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Calibration of denitrifying activity of polyphosphate accumulating organisms in an extended ASM2d model.
Water Res. 2010 Oct; 44(18):5284-97.WR

Abstract

This paper presents the results of an experimental study for the modelling and calibration of denitrifying activity of polyphosphate accumulating organisms (PAOs) in full-scale WWTPs that incorporate simultaneous nitrogen and phosphorus removal. The convenience of using different yields under aerobic and anoxic conditions for modelling biological phosphorus removal processes with the ASM2d has been demonstrated. Thus, parameter η(PAO) in the model is given a physical meaning and represents the fraction of PAOs that are able to follow the DPAO metabolism. Using stoichiometric relationships, which are based on assumed biochemical pathways, the anoxic yields considered in the extended ASM2d can be obtained as a function of their respective aerobic yields. Thus, this modification does not mean an extra calibration effort to obtain the new parameters. In this work, an off-line calibration methodology has been applied to validate the model, where general relationships among stoichiometric parameters are proposed to avoid increasing the number of parameters to calibrate. The results have been validated through a UCT scheme pilot plant that is fed with municipal wastewater. The good concordance obtained between experimental and simulated values validates the use of anoxic yields as well as the calibration methodology. Deterministic modelling approaches, together with off-line calibration methodologies, are proposed to assist in decision-making about further process optimization in biological phosphate removal, since parameter values obtained by off-line calibration give valuable information about the activated sludge process such as the amount of DPAOs in the system.

Authors+Show Affiliations

Instituto de Ingeniería del Agua y Medio Ambiente, Universidad Politécnica de Valencia, Camino de Vera s/n. 46022, Valencia, Spain. magarus@hma.upv.esNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20638698

Citation

García-Usach, F, et al. "Calibration of Denitrifying Activity of Polyphosphate Accumulating Organisms in an Extended ASM2d Model." Water Research, vol. 44, no. 18, 2010, pp. 5284-97.
García-Usach F, Ribes J, Ferrer J, et al. Calibration of denitrifying activity of polyphosphate accumulating organisms in an extended ASM2d model. Water Res. 2010;44(18):5284-97.
García-Usach, F., Ribes, J., Ferrer, J., & Seco, A. (2010). Calibration of denitrifying activity of polyphosphate accumulating organisms in an extended ASM2d model. Water Research, 44(18), 5284-97. https://doi.org/10.1016/j.watres.2010.06.061
García-Usach F, et al. Calibration of Denitrifying Activity of Polyphosphate Accumulating Organisms in an Extended ASM2d Model. Water Res. 2010;44(18):5284-97. PubMed PMID: 20638698.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Calibration of denitrifying activity of polyphosphate accumulating organisms in an extended ASM2d model. AU - García-Usach,F, AU - Ribes,J, AU - Ferrer,J, AU - Seco,A, Y1 - 2010/07/03/ PY - 2010/01/28/received PY - 2010/06/08/revised PY - 2010/06/24/accepted PY - 2010/7/20/entrez PY - 2010/7/20/pubmed PY - 2011/1/21/medline SP - 5284 EP - 97 JF - Water research JO - Water Res VL - 44 IS - 18 N2 - This paper presents the results of an experimental study for the modelling and calibration of denitrifying activity of polyphosphate accumulating organisms (PAOs) in full-scale WWTPs that incorporate simultaneous nitrogen and phosphorus removal. The convenience of using different yields under aerobic and anoxic conditions for modelling biological phosphorus removal processes with the ASM2d has been demonstrated. Thus, parameter η(PAO) in the model is given a physical meaning and represents the fraction of PAOs that are able to follow the DPAO metabolism. Using stoichiometric relationships, which are based on assumed biochemical pathways, the anoxic yields considered in the extended ASM2d can be obtained as a function of their respective aerobic yields. Thus, this modification does not mean an extra calibration effort to obtain the new parameters. In this work, an off-line calibration methodology has been applied to validate the model, where general relationships among stoichiometric parameters are proposed to avoid increasing the number of parameters to calibrate. The results have been validated through a UCT scheme pilot plant that is fed with municipal wastewater. The good concordance obtained between experimental and simulated values validates the use of anoxic yields as well as the calibration methodology. Deterministic modelling approaches, together with off-line calibration methodologies, are proposed to assist in decision-making about further process optimization in biological phosphate removal, since parameter values obtained by off-line calibration give valuable information about the activated sludge process such as the amount of DPAOs in the system. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/20638698/Calibration_of_denitrifying_activity_of_polyphosphate_accumulating_organisms_in_an_extended_ASM2d_model_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(10)00458-6 DB - PRIME DP - Unbound Medicine ER -