Activated Sludge Foaming - New Publication

PhD student Martin Fryer and Professor Nick Gray of the Water Technology Research Group, based in the Centre for the Environment have published a new and precise method for estimating foam development in full scale aeration tanks in wastewater treatment plants. Foaming is a major problem in the operation of activated sludge treatment which is a biological process that treats 90% of wastewater in the developed world. The new methodology opens up the possibility of better foam prediction allowing more time for operators to prevent problematic foam occurring; as well as now being able to measure the effect of remedial action. The foaming Scum Index (FSI) has been presented in the latest issue of the Journal of Environmental Management.



Fryer, M. and Gray, N.F. (2012) Foaming Scum Index (FSI) – A new tool for the assessment and characterization of biological mediated activated sludge foams. Journal of Environmental Management , 110, 8-19. Doi:10.1016/j.jenvman.2012.05.009

Institution of Civil Engineers publish State of the Nation Water Report

Civil engineers are by nature a conservative bunch but in the ICE State of the Nation Water Report published this week they pull no punches. They describe a situation not unlike that in Ireland where the severity and urgency of the nation’s water problems are still not properly understood. They rate the current water security situation in the UK as level 4 on a 1-10 scale, which would be slightly better than Ireland which in some regions is higher. The report offers many possible solutions including the development of new water storage facilities, the removal of regulatory barriers that discourage water sharing between neighbouring companies and collaborative investment in new infrastructure. Among the issues that come as no surprise to us here in Ireland is the recommendation for the phased introduction of phased of universal metering, but with social tariffs to protect the poorest in society.

The grim fact is that if positive action is not taken quickly then water security in the UK could reach level 8 or 9 by 2025. Download a copy of the report at www.ice.org.uk/sonwater2012.

Singapore International Water Week

The fifth Singapore International Water Week (SIWW) will take place on 1-5 July, 2012 with a Water Convention theme of Water Solutions for Living and Sustainable Cities. SIWW is described as a global platform for sharing and co-creation of innovative water solutions, and this year’s theme is looking at the challenges placed on the water sector by climate change and in particular how sustainable water management strategies can be integrated into urban planning.

This year the Lee Kuan Water Prize has been awarded to Professor Mark van Loosdrecht of Delft University of Technology for his work on the development of the Anammox Process.



Over 13,000 people from 99 countries attended last year’s main event and attendance is expected to be well in excess of this for the forthcoming event. Well worth checking out. Link