Continuous flow reactors for cultivating aerobic granular sludge: configuration innovation, principle and research prospect

Efficient start‐up, cultivation and maintenance of aerobic granular sludge (AGS) in continuous flow reactors (CFRs) is critical for its full‐scale application in wastewater treatment plants (WWTPs). The successful implementation of AGS under continuous flow condition depends on the configuration of...

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Bibliographic Details
Published in:Journal of chemical technology and biotechnology (1986) 2021-10, Vol.96 (10), p.2721-2734
Main Authors: Yan, Jin‐Lei, Cui, You‐Wei, Huang, Ji‐Lin
Format: Article
Language:English
Subjects:
aerobic granular sludge (AGS)
Configurations
Continuous flow
Granulation
granulation in continuous flow
granulation mechanism
Innovations
reactor configuration
Reactors
selective pressure
Shear forces
Sludge
Wastewater treatment
Wastewater treatment plants
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Summary:Efficient start‐up, cultivation and maintenance of aerobic granular sludge (AGS) in continuous flow reactors (CFRs) is critical for its full‐scale application in wastewater treatment plants (WWTPs). The successful implementation of AGS under continuous flow condition depends on the configuration of CFR that provides the selective pressures and hydraulic shear force (HSF) to sludge required for rapid granulation. Important progress has been witnessed with respect to CFR configurations in recent decades for in‐situ granulation of aerobic sludge. This review summarized the difficulties of granulation during continuous flow, as well as the reactor configuration, granulation mechanism and the AGS characteristics, along with the future research prospects. It is of significance to promote the innovation of continuous flow configuration in order to realize the AGS application in mainstream WWTPs in the future. © 2021 Society of Chemical Industry (SCI).
ISSN:0268-2575
1097-4660
DOI:10.1002/jctb.6791