Simon Judd, author of The MBR Book, Watermaths, and Industrial MBRs, offers observations on membrane technology in this occasional blog.

About Simon

Professor Simon Judd lectures at Cranfield University in the UK and Qatar University in the Middle East. He has over 20 years’ experience in teaching the fundamentals of water and wastewater technologies and is an acknowledged expert in membrane bioreactor technology and produced water.

Simon has written a number of text books on water and wastewater treatment, including ‘Watermaths‘, a textbook for undergraduates and practitioners on maths for water and wastewater treatment technologies.

He continues to conduct research into wastewater technologies, specialising in membrane bioreactors and produced water, and provides consultancy on water and wastewater treatment to clients across the globe. Contact Simon at

  • 22 January 2015
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    The top 25 water industry leaders – fame at last?

    There is, they say, nothing more flattering than being recognised by one’s peers. In my particular case, it is tinged with a deep sense of bewilderment. You, dear reader, are right now reading the work ... Read more

  • 23 April 2014
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    Imperial units versus Le Système international d’unités (SI units)

    Length, area and volume are expressed in three different units in specific flux. To resolve to a single unit of length would require converting gallons to either cubic feet or cubic inches. Then there’s the concept of ‘pounds force’, force being mass times gravitational acceleration ... Read more

  • 13 October 2012
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    Force and impact

    It can be boring to hold forth about the bountiful merits of a fellow academic in such glowing terms as to suggest that they are at the pinnacle of their career, of the highest profile and renowned to one and all. It is possibly even more galling to do so if the subject is in the early stages in their career, ... Read more

  • 17 December 2011
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    Cleaning up

    Whilst 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 the practitioners to come up with methods for tackling manifestation of fouling. ... Read more

  • 17 September 2011
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    Foul play

    I was privileged to attend a defence of a student PhD in the beautiful surroundings of Delft earlier this week. Apart from a rather bizarre protocol to which the university strictly adhered, entailing all examiners dressing as Jedi knights, it was a most agreeable experience. ... Read more

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