Moving Bed Bio-Reactor (MBBR) Fluidized Aerobic Bed Reactor (FAB) is an advanced high rate wastewater treatment process, utilizing free-floating media which houses huge quantity of active biomass (MLSS). Aventura’s MBBR FAB media provides additional surface area for microbial growth thereby increasing the organic load rate. The media is cylindrical in shape with extended fins and is made of using high quality UV stabilized virgin PP material.