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Feasibility of Adjusting the S(2)O(3)(2−)/NO(3)(−) Ratio to Adapt to Dynamic Influents in Coupled Anammox and Denitrification Systems

In this study, anammox, sulfur-based autotrophic denitrification, and heterotrophic denitrification (A/SAD/HD) were coupled in an expanded granular sludge bed (EGSB) reactor to explore the feasibility of enhancing denitrification performance by adjusting the S(2)O(3)(2−/)NO(3)(−) (S/N) ratio to acco...

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Autores principales: Hou, Yuqian, Cheng, Shaoju, Wang, Mengliang, Zhang, Chenyong, Liu, Bo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177345/
https://www.ncbi.nlm.nih.gov/pubmed/32218305
http://dx.doi.org/10.3390/ijerph17072200
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author Hou, Yuqian
Cheng, Shaoju
Wang, Mengliang
Zhang, Chenyong
Liu, Bo
author_facet Hou, Yuqian
Cheng, Shaoju
Wang, Mengliang
Zhang, Chenyong
Liu, Bo
author_sort Hou, Yuqian
collection PubMed
description In this study, anammox, sulfur-based autotrophic denitrification, and heterotrophic denitrification (A/SAD/HD) were coupled in an expanded granular sludge bed (EGSB) reactor to explore the feasibility of enhancing denitrification performance by adjusting the S(2)O(3)(2−/)NO(3)(−) (S/N) ratio to accommodate dynamic influents. The results indicated that the optimal influent conditions occurred when the conversion efficiency of ammonium (CEA) was 55%, the S/N ratio was 1.24, and the chemical oxygen demand (COD) was 50 mg/L, which resulted in a total nitrogen removal efficiency (NRE) of 95.0% ± 0.5%. The S/N ratio regulation strategy was feasible when the influent COD concentration was less than 100 mg/L and the CEA was between 57% and 63%. Characterization by 16S rRNA sequencing showed that Candidatus Jettenia might have contributed the most to anammox, while Thiobacillus and Denitratisoma were the dominant taxa related to denitrification. The findings of this study provide insights into the effects of CEA and COD on the performance of the A/SAD/HD system and the feasibility of the S/N ratio regulation strategy.
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spelling pubmed-71773452020-04-28 Feasibility of Adjusting the S(2)O(3)(2−)/NO(3)(−) Ratio to Adapt to Dynamic Influents in Coupled Anammox and Denitrification Systems Hou, Yuqian Cheng, Shaoju Wang, Mengliang Zhang, Chenyong Liu, Bo Int J Environ Res Public Health Article In this study, anammox, sulfur-based autotrophic denitrification, and heterotrophic denitrification (A/SAD/HD) were coupled in an expanded granular sludge bed (EGSB) reactor to explore the feasibility of enhancing denitrification performance by adjusting the S(2)O(3)(2−/)NO(3)(−) (S/N) ratio to accommodate dynamic influents. The results indicated that the optimal influent conditions occurred when the conversion efficiency of ammonium (CEA) was 55%, the S/N ratio was 1.24, and the chemical oxygen demand (COD) was 50 mg/L, which resulted in a total nitrogen removal efficiency (NRE) of 95.0% ± 0.5%. The S/N ratio regulation strategy was feasible when the influent COD concentration was less than 100 mg/L and the CEA was between 57% and 63%. Characterization by 16S rRNA sequencing showed that Candidatus Jettenia might have contributed the most to anammox, while Thiobacillus and Denitratisoma were the dominant taxa related to denitrification. The findings of this study provide insights into the effects of CEA and COD on the performance of the A/SAD/HD system and the feasibility of the S/N ratio regulation strategy. MDPI 2020-03-25 2020-04 /pmc/articles/PMC7177345/ /pubmed/32218305 http://dx.doi.org/10.3390/ijerph17072200 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hou, Yuqian
Cheng, Shaoju
Wang, Mengliang
Zhang, Chenyong
Liu, Bo
Feasibility of Adjusting the S(2)O(3)(2−)/NO(3)(−) Ratio to Adapt to Dynamic Influents in Coupled Anammox and Denitrification Systems
title Feasibility of Adjusting the S(2)O(3)(2−)/NO(3)(−) Ratio to Adapt to Dynamic Influents in Coupled Anammox and Denitrification Systems
title_full Feasibility of Adjusting the S(2)O(3)(2−)/NO(3)(−) Ratio to Adapt to Dynamic Influents in Coupled Anammox and Denitrification Systems
title_fullStr Feasibility of Adjusting the S(2)O(3)(2−)/NO(3)(−) Ratio to Adapt to Dynamic Influents in Coupled Anammox and Denitrification Systems
title_full_unstemmed Feasibility of Adjusting the S(2)O(3)(2−)/NO(3)(−) Ratio to Adapt to Dynamic Influents in Coupled Anammox and Denitrification Systems
title_short Feasibility of Adjusting the S(2)O(3)(2−)/NO(3)(−) Ratio to Adapt to Dynamic Influents in Coupled Anammox and Denitrification Systems
title_sort feasibility of adjusting the s(2)o(3)(2−)/no(3)(−) ratio to adapt to dynamic influents in coupled anammox and denitrification systems
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177345/
https://www.ncbi.nlm.nih.gov/pubmed/32218305
http://dx.doi.org/10.3390/ijerph17072200
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