Mostra el registre d'ítem simple
Emerging organic contaminants in vertical subsurface flow constructed wetlands : Influence of media size, loading frequency and use of active aeration
dc.contributor.author | Ávila Martín, Cristina |
dc.contributor.author | Nivala, Jaime |
dc.contributor.author | Olsson, Linda |
dc.contributor.author | Kassa, Kinfe |
dc.contributor.author | Headley, Tom |
dc.contributor.author | Mueller, Roland A. |
dc.contributor.author | Bayona i Termens, Josep Maria |
dc.contributor.author | García Serrano, Joan |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Hidràulica, Marítima i Ambiental |
dc.date.accessioned | 2014-10-15T15:46:34Z |
dc.date.created | 2014-10-01 |
dc.date.issued | 2014-10-01 |
dc.identifier.citation | Avila, C. [et al.]. Emerging organic contaminants in vertical subsurface flow constructed wetlands : Influence of media size, loading frequency and use of active aeration. "Science of the total environment", 01 Octubre 2014, vol. 494, p. 211-217. |
dc.identifier.issn | 0048-9697 |
dc.identifier.uri | http://hdl.handle.net/2117/24380 |
dc.description.abstract | Four side-by-side pilot-scale vertical flow (VF) constructed wetlands of different designs were evaluated for the removal of eight widely used emerging organic contaminants from municipal wastewater (i.e. ibuprofen, acetaminophen, diclofenac, tonalide, oxybenzone, triclosan, ethinylestradiol, bisphenol A). Three of the systems were free-draining, with one containing a gravel substrate (VGp), while the other two contained sand substrate (VS1p and VS2p). The fourth system had a saturated gravel substrate and active aeration supplied across the bottom of the bed (VAp). All beds were pulse-loaded on an hourly basis, except VS2p, which was pulse-loaded every 2h. Each system had a surface area of 6.2m2, received a hydraulic loading rate of 95mm/day and was planted with Phragmites australis. The beds received an organic loading rate of 7-16gTOC/m2d. The sand-based VF (VS1p) performed significantly better (p<0.05) than the gravel-based wetland (VGp) both in the removal of conventional water quality parameters (TSS, TOC, NH4-N) and studied emerging organic contaminants except for diclofenac (85±17% vs. 74±15% average emerging organic contaminant removal for VS1p and VGp, respectively). Although loading frequency (hourly vs. bi-hourly) was not observed to affect the removal efficiency of the cited conventional water quality parameters, significantly lower removal efficiencies were found for tonalide and bisphenol A for the VF wetland that received bi-hourly dosing (VS2p) (higher volume per pulse), probably due to the more reducing conditions observed in that system. However, diclofenac was the only contaminant showing an opposite trend to the rest of the compounds, achieving higher elimination rates in the wetlands that exhibited less-oxidizing conditions (VS2p and VGp). The use of active aeration in the saturated gravel bed (VAp) generally improved the treatment performance compared to the free-draining gravel bed (VGp) and achieved a similar performance to the free-draining sand-based VF wetlands (VS1p). |
dc.format.extent | 7 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental |
dc.subject | Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Medi ambient |
dc.subject | Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària |
dc.subject.lcsh | Wetlands. |
dc.subject.lcsh | Sewage |
dc.subject.lcsh | Constructed wetlands |
dc.subject.other | Dosing regime |
dc.subject.other | Grain size |
dc.subject.other | Intensification |
dc.subject.other | Municipal wastewater |
dc.subject.other | Pharmaceutical |
dc.subject.other | Treatment wetland |
dc.title | Emerging organic contaminants in vertical subsurface flow constructed wetlands : Influence of media size, loading frequency and use of active aeration |
dc.type | Article |
dc.subject.lemac | Aiguamolls -- Aspectes ambientals |
dc.subject.lemac | Zones humides artificials |
dc.subject.lemac | Zones humides |
dc.contributor.group | Universitat Politècnica de Catalunya. GEMMA - Grup d'Enginyeria i Microbiologia del Medi Ambient |
dc.identifier.doi | 10.1016/j.scitotenv.2014.06.128 |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0048969714010018 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 15202348 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Avila, C.; Nivala, J.; Olsson, L.; Kassa, K.; Headley, T.; Mueller, R.; Bayona, J.M; Garcia, J. |
local.citation.publicationName | Science of the total environment |
local.citation.volume | 494 |
local.citation.startingPage | 211 |
local.citation.endingPage | 217 |
Fitxers d'aquest items
Aquest ítem apareix a les col·leccions següents
-
Articles de revista [202]
-
Articles de revista [96]