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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Influence of operational parameters on nutrient removal from eutrophic water in a constructed wetland (2017)
Auteurs :	Núria Oliver, Auteur ; Miguel Martín, Auteur ; Sara Gargallo, Auteur ; Carmen Hernández-Crespo, Auteur
Type de document :	Article
Dans :	Hydrobiologia (792(1) 2017/05/01)
Article en page(s) :	105-120
Langues:	Anglais
Résumé :	The present study offers several management strategies in order to improve the performance of a free water surface constructed wetland that treats mainly eutrophic water and which is also designed to improve and increase the biodiversity of habitat and wildlife. To attain these goals, it has been necessary to analyze the influence of certain operational parameters and environmental factors on the mass removal rates (MRRs) and the mass removal efficiencies (MREs), depending on if the objective is to maximize nutrient removal or to achieve low effluent concentrations. The system, referred to as FG, operated in a range of hydraulic loading rates (HLRs) from 7 to 58 m year−1 and removed phosphorus (P) and nitrogen (N) at an average rate of 7.15 g P m−2 year−1 and 60.07 g N m−2 year−1. P and N removal varied seasonally, mainly due to input concentrations (C in), but inlet mass loading and HLRs also strongly influenced MRRs. Based on these results, we propose to maintain a mean HLR of 58 m year−1 in winter and 25 m year−1 in summer to increase annual nutrient removal and thereby barely affecting pumping costs.
En ligne :	http://link.springer.com/article/10.1007/s10750-016-3048-4

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