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Efficiency of two constructed wetland systems for wastewater treatment: removal of bacterial indicators and enteric viruses

Kaliakatsos Andreas, Kalogerakis Nikos, Manios Thrassyvoulos, Venieri Danai

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/3E38240A-5F92-4122-975B-BCB1B18E645D-
Αναγνωριστικόhttps://doi.org/10.1002/jctb.6001-
Αναγνωριστικόhttps://onlinelibrary.wiley.com/doi/full/10.1002/jctb.6001-
Γλώσσαen-
Μέγεθος8 pagesen
ΤίτλοςEfficiency of two constructed wetland systems for wastewater treatment: removal of bacterial indicators and enteric virusesen
ΔημιουργόςKaliakatsos Andreasen
ΔημιουργόςΚαλιακατσος Ανδρεαςel
ΔημιουργόςKalogerakis Nikosen
ΔημιουργόςΚαλογερακης Νικοςel
ΔημιουργόςManios Thrassyvoulosen
ΔημιουργόςVenieri Danaien
ΔημιουργόςΒενιερη Δαναηel
ΕκδότηςJohn Wiley and Sonsen
ΠερίληψηPathogenic microorganisms at the effluents of treatment plants entail a potential risk to public health. Enteric viruses such as adenoviruses (AdVs) and enteroviruses (EVs) are responsible for many waterborne diseases. Wastewater treatment methods eliminate successfully the load of indicators but other pathogens such as viruses have been detected in high concentrations at the effluents of wastewater plants. In this perspective, two constructed wetlands (CWs) systems (S1 and S2) were employed and fed with primary wastewater. S1 consists of a free water surface (FWS) wetland and a horizontal subsurface flow (HSSF) wetland working in series, while S2 consists only of the HSSF. Also, both systems included a sand filter (SF) after the HSSF. RESULTS: Results showed that these low-cost systems are capable of eliminating effectively the bacterial indictors (total coliforms, Escherichia coli, Enterococci) achieving removal rates of almost 99% for S1 (3.2–4 Log units) and 89–98% for S2 (1.9–2.7 Log units). Regarding viruses, AdVs, EVs and phages were detected at all sampling points and during all seasons, and they were only partly removed in S1 and/or S2. For example, the virus load was decreased by 2.5 Log units for AdVs and 3.4 Log units for EVs in the case of S1, while the respective values were 4.3 and 1.9 Log units for S2. CONCLUSIONS: Generally, CWs eliminated successfully the bacterial load, while the remaining virus load was significant, thus strengthening the argument that viruses could be a reliable indicator for fecal contamination. © 2019 Society of Chemical Industry.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2020-05-28-
Ημερομηνία Δημοσίευσης2019-
Θεματική ΚατηγορίαBacteriophagesen
Θεματική ΚατηγορίαConstructed wetlandsen
Θεματική ΚατηγορίαDisinfectionen
Θεματική ΚατηγορίαFecal indicatorsen
Θεματική ΚατηγορίαVirusesen
Βιβλιογραφική ΑναφοράA. Kaliakatsos, N. Kalogerakis, T. Manios and D. Venieri, "Efficiency of two constructed wetland systems for wastewater treatment: removal of bacterial indicators and enteric viruses," J. Chem. Technol. Biotechnol., vol. 94, no. 7, pp. 2123-2130, Jul. 2019. doi: 10.1002/jctb.6001en

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