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This study investigates the effects of season, organic matter loadings, hydraulic conditions, recycling, and rapid drainage on water quality in a pilot-scale, three-stage subsurface flow constructed wetland (SSF CW) system. The pilot CW system consisted of a vertical flow-gravel filtration (v-GF) wetland in the first stage, a horizontal-subsurface flow (h-SSF) bed planted with Iris in the second stage, and a vertical-subsurface flow (v-SSF) bed vegetated with Phragmites in the third stage. The objective of this study was to evaluate the potential of these CW systems to remove organic matter from domestic wastewater on a pilot-scale three-stage SSF CW system. Comparisons of average influent and effluent concentrations showed that the multistage system could effectively reduce total suspended solids (TSS), biological oxygen demand (BOD) and chemical oxygen demand (COD) levels in effluent by as much as 98% and total organic carbon (TOC) by as much as 79%. Contributions of the first, second and third stages to the overall treatment were approximately 10%, 45% and 45%, respectively. The average TSS, COD, and TOC concentrations were reduced in the entire CW system by 70%, 80% and 90%, respectively. The BOD and TOC removal efficiencies displayed seasonal variations with average removals generally increasing in warmer seasons. Our results also demonstrate that there were strong correlations between removal efficiencies and loading rates. Average removals decreased with an increase in the hydraulic retention time (HRT). The rapid drainage and recycling operation increased the efficiency of BOD removal only.

Titel:	Performance of a pilot-scale, three-stage constructed wetland system for domestic wastewater treatment
Autor/in / Beteiligte Person:	TUNCSIPER, Bital ; AYAZ, Selma ; AKCA, Lütfi ; GUNES, Kemal
Link:	View record from PASCAL Archive
Zeitschrift:	Environmental technology, Jg. 30 (2009), Heft 11, S. 1187-1194
Veröffentlichung:	Abingdon: Taylor & Francis, 2009
Medientyp:	academicJournal
Umfang:	print, 24 ref
ISSN:	0959-3330 (print)
Schlagwort:	Environment Environnement Geology Géologie Pollution Toxicology Toxicologie Sciences exactes et technologie Exact sciences and technology Sciences appliquees Applied sciences Genie chimique Chemical engineering Séparations mécaniques liquide-liquide et fluide-solide Liquid-liquid and fluid-solid mechanical separations Filtration Traitement et pollution des eaux Water treatment and pollution Pollution des eaux naturelles Natural water pollution Eaux continentales superficielles Continental surface waters Eaux usées Wastewaters Procédés généraux d'épuration General purification processes Plante aquatique Aquatic plant Planta acuática Analyse corrélation Correlation analysis Análisis correlación Carbone organique total Total organic carbon Carbono orgánico total Chargement Loading Cargamento Corrélation Correlation Correlación DBO Biological oxygen demand DCO Chemical oxygen demand Eau surface Surface water Agua superficie Eau usée domestique Domestic waste water Agua residual doméstica Ecoulement vertical Vertical flow Flujo vertical Epuration biologique Biological purification Depuración biológica Epuration eau usée Waste water purification Depuración aguas servidas Filtración Matière organique Organic matter Materia orgánica Milieu artificiel Artificial medium Medio artificial Qualité eau Water quality Calidad agua Recyclage Recycling Reconversión Temps rétention Retention time Tiempo retención Variation saisonnière Seasonal variation Variación estacional Zone humide Wetland Zona húmeda Phragmites constructed wetlands horizontal subsurface flow constructed wetland system multistage constructed wetland system natural wastewater treatment vertical subsurface flow constructed wetland system
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Niǧde University, Faculty of Engineering-Architecture, Department of Environmental Engineering, 51250, Nigde, Turkey ; TUBITAK-Marmara Research Centre, Environment Institute, 41470, Gebze, Kocaeli, Turkey ; Department of Environmental Engineering, Faculty of Civil Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey Rights: Copyright 2009 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: Chemical engineering ; Pollution

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Performance of a pilot-scale, three-stage constructed wetland system for domestic wastewater treatment