Presentation of the innovative Mutag BioChip(TM) high-performance biofilm carrier which provides superior bio-degradation rates in biological wastewater treatment thanks to its extremely large surface area of more than 3,000 m2/m3. This particular biofilm carrier designed for most efficient biological treatment of industrial wastewater, municipal sewage and water in aquaculture systems can be used for advanced COD/BOD removal, nitrification and denitrification at highest capacity.