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The aim of this study was to examine the effects of climate, season and wastewater quality on contaminant removal efficiency of constructed wetlands implemented in Mediterranean and continental-Mediterranean climate region of Spain. To this end, two experimental horizontal subsurface flow constructed wetlands located in Barcelona and León (Spain) were compared. The two constructed wetland systems had the same experimental set-up. Each wetland had a surface area of 2.95 m2, a water depth of 25 cm and a granular medium of D60 = 7.3 mm, and was planted with Phragmites australis. Both systems were designed in order to operate with a maximum organic loading rate of 6 gDBO m―2 d―1. Experimental systems operated with a hydraulic loading rate of 28.5 and 98 mm d―1 in Barcelona and León, respectively. Total suspended solids, biochemical oxygen demand and ammonium mass removal efficiencies followed seasonal trends, with higher values in the summer (97.4% vs. 97.8%; 97.1% vs. 96.2%; 99.9% vs. 88.9%, in Barcelona and León systems, respectively) than in the winter (83.5% vs. 74.4%; 73.2% vs. 60.6%; 19% vs. no net removal for ammonium in Barcelona and León systems, respectively). During the cold season, biochemical oxygen demand and ammonium removal were significantly higher in Barcelona system than in León, as a result of higher temperature and redox potential in Barcelona. During the warm season, statistical differences were observed only for ammonium removal. Results showed that horizontal subsurface flow constructed wetland is a successful technology for both regions considered, even if winter seemed to be a critical period for ammonium removal in continental climate regions.

Titel:	Effect of climatic conditions, season and wastewater quality on contaminant removal efficiency of two experimental constructed wetlands in different regions of Spain
Autor/in / Beteiligte Person:	GARFI, Marianna ; PEDESCOLL, Anna ; BECARES, Eloy ; HIJOSA-VALSERO, María ; SIDRACH-CARDONA, Ricardo ; GARCIA, Joan
Link:	E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Zeitschrift:	Science of the total environment, Jg. 437 (2012), S. 61-67
Veröffentlichung:	Kidlington: Elsevier, 2012
Medientyp:	academicJournal
Umfang:	print, 3/4 p
ISSN:	0048-9697 (print)
Schlagwort:	Europe Europa Espagne Spain España Ecology Ecologie Environment Environnement Pollution Toxicology Toxicologie 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 Sciences biologiques et medicales Biological and medical sciences Sciences biologiques fondamentales et appliquees. Psychologie Fundamental and applied biological sciences. Psychology Biotechnologie Biotechnology Applications et implications industrielles. Aspects économiques Industrial applications and implications. Economical aspects Environnement et pollution Environment and pollution Epuration biologique des eaux Biological treatment of waters Angiospermae Gramineae Monocotyledones Spermatophyta Ammonium Amonio Climat continental Continental climate Clima continental Climat méditerranéen Mediterranean climate Clima mediterráneo Composé de l'azote Nitrogen compounds Compuesto nitrogenado Condition climatique Climatic condition Condición climática DBO Biological oxygen demand Epuration biologique Biological purification Depuración biológica Epuration eau usée Waste water purification Depuración aguas servidas Etude comparative Comparative study Estudio comparativo Evaluation performance Performance evaluation Evaluación prestación Milieu artificiel Artificial medium Medio artificial Phragmites australis Variation saisonnière Seasonal variation Variación estacional Zone humide Wetland Zona húmeda Ecoulement subsurface BOD Horizontal subsurface flow constructed TSS wetlands Subject Geographic: Europe Europa Espagne Spain España
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: GEMMA―Group of Environmental Engineering and Microbiology, Department of Hydraulic, Maritime and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona 1-3, Building D1, 08034 Barcelona, Spain ; Facultad de Ciencias Biológicas y Ambientales, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain ; Instituto de Medio Ambiente. Universidad de León, La Serna 56, 24071 León, Spain Rights: Copyright 2014 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: Biotechnology ; Pollution

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Effect of climatic conditions, season and wastewater quality on contaminant removal efficiency of two experimental constructed wetlands in different regions of Spain