RT info:eu-repo/semantics/article
T1 Secondary wastewater effluent treatment by microalgal-bacterial membrane photobioreactor at long solid retention times
A1 Vera Peña, Luisa María
A2 Ingeniería Química y Tecnología Farmacéutica
A2 Grupo de investigación en Tratamiento y Reutilización de Aguas
K1 Biopolymer clusters
K1 Membrane fouling
K1 Membrane photobioreactor
K1 Microalgae-bacteria consortia
K1 Nutrient remova
AB Microalgal-bacterial membrane photobioreactors (MPBRs) have recently emerged as a new sustainable tech-nology in wastewater treatment. For advanced treatment of domestic secondary effluents, selecting long solidsretention times (SRTs) may be crucial to achieve optimal community structure and therefore, process perfor-mance. This study assesses the effects of operating conditions on nutrient removal, biomass productivity, sus-pension characteristics and membrane fouling. A lab-scale MPBR was run during long-term tests to assess processstability. Indigenous microalgae-bacteria consortia were developed for each condition. Conventional membranebioreactor was used for tested control condition. Experimental results showed the crucial role of extending SRTto 80 d to enhance bioflocculation, avoid biopolymer clusters accumulation and minimize membrane foulingrates. Despite influent fluctuations, optimal hydraulic retention time value between 2 and 5 d was necessary toachieve moderate nutrient removal (40.6–48.7 % and 18.5–34.7 % for nitrogen and phosphorus, respectively). Amixed microalgal structure of green microalgae, cyanobacteria and diatoms was also achieved
SN 2214-7144
YR 2022
FD 2022
LK http://riull.ull.es/xmlui/handle/915/39932
UL http://riull.ull.es/xmlui/handle/915/39932
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 29-nov-2024