Investigation and analysis at full and pilot scale on operational procedures of biofiltration unit**processes in drinking water treatment

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Biological filtration is touted as one of few methods in drinking water treatment that can reduce chemical**requirements and energy needs in drinking water facilities. In fact, the Water Environment Foundation (2013)**further states "In North America, there is a lack of available and robust tools for monitoring and control of BF**(biofiltration). Identification, validation, and use of monitoring and control tools are necessary to establish BF**(biofiltration) as a process that can be controlled and whose performance can be predicted." It is impossible to**determine how to run a biofilter without having the tools to effectively monitor its performance. The full scale**research project will assess a suite of analytical methods to contribute to the overall knowledge base and**specifically to support the Drinking Water Services Group in the City of Ottawa, in identifying methods to**monitor and maintain their biofilters in optimum conditions. At full scale the carbon removal will be assessed**in a variety of mechanisms for a 12 month period, and will include the evaluation of monitoring tools which**could be used to help meet future needs and expectations on how to monitor biofiltration processes. Further, a**pilot scale comparison of biolfiltration and conventional filtration with different chlorine loads and backwash**wash conditions will be examined. This research will provide data on disinfection byproduct control, headloss**development, and turbidity removal under various conditions. Identification and validation will provide a**scientific and technical advance for the water industry in operating biofilters. From a commercial perspective,**this would provide water treatment equipment suppliers information on what tools they can market and provide**to their customers in order to better improve and operate biofilters in their plants. From a social and**environmental perspective the outcomes are also clear - this project will facilitate drinking water treatment**plant staff will be able to better operate their facilities which can lead to a safer and more sustainable (through**reduced chemical and energy use) water production. Finally, the water industry benefits by advancing the field**of treatment processes and adding highly qualified personnel (HQP) in the water treatment field.