RT info:eu-repo/semantics/article
T1 Evaluation of a novel physical cleaning strategy based on HF membrane rotation during the backwashing/relaxation phases for anaerobic submerged MBR
A1 Vera Peña, Luisa María
A1 Ruigómez, Ignacio
A1 González, Enrique
A1 Guerra, Sonia
A1 Rodríguez-Gómez, Luis E.
A2 Ingeniería Química y Tecnología Farmacéutica
A2 Grupo de investigación TyRA
K1 Anaerobic membrane bioreactor
K1 Membrane rotation
K1 Transmembrane set-point
K1 Fouling
K1 Hollow fibre
K1 Gas scourin
AB A novel physical cleaning strategy based on membrane rotation was investigated in an anaerobic membranebioreactor treating wastewater. This strategy was proposed to improve the fouling removal effectiveness of thetraditional physical cleaning techniques (such as backwashing and relaxation) by the shear-enhanced conditionsassociated with the rotation. The effectiveness of this strategy has been investigated in a bench filtration unitduring short-term tests and also compared to the conventional mode with gas scouring. Based on theresistances-in-series approach, the external residual fouling has been identified as the main factor determiningthe process productivity. The contribution of this type of fouling obtained with the rotating membrane waslower than with the gas scouring application (56–18% versus 60–53%, respectively). Other operationalparameters such as the transmembrane pressure set-point for cleaning initiation and the backwashing timehave also showed a significant influence on external fouling re-dispersion. A long-term test revealed thesustainability of the operation during more than 400 h, achieving a stable net permeate flux of 6.7 L/h m 2 whenthe rotating speed was fixed in 340 rpm.
SN 0376-7388
YR 2017
FD 2017
LK http://riull.ull.es/xmlui/handle/915/39927
UL http://riull.ull.es/xmlui/handle/915/39927
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 08-jul-2025