Journal of Microbiology and Biotechnology · 2016 · 31 citations · 0 references
EngineeringBioengineeringBiotechnologyBioprocess EngineeringBioreactor DesignWastewater TreatmentBiological Treatment ProcessesBioprocess ControlBioreaction EngineeringBioreactor OperationMembrane Bioreactor SystemsWastewater BiotreatmentBiofoulingBiofouling ControlBiofouling MitigationMembrane BiofoulingMembrane Bioreactor OperationMembrane Bioreactor ProcessesMembrane Bioreactor TechnologyWastewater Treatment Processes
., quorum quenching) and physical washing. Taking into account both the mass transfer of signal molecules through the QQ-medium and collision efficiencies of the QQ-medium against the filtration membranes in a bioreactor, a cylindrical medium (QQ-cylinder) was developed as a new shape of moving QQ-medium. The QQ-cylinders were compared with previous QQ-beads in terms of the QQ activity and the physical washing effect under identical loading volumes of each medium in batch tests. It was found that the QQ activity of a QQ-medium was highly dependent on its specific surface area, regardless of the shape of the medium. In contrast, the physical washing effect of a QQ-medium was greatly affected by its geometric structure. The enhanced anti-biofouling property of the QQ-cylinders relative to QQ-beads was confirmed in a continuous laboratory-scale MBR with a flat-sheet membrane module.