Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands
Evapotranspiration (ET) in constructed wetlands (CWs) represents a major factor affecting hydrodynamics and treatment performances. The presence of high ET was shown to improve global treatment performances, however ET is affected by a wide range of parameters including plant development and CWs age...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2010/412734 |
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| _version_ | 1841524802385346560 |
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| author | Florent Chazarenc Simon Naylor Yves Comeau Gérard Merlin Jacques Brisson |
| author_facet | Florent Chazarenc Simon Naylor Yves Comeau Gérard Merlin Jacques Brisson |
| author_sort | Florent Chazarenc |
| collection | DOAJ |
| description | Evapotranspiration (ET) in constructed wetlands (CWs) represents a major factor affecting hydrodynamics and treatment performances. The presence of high ET was shown to improve global treatment performances, however ET is affected by a wide range of parameters including plant development and CWs age. Our study aimed at modelling the effect of plants and peat on ET in CWs; since we hypothesized peat could behave like the presence of accumulated organic matter in old CWs. Treatment performances, hydraulic behaviour, and ET rates were measured in eight 1 m2 CWs mesocosm (1 unplanted, 1 unplanted with peat, 2 planted with Phragmites australis, 2 planted with Typha latifolia and 2 planted with Phragmites australis with peat). Two models were built using first order kinetics to simulate COD and TKN removal with ET as an input. The effect of peat was positive on ET and was related to the better growth conditions it offered to macrophytes. Removal efficiency in pilot units with larger ET was higher for TKN. On average, results show for COD a k20 value of 0.88 d-1 and 0.36 d-1 for TKN. We hypothesized that the main effect of ET was to concentrate effluent, thus enhancing degradation rates. |
| format | Article |
| id | doaj-art-c00d4629389f42c58813bbc59f78bef5 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-c00d4629389f42c58813bbc59f78bef52025-02-03T05:47:22ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782010-01-01201010.1155/2010/412734412734Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed WetlandsFlorent Chazarenc0Simon Naylor1Yves Comeau2Gérard Merlin3Jacques Brisson4Institut de Recherche en Biologie végétale, Université de Montréal, 4101 Sherbrooke St. East, Montréal, QC, H1X 2B2, CanadaDepartment of Civil, Geological and Mining Engineering, École Polytechnique, Montréal, QC, H3C 3A7, CanadaDepartment of Civil, Geological and Mining Engineering, École Polytechnique, Montréal, QC, H3C 3A7, CanadaLaboratoire Optimisation de la Conception et Ingénierie de l'Environnement, Université de Savoie, Campus Scientifique, 73 376 Le Bourget du Lac Cedex, FranceInstitut de Recherche en Biologie végétale, Université de Montréal, 4101 Sherbrooke St. East, Montréal, QC, H1X 2B2, CanadaEvapotranspiration (ET) in constructed wetlands (CWs) represents a major factor affecting hydrodynamics and treatment performances. The presence of high ET was shown to improve global treatment performances, however ET is affected by a wide range of parameters including plant development and CWs age. Our study aimed at modelling the effect of plants and peat on ET in CWs; since we hypothesized peat could behave like the presence of accumulated organic matter in old CWs. Treatment performances, hydraulic behaviour, and ET rates were measured in eight 1 m2 CWs mesocosm (1 unplanted, 1 unplanted with peat, 2 planted with Phragmites australis, 2 planted with Typha latifolia and 2 planted with Phragmites australis with peat). Two models were built using first order kinetics to simulate COD and TKN removal with ET as an input. The effect of peat was positive on ET and was related to the better growth conditions it offered to macrophytes. Removal efficiency in pilot units with larger ET was higher for TKN. On average, results show for COD a k20 value of 0.88 d-1 and 0.36 d-1 for TKN. We hypothesized that the main effect of ET was to concentrate effluent, thus enhancing degradation rates.http://dx.doi.org/10.1155/2010/412734 |
| spellingShingle | Florent Chazarenc Simon Naylor Yves Comeau Gérard Merlin Jacques Brisson Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands International Journal of Chemical Engineering |
| title | Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands |
| title_full | Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands |
| title_fullStr | Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands |
| title_full_unstemmed | Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands |
| title_short | Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands |
| title_sort | modeling the effect of plants and peat on evapotranspiration in constructed wetlands |
| url | http://dx.doi.org/10.1155/2010/412734 |
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