About Judd Water and Wastewater Consultants
About Us
We are based just outside London in the UK and operate worldwide.
Our specialist areas include:
- membrane technology
- wastewater recovery and reuse
- marine water treatment
- municipal wastewater treatment
- industrial effluent treatment
- industrial process water treatment, and
- produced water (Oil & Gas) treatment.
Our expertise is based on Simon Judd’s 40+ years’ experience in water and wastewater treatment. He is now Emeritus Professor at Cranfield University, where he worked within the Water Science Institute for almost 30 years. Simon also held the Maersk Oil Professorial Chair in Environmental Engineering at Qatar University for six years.
Over the years, we have established a huge network of industry contacts, not least from working with over 250 contributors to our reference publications:
- The MBR Book (Elsevier, 2006 and 2010)
- Watermaths (2010, 2013 and 2019)
- Industrial MBRs (2014, 2020).
Our latest book ‘What are MBRs? A pocketbook of membrane bioreactor technology’ (2026) includes digital material for more extensive knowledge.
We are managers of The MBR Group on LinkedIn.com, with 14,000+ members, and own/manage the specialist website The MBR Site.
Simon Judd
Simon has been working in academic and industrial R&D since 1980. His work has spanned all aspects of water and wastewater treatment technology.
Simon held the Maersk Oil Professorial Chair in Environmental Engineering at Qatar University for six years. He is now Emeritus Professor at Cranfield University in the UK, where he worked within the Water Science Institute for almost 30 years.
He has procured and managed a number of large, industrially-focused collaborative R&D programmes. His areas of research have been based primarily on membrane technology, and he has successfully supervised over 30 research student programmes (22 at doctorate level).
Simon has published extensively in the peer-reviewed research literature, with over 215 publications and an h index of 66 (SCOPUS) as of December 2025. He has (co-)authored five textbooks in membrane and MBR technology and two in general water/wastewater treatment technology.
Simon has delivered keynote presentations at many international conferences, as well as consultancy to clients worldwide and bespoke courses to delegates across Europe, America, the Middle East and Far East.
Simon has an extensive network of contacts within the water industry, both nationally and internationally and has provided a full range of consultancy services to industry clients, from technology appraisal to troubleshooting of full-scale installations.
Career Highlights
- 35 years’ post-doctorate experience in municipal and industrial water and wastewater treatment technology development, including project procurement, management and delivery.
- Completion of >50 consultancy projects.
- $10m of funding secured from competitive bidding in national/international funding programmes (UKRC, EUFP, QNRF, etc) or directly from industry, mainly as lead principal investigator (LPI).
- 215 publications in peer-reviewed journals, primarily on membrane technology; h index of 66 on SCOPUS (as of December 2025).
- Author of ‘The MBR Book’ (two editions), ‘Watermaths’ (three editions), ‘Industrial MBRs’ (two editions), and ‘What are MBRs? A pocketbook of membrane bioreactor technology’ (2026). Co-author of three other reference/text books on membrane technology and general water and wastewater treatment design. Chapters contributed to five other general reference books.
- Supervision of over 30 completed research student programmes and more than 90 masters’ thesis projects.
- Consultancy provided to international clients on membrane, MBR and biological treatment technology, ranging from market/technology high-level appraisal to troubleshooting of full-scale installations.
- Wide-ranging research topics including disinfection byproduct formation, algal technology, micropollutants, water reuse, coagulation, magnetic conditioning, gas precipitation, chemical reduction, ion exchange technology and sludge processing as well as membrane technology, municipal and industrial wastewaters (petroleum, landfill leachate and textile).
- Applied research in cost benefit analysis, technology challenge assessment and process optimisation for membrane technologies and MBR technology, in particular.
- Former editorial board/committee member of five learned journals.
- Extensive professional links with senior managers across the UK and international water industry, in particular membrane and MBR technology suppliers, practitioners, consultants and end users.
Claire Judd
Claire Judd is co-owner of Judd Water and Wastewater Consultants.
As a professional Editor, Claire worked on both editions of ‘The MBR Book’, and co-edited and co-published ‘Industrial MBRs’, ‘Watermaths’ and ‘What are MBRs?’, liaising with over a hundred contributors.
Claire manages The MBR Site, an established international source of information for anyone interested in membrane bioreactors for water or wastewater treatment − practitioners, researchers and technology providers.
