Effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands

Climate warming would be generally influenced by the quantity and component of greenhouse gases during the carbon and nitrogen removal in constructed wetlands (CWs). In this study, the impacts of the combinations by walnut shell (organic-rich substrate improving denitrification), manganese (Mn) ore...

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Autores principales:	Guangming Xu, Yue Li, Junru Wang, Weizhen Yang, Sen Wang, Fanlong Kong
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Constructed wetlands Greenhouse gas Global warming potentials Substrate combination Microbial community Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/85e1b66d8e6748c08707d01ab315cd6e
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spelling	oai:doaj.org-article:85e1b66d8e6748c08707d01ab315cd6e2021-12-01T04:38:03ZEffects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands1470-160X10.1016/j.ecolind.2020.107189https://doaj.org/article/85e1b66d8e6748c08707d01ab315cd6e2021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20311286https://doaj.org/toc/1470-160XClimate warming would be generally influenced by the quantity and component of greenhouse gases during the carbon and nitrogen removal in constructed wetlands (CWs). In this study, the impacts of the combinations by walnut shell (organic-rich substrate improving denitrification), manganese (Mn) ore (electron-exchange substrate transferring CH4 to CO2) and activated alumina (phosphorus-adsorption substrate) on global warming potentials (GWPs) were investigated to propose a strategy for both mitigating GWPs and performing well in wastewater treatment. During hybrid CWs, the highest COD and TP removal efficiencies were respectively 89.4% and 98.1% in CWs with the substrate combination of Mn ore and activated alumina, and the highest TN removal efficiency was in CWs with walnut shell and Mn ore. The substrate combination of walnut shell and Mn ore would simultaneously strengthen the nitrification and denitrification process resulting in the lowest N2O flux in CWs. The combinations of Mn ore with walnut shell or activated alumina could significantly decrease the GWPs through promoting the conversion of CH4 to CO2 due to the better redox potential environment favorable for methanotrophs (pmoA) instead of methanogenesis (mcrA) provided by Mn ore. This study provided a feasible way to mitigate climate warming during wastewater treatment in CWs by using substrate combination of Mn ore and walnut shell.Guangming XuYue LiJunru WangWeizhen YangSen WangFanlong KongElsevierarticleConstructed wetlandsGreenhouse gasGlobal warming potentialsSubstrate combinationMicrobial communityEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 107189- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Constructed wetlands Greenhouse gas Global warming potentials Substrate combination Microbial community Ecology QH540-549.5
spellingShingle	Constructed wetlands Greenhouse gas Global warming potentials Substrate combination Microbial community Ecology QH540-549.5 Guangming Xu Yue Li Junru Wang Weizhen Yang Sen Wang Fanlong Kong Effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands
description	Climate warming would be generally influenced by the quantity and component of greenhouse gases during the carbon and nitrogen removal in constructed wetlands (CWs). In this study, the impacts of the combinations by walnut shell (organic-rich substrate improving denitrification), manganese (Mn) ore (electron-exchange substrate transferring CH4 to CO2) and activated alumina (phosphorus-adsorption substrate) on global warming potentials (GWPs) were investigated to propose a strategy for both mitigating GWPs and performing well in wastewater treatment. During hybrid CWs, the highest COD and TP removal efficiencies were respectively 89.4% and 98.1% in CWs with the substrate combination of Mn ore and activated alumina, and the highest TN removal efficiency was in CWs with walnut shell and Mn ore. The substrate combination of walnut shell and Mn ore would simultaneously strengthen the nitrification and denitrification process resulting in the lowest N2O flux in CWs. The combinations of Mn ore with walnut shell or activated alumina could significantly decrease the GWPs through promoting the conversion of CH4 to CO2 due to the better redox potential environment favorable for methanotrophs (pmoA) instead of methanogenesis (mcrA) provided by Mn ore. This study provided a feasible way to mitigate climate warming during wastewater treatment in CWs by using substrate combination of Mn ore and walnut shell.
format	article
author	Guangming Xu Yue Li Junru Wang Weizhen Yang Sen Wang Fanlong Kong
author_facet	Guangming Xu Yue Li Junru Wang Weizhen Yang Sen Wang Fanlong Kong
author_sort	Guangming Xu
title	Effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands
title_short	Effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands
title_full	Effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands
title_fullStr	Effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands
title_full_unstemmed	Effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands
title_sort	effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/85e1b66d8e6748c08707d01ab315cd6e
work_keys_str_mv	AT guangmingxu effectsofsubstratecombinationsongreenhousegasemissionsandwastewatertreatmentperformanceinverticalsubsurfaceflowconstructedwetlands AT yueli effectsofsubstratecombinationsongreenhousegasemissionsandwastewatertreatmentperformanceinverticalsubsurfaceflowconstructedwetlands AT junruwang effectsofsubstratecombinationsongreenhousegasemissionsandwastewatertreatmentperformanceinverticalsubsurfaceflowconstructedwetlands AT weizhenyang effectsofsubstratecombinationsongreenhousegasemissionsandwastewatertreatmentperformanceinverticalsubsurfaceflowconstructedwetlands AT senwang effectsofsubstratecombinationsongreenhousegasemissionsandwastewatertreatmentperformanceinverticalsubsurfaceflowconstructedwetlands AT fanlongkong effectsofsubstratecombinationsongreenhousegasemissionsandwastewatertreatmentperformanceinverticalsubsurfaceflowconstructedwetlands
_version_	1718405854637588480

Effects of substrate combinations on greenhouse gas emissions and wastewater treatment performance in vertical subsurface flow constructed wetlands

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