Mainstream anammox reactor performance treating municipal wastewater and batch study of temperature, pH and organic matter concentration cross-effects
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Título: | Mainstream anammox reactor performance treating municipal wastewater and batch study of temperature, pH and organic matter concentration cross-effects |
Autor/a: | Pedrouso Fuentes, Alba Val del Río, María Ángeles Morales Pereira, Nicolás Vázquez Padín, José Ramón Campos Gómez, José Luis Mosquera Corral, Anuska |
Centro/Departamento: | Universidade de Santiago de Compostela. Departamento de Enxeñaría Química Universidade de Santiago de Compostela. Instituto Interdisciplinar de Tecnoloxías Ambientais (CRETUS) |
Palabras chave: | Alkalinity | Autotrophic nitrogen removal | Inorganic carbon | Mainstream | Low temperature | Specific anammox activity | |
Data: | 2020 |
Editor: | Elsevier |
Cita bibliográfica: | Pedrouso, A., Val del Rio, A., Morales, N., Vazquez-Padin, J. R., Campos, J. L., & Mosquera-Corral, A. (2021). Mainstream anammox reactor performance treating municipal wastewater and batch study of temperature, pH and organic matter concentration cross-effects. Process Safety and Environmental Protection, 145, 195-202. doi:10.1016/j.psep.2020.07.052 |
Resumo: | The anammox process is an energy efficient promising alternative to biologically remove the nitrogen. Thus, a 5-L anammox granular reactor was inoculated with sludge coming from a sidestream partial nitritation and anammox reactor (>200 mg TN/L and 30 °C) and it was directly subjected to 15 ± 1 °C treating mimicked municipal wastewater (50 mg TN/L). Results indicated that an acclimation period (commonly used) to progressive reach the mainstream conditions is not needed, shortening the start-up periods. The long-term anammox process stability was proved to treat synthetic wastewater with decreasing alkalinities and nitritified primary settled municipal wastewater. The low pH values (6.2 ± 0.1) of the municipal wastewater fed did not affect the process stability. Residual organic matter concentrations augmented the nitrogen removal efficiency from 80 % (with the synthetic medium) to 92 % achieving effluent concentrations below 10 mg TN/L. Finally, the effect of pH (6–8), temperature (15–30 °C) and organic matter concentration (0–75 mg TOC/L) over the specific anammox activity (SAAMX) was evaluated at short-term. pH and temperature and their interactions exerted significant influence on the SAAMX value while the TOC concentrations itself did not significantly change the SAAMX |
Versión do editor: | https://doi.org/10.1016/j.psep.2020.07.052 |
URI: | http://hdl.handle.net/10347/27908 |
DOI: | 10.1016/j.psep.2020.07.052 |
E-ISSN: | 0957-5820 |
Dereitos: | © 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. |
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