Contact Professor Tom Stephenson

Background

Qualifications: Fellow of the Royal Academy of Engineering (FREng). BSc Biochemistry, University of York, UK. PhD, DIC Public Health Engineering, Imperial College London. CEng, FIChemE, FCIWEM, FHEA. Member of the US Water Environment Federation (WEF).

Previous Experience: Senior Lecturer in Biochemical Engineering, Teesside University. Post Doctoral Researcher, Civil Engineering Department, Imperial College London.

External Appointments: Chairman of Water Innovate, a University spinout set up with colleagues at Cranfield and sold to Bluewater Bio Ltd in 2010. Board member and Chairman (2010-12) of British Water, the trade association representing water sector supply chain companies. Member of Lee Kuan Yew Singapore International Water Prize Jury 2016 onwards.

Current activities

I am research active with a focus on biological wastewater treatment processes, including aerobic and anaerobic systems, fixed film and suspended growth processes, and nutrient (nitrogen and phosphorus) removal. I have also led research in water treatment processes and water reuse and recycling. Current and recent projects include greenhouse gas emissions from wastewater processes, nitrogen transformations, novel fixed film bioreactors and industrial effluent treatment. I have previously worked on activated sludge processes, algal systems for wastewater treatment, biological aerated filters and package sewage treatment plant. Through a spinout, Water Innovate, I have interests in ultra-violet UV light mediated photocatalysis for recalcitrant pollutant removal.

I am currently a co-supervisor of two PhD students on engineered media in moving bed bioreactors for wastewater treatment and the Anammox reaction for nitrogen removal. My teaching interests are in preliminary wastewater treatment, biological processes and the business of the water industry.

I am Pro-Vice-Chancellor for Research and Innovation; my responsibilities as a member of Cranfield's Executive can be viewed here.

Clients

  • Bluewater Bio Ltd
  • Enso International Ltd
  • Engineering and Physical Sciences Research Council (EPSRC)
  • Natural Environment Research Council (NERC)
  • Nu Angle Ltd
  • Severn Trent Water
  • Tata Steel
  • Thames Water

Publications

Articles In Journals

Conference Papers

  • Stephenson Tom (2009) Municipal Sewage Treatment in 2050.
  • Stephenson T, Chilro N, Ballinger D, Edmunds S & Richmond H (2008) Use of the uncoupling effect to reduce sludge production in activated sludge. In: 13th European Biosolids and Biowaste Conference, Manchester, 10 November 2008.
  • Stephenson T, Wang Y, Yan M, Gao N & Ren M (2008) Impact of operating condition on the cyclic activated sludge technology (CAST) performance. In: IWA 9th National UK Young Water Professionals Conference, Newcastle University, 2 April 2008.
  • Stephenson T, Callister S & Harper PLS (2006) Impact of variable emissions rates on odour modelling at WwTW's. In: 4th CIWEM Annual Conference, Newcastle, 12 September 2006.
  • Callister S, Stephenson Tom, Butler M D & Cartmell Elise (2006) N-Tox® - Early warning of nitrification toxicity for activated sludge treatment.. In: 4th CIWEM Annual Conference, Newcastle, 12 September 2006.
  • Connolly H, Van der Gast C, Wylie D, Stephenson T & Thompson I (2005) Formulation of biologically treatable metalworking fluids. In: 13th International Biodeterioration and Biodegradation Symposium, Madrid, Spain, 4 September 2005.
  • Bungay S, Craft D & Stephenson T (2005) The design, commissioning and operation of a single-stage plastic trickling filter. In: Third CIWEM National Conference, Wakefield, 1 September 2005.
  • Connolly H, Van der Gast C, Wylie D, Stephenson T & Thompson I (2005) Enhanced biological treatment of spent metalworking fluids by prior removal of a polymer. In: 3rd European Bioremediation Conference, 2005, Chania, Crete, 4 July 2005.
  • Germain E, Stephenson T & Pearce P (2005) Optimising submerged MBR operation by focussing on the biology. In: Design and Operation of Activated Sludge and Biofilm Systems, Leeds, 21 April 2005.
  • Stephenson T & Rogalla F (2005) Biological aerated filters (BAF) - state of the art. In: Design and Operation of Activated Sludge and Biofilm Systems, Leeds, 1 April 2005.
  • Butler M, Cartmell E, Stokes L & Stephenson T (2005) Non-Invasive Monitoring for Early Warning Nitrification Failure. In: 78th Annual Water Environment Federation Conference, Washington DC, USA, 29 October 2005.
  • Stuetz R, Burgess JE, Bourgeois W & Stephenson T (2004) Biosensing systems for monitoring aerobic wastewater treatment processes. In: European Symposium Enviornmental Biotechnology, Ostend, Belgium, 25 April 2004.
  • Stephenson T & Daude D (2004) Package plants for decentralized sewage treatment - the UK situation. In: 6th IWA Conference Small Water and Wastewater Systems, Perth, Australia, 11 February 2004.
  • Stephenson T, Rogalla F & Cornell P (2004) Biofiltration in comparison: lessons learned over 21 years of full-scale experience. In: 77th Annual Water Environment Federation Conference, New Orleans, USA, 4 October 2004.
  • Stuetz R, Burgess JE & Stephenson T (2004) Non-invasive monitoring of wastewater nitrification failure. In: 20th Australian Water Association Convention, Perth, Australia, 1 January 2004.
  • Stephenson T, Del Solar J & Hudson S (2004) On-site treatment of a motorway service area wastewater using a package sequencing batch reactor. In: 6th IWA Conference Small Water and Wastewater Systems, Perth, Australia, 11 February 2004.
  • Smith S, Judd SJ, Stephenson T & Jefferson B (2003) Membrane bioreactors - hybrid activated sludge or new process. In: 5th International Membrane Science and Technology Conference, Sydney, 10 November 2003.
  • Brookes A, Judd S, Reid E, Germain E, Smith S, Alvarez H, Le-Clech P, Stephenson T, Turra E & Jefferson B (2003) Characterisation and impact of biomass foulants in membrane bioreactors. In: 5th International Membrane Science and Technology Conference, Sydney, Australia, 10 November 2003.
  • Jeffrey P, Stephenson T & Temple C (2003) Ever deeper and wider: incorporating sustainability into a practitioner orientated engineering curriculum. In: 3rd IWA International Conference Environmental Engineering Education, Zurich, Switzerland, 25 September 2003.
  • Stephenson T, Pollard S & Cartmell E (2003) Feasibility of biological aerated filters (BAFs) for leachate treatment. In: 9th International Waste Management and Landfill Symposium, Sardinia, 6 October 2003.
  • Jackman S, Hampton S, Nathanail P, Guess P, Killham K, Paton G, Pollard S, Judd SJ, Stephenson T, Thompson I, Bailey M, Kalin R, Larkin M, Banwart S, Lerner D, Harris R, Beck P, Dalrymple I, Pallett I & Lethbridge G (2003) FIRST Faraday - A network of excellence in remediation of the polluted environment. In: ConSoil 2003, Ghent, Belgium, 12 May 2003.
  • Ratsey HL, Hannay N, Thomas CD & Stephenson T (2002) Activated sludge treatment of high strength industrial wastewater with onsite generation of high purity oxygen. In: 2nd International Conference Management of Wastewaters, Edinburgh, 14 April 2002.
  • Stephenson T (2002) BAFs vs MBRs: horses for courses. In: International Conference Wastewater Management and Technologies for Highly Urbanized Coastal Cities, Hong Kong, 10 June 2002.
  • Berry AL & Stephenson T (2002) High shear systems for wastewater treatment. In: IWA 3rd World Congress, Melbourne, Australia, 22 April 2002.
  • Stephenson T, Parsons SA & Longhurst PJ (2001) Industry-university co-operation in water and wastewater research and training. In: IWA International Conference Water and Wastewater Management for Developing Countries, Kuala Lumpur, Malaysia, 29 October 2001.
  • Stephenson T (2001) Water Reuse in Japan - moving ahead in water recycling technology. In: Management Water Sustainably in the Built Environment, CIRIA, London, 29 November 2001.
  • Stephenson T, Hamblin D & Daude D (2001) Package treatment plants - a solution for developing countries?. In: IWA Interantional Conference Water and Wastewater Management for Developing Countries, Kuala Lumpur, Malaysia, 29 October 2001.
  • Laine A, Jefferson B, Jeffrey P, Judd SJ & Stephenson T (2000) Water recycling from grey to black, the process engineering solution to the water resource problem. In: 2000 IChemE Research Event, Bath, UK, 1 January 2000.
  • Stephenson T, Diaper C, Parsons S, Strathern M & Strutt J (1999) In-building domestic water recycling - risk assessment. In: International Workshop on Cleaner Production, Seoul.
  • Jefferson B, Laine A, Brindle K, Judd S & Stephenson T (1998) Towards a sewerless city. In: Water Environment 1998, Maintaining the flow, London, 26 March 1998.
  • Jeffrey PJ, Seaton RAF & Stephenson T (1997) Coevolution of society and technology: Understanding the dynamics of communities and utility infrastructures. In: 1997 International Symposium on Technology and Society: Technology and Society at a Time of Sweeping Change, Glasgow, 20-21 June 1997.

Books

  • Parsons SA & Stephenson T (2004) Introduction to Wastewater Treatment. In: Phosphorus in Environmental Technology - Removal, Recovery, Applications', IWA Publishing, London.
  • Stephenson T, Judd SJ, Jefferson B & Brindle K (2003) Membrane Bioreactors for Wastewater Treatment (Japanese). IWA Publishing.
  • Judd S, Stephenson T (eds), (2002) Process science and engineering for water and wastewater treatment, IWA Publishing.
  • Stephenson T, Judd SJ, Jefferson B & Brindle K (2000) Membrane Bioreactors for Wastewater Treatment. IWA Publishing.
  • Pollard S, Stephenson T (eds), Risk management for the water and wastewater utility sector, IWA Publishing.