Effect of key design parameters on bacteria community and effluent pollutant concentrations in constructed wetlands using mathematical models

Autor: Roger Samsó, David Sanchez-Ramos, Núria Agulló, Joan García
Přispěvatelé: Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. GEMMA - Grup d'Enginyeria i Microbiologia del Medi Ambient, UNIVERSIDAD DE CASTILLA LA MANCHA CIUDAD REAL ESP, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Universitat Politècnica de Catalunya [Barcelona] (UPC), Milieux aquatiques, écologie et pollutions (UR MALY), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Environmental Engineering
WASTEWATER TREATMENT
Nitrogen
0208 environmental biotechnology
Zones humides artificials
Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua [Àrees temàtiques de la UPC]
Wetland
02 engineering and technology
Wastewater treatment
Wastewater
010501 environmental sciences
Waste Disposal
Fluid
01 natural sciences
MODELING
Environmental Chemistry
ASPECT RATIO
Subsurface flow
Waste Management and Disposal
Effluent
0105 earth and related environmental sciences
Pollutant
geography
geography.geographical_feature_category
Bacteria
Constructed wetlands
Depth
BIO_PORE
Environmental engineering
Modeling
Models
Theoretical
Pollution
Aspect ratio
6. Clean water
020801 environmental engineering
CWM1
Waste treatment
13. Climate action
Wetlands
DEPTH
[SDE]Environmental Sciences
Environmental science
Water treatment
Sewage treatment
Water Microbiology
Water Pollutants
Chemical
Zdroj: Science of the Total Environment
Science of the Total Environment, Elsevier, 2017, 584-585, pp.374-380. ⟨10.1016/j.scitotenv.2017.01.014⟩
Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
ISSN: 0048-9697
1879-1026
DOI: 10.1016/j.scitotenv.2017.01.014⟩
Popis: Constructed wetlands are currently recognized as an effective environmental biotechnology for wastewater treatment, but the influence of their design parameters on internal functioning and contaminant removal efficiency is still under discussion. In this work, the effect of aspect ratio and water depth on bacteria communities as well as treatment efficiency of horizontal subsurface flow constructed wetlands (HSSF) under the Mediterranean climate was evaluated, using a mathematical model. For this purpose, experimental results from four pilot-scale wetlands of equal surface area but different aspect ratios and water depth were used. The HSSF system was fed with municipal wastewater. The experimental data were simulated using the BIO_PORE model, developed in the COMSOL Multiphysics™ platform. Simulations with the BIO_PORE model fitted well to the experimental results, showing a higher removal efficiency for the shallower HSSF for COD (93.7% removal efficiency) and ammonia nitrogen (73.8%). The aspect ratio had a weak relationship with the bacteria distribution and the removal efficiency. In contrast, the water depth was a factor. The results of the present study confirm a previous hypothesis in which depth has an important impact on the biochemical reactions causing contaminants transformation and degradation.
Databáze: OpenAIRE
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