2024-03-28T10:07:19Zhttps://gredos.usal.es/oai/requestoai:gredos.usal.es:10366/1509392022-11-04T09:41:58Zcom_10366_3915com_10366_3824com_10366_3823col_10366_3916
García-Prieto, Juan Carlos
Núñez-Núñez, Cynthia Manuela
Proal-Nájera, José Bernardo
García Roig, Manuel
2022-11-02T11:48:24Z
2022-11-02T11:48:24Z
2022-01-20
García-Prieto, J.C., Núñez-Núñez, C.M., Proal-Nájera, J.B. et al. (2022). Study of coliforms and Clostridium bacteria inactivation in wastewaters by a pilot photolysis process and by the maturation lagoons of a low-cost nature-based WWTP. Environ Sci Pollut Res 29, 35484–35499. https://doi.org/10.1007/s11356-021-18184-w
0944-1344
http://hdl.handle.net/10366/150939
10.1007/s11356-021-18184-w
1614-7499
[EN] The inactivation processes of coliform bacteria (total and fecal) and sulphito-reducing Clostridium bacteria (vegetative species and spores) in water maturation lagoon of a low-cost nature-based wastewater treatment plant using constructed wetlands and through processes of photolysis in a pilot photoreactor have been comparatively studied. The diferent inactivation mechanisms by photolysis of these bacteria have been studied following the criteria of diferent statistical and kinetic models. Clostridium disinfection treatments ft models in which two types of bacteria populations coexist, one sensitive (vegetative species) and the other (spores) resistant to the treatment, the sensitive one (94%) with an inactivation rate of k=0.24±0.07 min−1 and the resistant one (6%) with k=0.11±0.05 min−1. Total coliform photolytic disinfection also shows
two populations with diferent physiological state. The time required to reduce the frst logarithmic decimal cycle of the diferent types of bacteria (physiological states) are δ1=4.2±0.9 and δ2=8.3±1.1 min, respectively. For fecal coliform photolytic disinfection, only bacteria population, with k=1.15±0.19 min−1, is found. The results obtained confrm the photolytic disinfection processes and maturation lagoon are efective systems for Clostridia bacteria removal after water treatment by nature-based systems. Total removal of coliform bacteria is not achieved by maturation lagoons, but their reduction is signifcant using low doses of cumulative radiation.
Publicación en abierto financiada por el Consorcio de Bibliotecas Universitarias de Castilla y León (BUCLE), con cargo al Programa Operativo 2014ES16RFOP009 FEDER 2014-2020 DE CASTILLA Y LEÓN, Actuación:20007-CL - Apoyo Consorcio BUCLE.
eng
Springer
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Photolysis
Wastewater
Disinfection/inactivation
Endospores
Clostridium
Coliforms
Maturation lagoons
Constructed wetlands
3308.11 Control de la Contaminación del Agua
Study of coliforms and Clostridium bacteria inactivation in wastewaters by a pilot photolysis process and by the maturation lagoons of a low-cost nature-based WWTP
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
https://doi.org/10.1007/s11356-021-18184-w
Environmental Science and Pollution Research
29
23
35484
35499