Modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations

Abstract Odors due to the emission of hydrogen sulfide (H2S) have been a concern in the sewage treatment plants over the last decades. H2S fate and emissions from extended aeration activated sludge (EAAS) system in Muharram Aisha-sewage treatment plant (MA-STP) were studied using TOXCHEM model. Sens...

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Autores principales:	Haider M. Zwain, Basim K. Nile, Ahmed M. Faris, Mohammadtaghi Vakili, Irvan Dahlan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c3f8f37d08a64931ad67567080e4a0ad
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spelling	oai:doaj.org-article:c3f8f37d08a64931ad67567080e4a0ad2021-12-02T13:34:11ZModelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations10.1038/s41598-020-79395-82045-2322https://doaj.org/article/c3f8f37d08a64931ad67567080e4a0ad2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79395-8https://doaj.org/toc/2045-2322Abstract Odors due to the emission of hydrogen sulfide (H2S) have been a concern in the sewage treatment plants over the last decades. H2S fate and emissions from extended aeration activated sludge (EAAS) system in Muharram Aisha-sewage treatment plant (MA-STP) were studied using TOXCHEM model. Sensitivity analysis at different aeration flowrate, H2S loading rate, wastewater pH, wastewater temperature and wind speed were studied. The predicted data were validated against actual results, where all the data were validated within the limits, and the statistical evaluation of normalized mean square error (NMSE), geometric variance (VG), and correlation coefficient (R) were close to the ideal fit. The results showed that the major processes occurring in the system were degradation and emission. During summer (27 °C) and winter (12 °C), about 25 and 23%, 1 and 2%, 2 and 2%, and 72 and 73% were fated as emitted to air, discharged with effluent, sorbed to sludge, and biodegraded, respectively. At summer and winter, the total emitted concentrations of H2S were 6.403 and 5.614 ppm, respectively. The sensitivity results indicated that aeration flowrate, H2S loading rate and wastewater pH highly influenced the emission and degradation of H2S processes compared to wastewater temperature and wind speed. To conclude, TOXCHEM model successfully predicted the H2S fate and emissions in EAAS system.Haider M. ZwainBasim K. NileAhmed M. FarisMohammadtaghi VakiliIrvan DahlanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Haider M. Zwain Basim K. Nile Ahmed M. Faris Mohammadtaghi Vakili Irvan Dahlan Modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations
description	Abstract Odors due to the emission of hydrogen sulfide (H2S) have been a concern in the sewage treatment plants over the last decades. H2S fate and emissions from extended aeration activated sludge (EAAS) system in Muharram Aisha-sewage treatment plant (MA-STP) were studied using TOXCHEM model. Sensitivity analysis at different aeration flowrate, H2S loading rate, wastewater pH, wastewater temperature and wind speed were studied. The predicted data were validated against actual results, where all the data were validated within the limits, and the statistical evaluation of normalized mean square error (NMSE), geometric variance (VG), and correlation coefficient (R) were close to the ideal fit. The results showed that the major processes occurring in the system were degradation and emission. During summer (27 °C) and winter (12 °C), about 25 and 23%, 1 and 2%, 2 and 2%, and 72 and 73% were fated as emitted to air, discharged with effluent, sorbed to sludge, and biodegraded, respectively. At summer and winter, the total emitted concentrations of H2S were 6.403 and 5.614 ppm, respectively. The sensitivity results indicated that aeration flowrate, H2S loading rate and wastewater pH highly influenced the emission and degradation of H2S processes compared to wastewater temperature and wind speed. To conclude, TOXCHEM model successfully predicted the H2S fate and emissions in EAAS system.
format	article
author	Haider M. Zwain Basim K. Nile Ahmed M. Faris Mohammadtaghi Vakili Irvan Dahlan
author_facet	Haider M. Zwain Basim K. Nile Ahmed M. Faris Mohammadtaghi Vakili Irvan Dahlan
author_sort	Haider M. Zwain
title	Modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations
title_short	Modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations
title_full	Modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations
title_fullStr	Modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations
title_full_unstemmed	Modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations
title_sort	modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using toxchem simulations
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/c3f8f37d08a64931ad67567080e4a0ad
work_keys_str_mv	AT haidermzwain modellingofhydrogensulfidefateandemissionsinextendedaerationsewagetreatmentplantusingtoxchemsimulations AT basimknile modellingofhydrogensulfidefateandemissionsinextendedaerationsewagetreatmentplantusingtoxchemsimulations AT ahmedmfaris modellingofhydrogensulfidefateandemissionsinextendedaerationsewagetreatmentplantusingtoxchemsimulations AT mohammadtaghivakili modellingofhydrogensulfidefateandemissionsinextendedaerationsewagetreatmentplantusingtoxchemsimulations AT irvandahlan modellingofhydrogensulfidefateandemissionsinextendedaerationsewagetreatmentplantusingtoxchemsimulations
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Modelling of hydrogen sulfide fate and emissions in extended aeration sewage treatment plant using TOXCHEM simulations

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