drewnowski: Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 80-233 Gdansk, Poland
Jacek Makinia: Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 80-233 Gdansk, Poland
Lukasz Kopec: Ekofinn-Pol Ltd, 80-297 Banino, Poland
Francisco-Jesus Fernandez-Morales: ITQUIMA, Chemical Engineering Department, University Castilla-La Mancha, 13071 Ciudad Real, Spain

IJERPH, 2018, vol. 15, issue 12, 1-8

Abstract: 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), NH 4 -N, NO 3 -N, and PO 4 -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.

Keywords: ASM2d; batch tests; denitrification; hydrolysis; internal C source; OUR (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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