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Strategies to enhance micropollutant removal from wastewater by membrane bioreactors: Recent advances and future perspectives by Wancen Liu; Xiaoye Song; Zhang Na; Guoxue Li; Wenhai Luo is a Engineering article available to read on EtoBox.

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Membrane bioreactor (MBR) has been widely implemented to advance wastewater treatment and reuse. Nevertheless, conventional MBRs with porous microfiltration or ultrafiltration membranes are not designed for the removal of micropollutants, which ubiquitously occur in wastewater at trace concentrations, but potentially exert detrimental impacts to the ecosystem. Several effective strategies have been applied to improve MBR performance for micropollutant removal, particularly the hydrophilic and recalcitrant compounds. These strategies mainly include the optimization of operational conditions, employment of high-retention membranes to replace porous ones, addition of functional materials into bioreactor, and integration of effluent purification processes. In particular, effluent purification by advanced oxidation processes (AOPs) and high-retention membranes can complement MBR to secure almost complete removal of micropollutants. Nevertheless, further research is still necessary to evaluate the technical and economic feasibility of these strategies, especially for long-term treatment performance, to screen the suitable techniques for industrial MBR applications.

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Author

Wancen Liu; Xiaoye Song; Zhang Na; Guoxue Li; Wenhai Luo

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)