The MBR Blog

Misc Simon Judd 2

Simon Judd

Professor Simon Judd has over 20 years’ experience in teaching the fundamentals of water and wastewater technologies and is author of The MBR Book, Watermaths, and Industrial MBRs. Contact Simon at

Really cleaning up − clogging in MBRs

Having spent the best part of 6−7 years bemoaning the lack of understanding of clogging of MBR membrane channels, it is with a certain amount of pride that I can report that the group at Cranfield has recently produced three papers on the topic.

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Stringing us along − filamentous bacteria in MBRs

There can be few things more confounding in MBR operation and maintenance than the development of filamentous bacteria in the biotank. These are 'string-like' micro-organisms, with different species apparently prevailing under different conditions.

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Cleaning up − MBR panel cleaning

While the academic profession continues to find increasingly expensive analytical instrumentation and more protracted procedures for fractionating and identifying foulants in municipal MBRs, it’s left to practitioners to come up with methods for tackling fouling.

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Under the microscope − micropollutants in wastewater

Anyone working in wastewater cannot have failed to have noticed the increasing attention being paid to micropollutants. These are substances capable, we are assured, of wreaking havoc on the environment with potentially significant risk to human health.

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A good polish − the case for MBRs

There is a debate over whether MBRs are worth the money, when a biotreatment plant with a micro/ultrafiltration polish would suffice. There are all sorts of factors at play here.

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