A Comparison of the Anaerobic Filter and the Anaerobic Expanded/Fluidized Bed Processes

The anaerobic filter and the anaerobic expanded/fluidized bed processes represent advances in wastewater treatment technology for processing organic wastes. Literature data for both processes is presented and discussed. In addition, mass transport concepts are used to compare the substrate flux rates of both systems. It is concluded that the expanded/fluidized bed represents a more efficient design for anaerobic fermentation reactions.