2014
DOI: 10.1080/09593330.2014.893024
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Effect of aeration on pollutants removal, biofilm activity and protozoan abundance in conventional and hybrid horizontal subsurface-flow constructed wetlands

Abstract: The large area demand of constructed wetlands (CWs) is documented as a weak point that can be potentially reduced by applying active aeration. The aim of this study was, therefore, to understand the effects of aeration on the treatment performance, the biofilm activity, the protozoan population size and potential CW footprint reduction of different horizontal flow (HF) CW configurations. Two experimental periods were considered: a first period with low organic loading rate (OLR) and a second period with high O… Show more

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Cited by 19 publications
(12 citation statements)
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“…Organic matter compounds (i.e., humic-, fulvic-and proteinlike) were analyzed by measuring the fluorescence excitation emission matrix (EEM) spectra of samples from the WW + , WW ++ and WW þþ A periods (n = 1) as described by Zapater-Pereyra et al (2014) using MATLAB (version R2012b) to identify the compounds in contour maps as peaks of an EMM.…”
Section: Sample Collection and Analytical Methodsmentioning
confidence: 99%
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“…Organic matter compounds (i.e., humic-, fulvic-and proteinlike) were analyzed by measuring the fluorescence excitation emission matrix (EEM) spectra of samples from the WW + , WW ++ and WW þþ A periods (n = 1) as described by Zapater-Pereyra et al (2014) using MATLAB (version R2012b) to identify the compounds in contour maps as peaks of an EMM.…”
Section: Sample Collection and Analytical Methodsmentioning
confidence: 99%
“…3 and 4,* symbol). Many studies have claimed that the use of artificial aeration enhances the removal of many pollutants namely COD, NH 4 + -N and TN (e.g., Dong et al, 2012;Hu et al, 2012;Fan et al, 2013;Foladori et al, 2013;Zapater-Pereyra et al, 2014). However, some studies are conducted in HFCWs where the aeration effect probably plays a major role since oxygen transfer in HFCWs is lower than that in VFCWs (e.g., Fan et al, 2013;ZapaterPereyra et al, 2014).…”
Section: Aerationmentioning
confidence: 96%
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“…Therefore, the B/C value of the influent, which can be controlled by regulating the volume ratios of different water sources in the influent, should be considered as an important influencing factor. The impact of aeration intensity and period on the treatment efficiency of CWs is well documented (Ouellet-Plamondon et al, 2006;Dong et al, 2012;Zapater-Pereyra et al, 2014). However, little information on the aeration position, which may have a significant impact on the distribution of DO concentration and thus the removal of pollutants by influencing oxygen diffusion paths, is available from the literature.…”
Section: Orthogonal Experiments Designmentioning
confidence: 99%
“…The other favorable considerations for CWs are that they are simple in construction as well as in operation and maintenance, have high robustness and process stability, high buffer capacity for hydraulic and organic load fluctuations, and a low sludge production (Langergraber et al 2010). Several research studies has been dedicated to explore possibility of reducing footprint besides achieving good quality effluent (Kantawanichkul et al 2003; Ye and Li 2009; Zhang et al 2010; Prost-Boucle and Molle 2012; Foladori et al 2012, 2013; Zapater-Pereyra et al 2014, 2015). …”
Section: Introductionmentioning
confidence: 99%