Dr. Khosrow Farahbakhsh, P.Eng, Assistant Professor

Room 212, Thornbourgh Building. Email: khosrowf@uoguelph.ca

Water reuse is fast becoming a viable option for augmenting freshwater resources. Many communities, including the City of Guelph, are including water reuse in their long-term water supply plans. We are currently working with the City of Guelph on various water reuse technologies and applications including tertiary immersed membranes and reverse osmosis.

One of my summer student, Rob Grech, put together an excellent website on water reuse. To access it click here.

Minimizing RO Biofouling

Reverse osmosis systems are among the most extensively used water reuse technologies worldwide. The efficacy of RO can however, be severely compromised due to biofouling - formation of extensive biofilm on the surface of the RO membrane. Biofouling reduction can lead to substantial improvement in system productivity and reduction in energy consumption.

Currently, PhD student Fraser Kent is investigating the impact of feed pre-treatment on RO biofouling. This research is being conducted at our world-class membrane research facilities at the Guelph Wastewater Treatment Plant.

Comparison of MBR and Advanced Activated Sludge Process as Pre-treatment for RO

Membrane bioreactors (MBR) are fast emerging as an important water reuse technologies. They can also be used as pre-treatment for RO if highly purified effluent is required. A comparison was made between the MBR and an advanced activated sludge system (nutrient removal and sand filtration) as pre-treatment for RO. MSc student Jian Xu successfully defended his thesis on this project in December 2007.