A AnoxKaldnesⓇ MBBR Moving bed biofilm reactor for cost-efficient removal of pollutants from municipal and industrial wastewater. High efficiency for BOD, ammonia and nitrogen removal. Aerobic Wastewater Treatment B BAS™ BAS™ is a biofilm and activated sludge solution. The use of the MBBR solution in combination with the downstream activated sludge system creates optimal conditions for organics removal, reduced sludge production and a well-settling sludge from the activated sludge zone. Aerobic Wastewater Treatment U UFLEX™ The new UFLEX™ ultrafiltration systems are skid-mounted, reliable and compact solutions for removing suspended solids, most bacteria and log4 viruses. Membrane Filtration (MF/UF/NF)