Oxygen transfer in marsh-pond-marsh constructed wetlands treating swine wastewater

RO, Kyoung S ; HUNT, Patrick G ; et al.

In: Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, Jg. 45 (2010), Heft 3, S. 377-382

academicJournal - print, 11 ref

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Oxygen transfer efficiencies of various components of the marsh-pond-marsh (M-P-M) and marsh-floating bed-marsh (M-FB-M) wetlands treating swine wastewater were determined by performing oxygen mass balance around the wetlands. Biological oxygen demand (BOD) and total nitrogen (TN) loading and escaping rates from each wetland were used to calculate carbonaceous and nitrogenous oxygen demands. Ammonia emissions were measured using a wind tunnel. Oxygen transfer efficiencies of the aerated ponds were estimated by conducting the ASCE standard oxygen transfer test in a tank using the same aeration device. Covering pond water surface with the floating bed slightly decreased oxygen transfer efficiency. The diffused membrane aeration (26.7 kg 02 ha-1 d-1) of M-P-M was surprisingly not as effective as plant aeration in the marsh (38.9 to 42.0 kg 02 ha-1 d-1). This unusually low oxygen transfer efficiency of the diffused aeration was attributed to its low submergence depth of 0.8 m compared to typical depth of 4.5 m. The wetlands consisting entirely of marsh removed similar amounts of C and N without investing additional equipment and energy costs of aerating ponds in the middle of wetlands.

Titel:	Oxygen transfer in marsh-pond-marsh constructed wetlands treating swine wastewater
Autor/in / Beteiligte Person:	RO, Kyoung S ; HUNT, Patrick G ; JOHNSON, Melvin H ; MATHENY, Terry A ; FORBES, Dean ; REDDY, Gudigopuram B
Link:	View record from PASCAL Archive
Zeitschrift:	Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, Jg. 45 (2010), Heft 3, S. 377-382
Veröffentlichung:	Philadelphia, PA: Taylor & Francis, 2010
Medientyp:	academicJournal
Umfang:	print, 11 ref
ISSN:	1093-4529 (print)
Schlagwort:	Ecology Ecologie Environment Environnement Pollution Sciences exactes et technologie Exact sciences and technology Sciences appliquees Applied sciences Traitement et pollution des eaux Water treatment and pollution Eaux usées Wastewaters Procédés généraux d'épuration General purification processes Artiodactyla Mammalia Ungulata Vertebrata Ammoniac Ammonia Amoníaco Azote Nitrogen Nitrógeno Aération Aeration Aeración Bilan matière Material balance Balance materia Chargement Loading Cargamento DBO Biological oxygen demand Eau usée Waste water Agua residual Emission polluant Pollutant emission Emisión contaminante Epuration biologique Biological purification Depuración biológica Epuration eau usée Waste water purification Depuración aguas servidas Marais Marsh Pantano Milieu artificiel Artificial medium Medio artificial Porcin Swine Porcino Soufflerie Wind tunnel Túnel aerodinámico Transfert oxygène Oxygen transfer Transferencia oxígeno Zone humide Wetland Zona húmeda Swine wastewater ammonia emission constructed wetlands oxygen balance
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: USDA-ARS Coastal Plains Soil, Water & Plant Research Center, Florence, South Carolina, United States ; North Carolina A&T State University, Department of Natural Resources, Greensboro, North Carolina, United States Rights: Copyright 2015 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Pollution

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