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

2021 ◽  
Author(s):  
Jin‐Lei Yan ◽  
You‐Wei Cui ◽  
Ji‐Lin Huang
Keyword(s):  
Continuous Flow ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Flow Reactors ◽  
Research Prospect ◽  
Continuous Flow Reactors

scholarly journals New Advances in Aerobic Granular Sludge Technology Using Continuous Flow Reactors: Engineering and Microbiological Aspects

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1792
Author(s):  
Aurora Rosa-Masegosa ◽  
Barbara Muñoz-Palazon ◽  
Alejandro Gonzalez-Martinez ◽  
Massimiliano Fenice ◽  
Susanna Gorrasi ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Innovative Technology ◽  
Granular Systems ◽  
Flow Reactors ◽  
Operational Conditions ◽  
Advantages And Disadvantages ◽  
Granular Biomass ◽  
Continuous Flow Reactors

Aerobic granular sludge (AGS) comprises an aggregation of microbial cells in a tridimensional matrix, which is able to remove carbon, nitrogen and phosphorous as well as other pollutants in a single bioreactor under the same operational conditions. During the past decades, the feasibility of implementing AGS in wastewater treatment plants (WWTPs) for treating sewage using fundamentally sequential batch reactors (SBRs) has been studied. However, granular sludge technology using SBRs has several disadvantages. For instance, it can present certain drawbacks for the treatment of high flow rates; furthermore, the quantity of retained biomass is limited by volume exchange. Therefore, the development of continuous flow reactors (CFRs) has come to be regarded as a more competitive option. This is why numerous investigations have been undertaken in recent years in search of different designs of CFR systems that would enable the effective treatment of urban and industrial wastewater, keeping the stability of granular biomass. However, despite these efforts, satisfactory results have yet to be achieved. Consequently, it remains necessary to carry out new technical approaches that would provide more effective and efficient AGS-CFR systems. In particular, it is imperative to develop continuous flow granular systems that can both retain granular biomass and efficiently treat wastewater, obviously with low construction, maintenance and exploitation cost. In this review, we collect the most recent information on different technological approaches aimed at establishing AGS-CFR systems, making possible their upscaling to real plant conditions. We discuss the advantages and disadvantages of these proposals and suggest future trends in the application of aerobic granular systems. Accordingly, we analyze the most significant technical and biological implications of this innovative technology.

scholarly journals Aerobic Granular Sludge–Membrane BioReactor (AGS–MBR) as a Novel Configuration for Wastewater Treatment and Fouling Mitigation: A Mini-Review

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 261
Author(s):  
Riccardo Campo ◽  
Claudio Lubello ◽  
Tommaso Lotti ◽  
Gaetano Di Bella
Keyword(s):  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Major Drawback ◽  
Flow Reactors ◽  
Operational Strategies ◽  
Fouling Mitigation ◽  
Continuous Flow Reactors ◽  
Review Reports

This mini-review reports the effect of aerobic granular sludge (AGS) on performance and membrane-fouling in combined aerobic granular sludge–membrane bioreactor (AGS–MBR) systems. Membrane-fouling represents a major drawback hampering the wider application of membrane bioreactor (MBR) technology. Fouling can be mitigated by applying aerobic granular sludge technology, a novel kind of biofilm technology characterized by high settleability, strong microbial structure, high resilience to toxic/recalcitrant compounds of industrial wastewater, and the possibility to simultaneously remove organic matter and nutrients. Different schemes can be foreseen for the AGS–MBR process. However, an updated literature review reveals that in the AGS–MBR process, granule breakage represents a critical problem in all configurations, which often causes an increase of pore-blocking. Therefore, to date, the objective of research in this sector has been to develop a stable AGS–MBR through multiple operational strategies, including the cultivation of AGS directly in an AGS–MBR reactor, the occurrence of an anaerobic-feast/aerobic-famine regime in continuous-flow reactors, maintenance of average granule dimensions far from critical values, and proper management of AGS scouring, which has been recently recognized as a crucial factor in membrane-fouling mitigation.

Continuous flow reactors: a perspective

2012 ◽  
Vol 14 (1) ◽  
pp. 38-54 ◽  
Author(s):  
Charlotte Wiles ◽  
Paul Watts
Keyword(s):  
Continuous Flow ◽  
Flow Reactors ◽  
Continuous Flow Reactors

Design and analysis of continuous-flow reactors for copper sulfide precipitation process by a computational method

2019 ◽  
Vol 26 (33) ◽  
pp. 34531-34551 ◽  
Author(s):  
Zhihui Yang ◽  
Bo Li ◽  
Weizhi Zeng ◽  
Ken Li ◽  
Shan Liu ◽  
...  
Keyword(s):  
Copper Sulfide ◽  
Continuous Flow ◽  
Computational Method ◽  
Precipitation Process ◽  
Flow Reactors ◽  
Sulfide Precipitation ◽  
Continuous Flow Reactors

Synthesis of Tailored Segmented Polyurethanes Utilizing Continuous-Flow Reactors and Real-Time Process Monitoring

2021 ◽  
Author(s):  
Xabier Lopez de Pariza ◽  
Tim Erdmann ◽  
Pedro L. Arrechea ◽  
Leron Perez ◽  
Charles Dausse ◽  
...  
Keyword(s):  
Real Time ◽  
Process Monitoring ◽  
Continuous Flow ◽  
Time Process ◽  
Flow Reactors ◽  
Segmented Polyurethanes ◽  
Continuous Flow Reactors

Functional Group Interconversion Reactions in Continuous Flow Reactors

2021 ◽  
Vol 25 ◽  
Author(s):  
Alexander Leslie ◽  
Angel Maria Joseph ◽  
Marcus Baumann
Keyword(s):  
Continuous Flow ◽  
Functional Group ◽  
Modern Synthesis ◽  
Flow Reactors ◽  
Flow Synthesis ◽  
Specific Reaction ◽  
Solid Foundation ◽  
Continuous Flow Reactors ◽  
Flow Techniques

: An overview of the current uptake of continuous flow techniques for various functional group interconversion reactions is presented. Besides highlighting a variety of prominent examples and their main features, this review provides insights into specific reaction classes, such as oxidations, reductions, rearrangements as well as different C-H functionalization processes. While this review can only include key examples from the last decade, the reader will find a solid foundation of important transformations along with further references to inform and appreciate the opportunities arising from modern synthesis technologies such as flow synthesis.

Visible light-induced iniferter polymerization of methacrylates enhanced by continuous flow

2017 ◽  
Vol 8 (42) ◽  
pp. 6496-6505 ◽  
Author(s):  
Maarten Rubens ◽  
Phanumat Latsrisaeng ◽  
Tanja Junkers
Keyword(s):  
Block Copolymers ◽  
Visible Light ◽  
Continuous Flow ◽  
Flow Reactors ◽  
Continuous Flow Reactors

Visible-light induced photoiniferter polymerization in continuous flow reactors is very efficient in yielding low dispersity methacrylate block copolymers.

Facile, Fast and Safe Process Development of Nitration and Bromination Reactions Using Continuous Flow Reactors

2009 ◽  
Vol 13 (4) ◽  
pp. 698-705 ◽  
Author(s):  
Jacques Pelleter ◽  
Fabrice Renaud
Keyword(s):  
Continuous Flow ◽  
Process Development ◽  
Flow Reactors ◽  
Continuous Flow Reactors

scholarly journals Diels–Alder reactions of myrcene using intensified continuous-flow reactors

2017 ◽  
Vol 13 ◽  
pp. 120-126 ◽  
Author(s):  
Christian H Hornung ◽  
Miguel Á Álvarez-Diéguez ◽  
Thomas M Kohl ◽  
John Tsanaktsidis
Keyword(s):  
Continuous Flow ◽  
Flow Reactor ◽  
Scale Up ◽  
Reaction Times ◽  
Alder Reaction ◽  
Diels Alder ◽  
Flow Reactors ◽  
Diels Alder Reaction ◽  
Naturally Occurring ◽  
Continuous Flow Reactors

This work describes the Diels–Alder reaction of the naturally occurring substituted butadiene, myrcene, with a range of different naturally occurring and synthetic dienophiles. The synthesis of the Diels–Alder adduct from myrcene and acrylic acid, containing surfactant properties, was scaled-up in a plate-type continuous-flow reactor with a volume of 105 mL to a throughput of 2.79 kg of the final product per day. This continuous-flow approach provides a facile alternative scale-up route to conventional batch processing, and it helps to intensify the synthesis protocol by applying higher reaction temperatures and shorter reaction times.

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