132116 20240319081017.0 doi 10.3390/su14116511 sideral 129126 ART-2022-129126 eng Acero-Oliete, Alejandro (orcid)0000-0003-2591-1540 Comparative efficiency of two different constructed wetlands for wastewater treatment of small populations in mediterranean continental climate 2022 Access copy available to the general public Unrestricted The treatment of wastewater from small towns supposes problems of economic efficiency, leading to very high environmental costs in areas with low population density. Constructed wetlands (CW) seems to be the more suitable solution for this kind of situation, but further investigations are needed regarding their efficiency under different climatic conditions. This work presents the results concerning urban wastewater treatment by means of two different constructed wetlands using macrophytes: horizontal subsurface flow (HSSF) and free water surface (FWS). The systems are located in a Mediterranean continental climate area and are fed by a by-pass at the entrance of a wastewater treatment plant. A four-year sampling campaign at the outlet of the CW allowed verifying their relative effectiveness in removing pollutants in the different seasons of the year. BOD5, COD, and TSS were significantly removed (with average reductions of 55%, 60%, and 57%, respectively) by these natural phytodepuration systems, with HSSF being more efficient during plants’ dormancy than FWS, but the concentrations of nutrients indicated that cumulative effects occur in CW with the need of adequate annual maintenance. It was found that the main factors controlling the efficiency of such systems throughout the year are the period of vegetative development, the presence/absence of a solid substrate, and the pollutant load of the wastewater inlet. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.9 2022 ENVIRONMENTAL SCIENCES 114 / 275 = 0.415 2022 Q2 T2 ENVIRONMENTAL STUDIES 48 / 128 = 0.375 2022 Q2 T2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY 34 / 46 = 0.739 2022 Q3 T3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY 5 / 9 = 0.556 2022 Q3 T2 0.664 2022 Geography, Planning and Development 2022 Q1 Energy Engineering and Power Technology 2022 Q2 Environmental Science (miscellaneous) 2022 Q2 Renewable Energy, Sustainability and the Environment 2022 Q2 Hardware and Architecture 2022 Q2 Management, Monitoring, Policy and Law 2022 Q2 Computer Networks and Communications 2022 Q2 5.8 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion López-Julián, Pedro Luis Universidad de Zaragoza (orcid)0000-0002-5585-2126 Russo, Beniamino (orcid)0000-0001-9437-0085 Ruiz-Lozano, Oscar (orcid)0000-0002-5045-337X 2000 428 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Geodinámica Interna 14, 11 (2022), 6511 Sustainability (Basel) Sustainability (Switzerland) 2071-1050 4225378 http://zaguan.unizar.es/record/132116/files/texto_completo.pdf Versión publicada 2760534 http://zaguan.unizar.es/record/132116/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:132116 articulos driver 2024-03-18-15:44:12 ARTICLE