The ClearFox® FBBR (Fixed Bed Biofilm Reactor) is a high rate biological wastewater treatment process. It operates using the submerged fixed bed process in which microorganisms colonize fixed carrier materials and efficiently break down pollutants such as organic compounds and nitrogen-based substances. The exceptional process stability makes it suitable for a broad range of industrial and municipal wastewater applications, guaranteeing consistently high cleaning efficiency even under challenging conditions. Our modular design allows for flexible configuration in series or parallel, enabling treatment capacities from 10 m³/day up to 5,000 m³/day.