Abstract

In this paper, the validation of models for the organic and nitrogenated substrates utilization rate (SUR) in a sequential batch reactor (SBR) are proposed. The treatments tested are (1) Treatment 1: oxic, cycle duration of 24 h; (2) Treatment 2: oxic, cycle duration of 6 h; (3) Treatment 3: anaerobic-oxic, cycle duration of 24 h; (4) Treatment 4: anaerobic-oxic, cycle duration of 6 h; and (5) Treatment 5: anoxic-oxic-anoxic, cycle duration of 12 h. The novelty consists of the mathematical adjustment for each stage into the proposed treatments for SBR. The SURs of chemical demand oxygen (COD), NH4+, and TKN (total Kjeldahl nitrogen) for the Treatments T1 to T5 have given successful Radjusted2 in the calibration and validation stages and vary between 75% and 100%, allowing the estimation of these variables into the predenitrification, aeration, conventional, and simultaneous denitrification stages of SBR operation.

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Data Availability Statement

The data used by the SUR modeling of organic and nitrogenated matter can be accessed from two sources. The CODs measured in Treatments 1–4 are available in Freytez et al. (2019a, b). The CODs, NH4+, and NKT variables of models for Treatment 5 are available in Pire-Sierra et al. (2016). The parameters of models generated during the study appear in the submitted article.

Acknowledgments

A special acknowledgement is given to the members of Agroindustrial Engineering Program, Lisandro Alvarado Central-Occidental University, Venezuela by providing the SBR operation data and Center of Hydrological and Environmental Research, University of Carabobo, Venezuela by contributing to mathematical modeling.

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Go to Journal of Environmental Engineering
Journal of Environmental Engineering
Volume 146Issue 3March 2020

History

Received: Mar 13, 2019
Accepted: Jun 6, 2019
Published online: Dec 23, 2019
Published in print: Mar 1, 2020
Discussion open until: May 23, 2020

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Estefania Freytez [email protected]
Professor, Agroindustrial Engineering Program, Lisandro Alvarado Central-Occidental Univ., Barquisimeto, Venezuela. Email: [email protected]
Professor, Center of Hydrological and Environmental Research, Univ. of Carabobo, Naguanagua, Carabobo 2006, Venezuela; Av Univ., Municipality of Naguanagua, Carabobo, Venezuela (corresponding author). ORCID: https://orcid.org/0000-0003-1305-5759. Email: [email protected]
Professor, Agroindustrial Engineering Program, Lisandro Alvarado Central-Occidental Univ., Barquisimeto, Venezuela. ORCID: https://orcid.org/0000-0002-6668-8261. Email: [email protected]
Edilberto Guevara-Pérez, Ph.D. [email protected]
Professor, Center of Hydrological and Environmental Research, Univ. of Carabobo, Naguanagua, Carabobo 2006, Venezuela. Email: [email protected]
Sergio Pérez, Ph.D. [email protected]
Professor, Center of Hydrological and Environmental Research, Univ. of Carabobo, Naguanagua, Carabobo 2006, Venezuela. Email: [email protected]

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