Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/62604
Título
Scale-down of high-rate algae ponds systems for urban wastewater reuse
Año del Documento
2023
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
Journal of Water Process Engineering, 2023, vol. 56, 104342
Resumo
In spite of the important environmental and operative advantages of microalgae-based wastewater treatment systems, they present a low level of implementation. Experimental validations in lab scale should reproduce conditions as close as possible to outdoor conditions. In this sense, two experimental reactors were operated under irradiation and temperature levels corresponding to summer and winter conditions found in temperate climates. The configuration of these reactors resulted in mass transfer rates (gas exchange) in the range of the values reported for industrial scale outdoor facilities. While superficial biomass productivity was in the range of previously reported experiences (between 5.7 and 22 g m−2 d−1, in winter and summer conditions, respectively), pollution removal efficiencies reached the values required for wastewater discharge: >78 % of CODt, >96 % of NH4+ and >79 % of PO43−. Unlike previous experiences, hydraulic retention time (HRT) was maintained constant (3 days) in both seasonal conditions, reaching sufficient pollution removal and biomass productivity. The pathogen concentration reached in the final effluent was compatible with the reclaimed water standards in spite of the absence of ultraviolet light in the illumination system, evidencing the relevance of the environmental conditions created by microalgae metabolism in the disinfection process. The characterization of the microbial population revealed the presence of bacteria responsible of organic matter removal, ammonia oxidation and microalgae commonly found in wastewater systems.
Materias (normalizadas)
Aguas residuales Depuración
Materias Unesco
3308.10 Tecnología de Aguas Residuales
Palabras Clave
Disinfection
Down-scale
Microalgae-based treatment
Desinfección
Reducir la escala
Tratamiento a base de microalgas
ISSN
2214-7144
Revisión por pares
SI
Patrocinador
Regional Government of Castilla y León and the FEDER program (projects CLU 2017-09, CL-EI-2021-07 and UIC315)
European Commission through the LIFE program through LIFE SMART AgroMobility (LIFE19 CCM/ES/001206)
European Commission through the LIFE program through LIFE SMART AgroMobility (LIFE19 CCM/ES/001206)
Propietario de los Derechos
© 2023 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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