Circulating fluidized-bed bioreactor


CFBBR is a patented technology developed by Dr. George Nakhla and Dr. Jesse Zhu at Western and has demonstrated significant benefits over existing technologies in treating municipal and industrial wastewaters, as well as landfill leachate for removal of organics, suspended solids, and nutrients at a fraction of the volume and area of conventional systems, producing about one-fourth of the biosolids at both lab and pilot scales. In the past 6 years, the CFBBR project has gone through laboratory testing (2002-2005) and pilot testing (2006-2009), with two patents filed in 2004 and 2008, and the first US patent issued in Aug 2008.

The objective of the proposed new research is to carry out validation work to accelerate the commercialization of this technology using process wastewater from various sources, such as industrial waste and landfill leachate. A recently constructed mobile 100 m3/d plant will be tested on municipal wastewater. The project will also investigate piloting of the new design of the CFBBR for high strength organic wastewater treatment that incorporates two interconnected reactors: a methanogenic reactor and a nitrifying aerobic reactor, recently tested at an industrial wastewater treatment facility for a period of at least 1 year.