A AnoxKaldnes BAS™ The BAS™ biological wastewater treatment process is the optimally designed combination of MBBR and activated sludge processes and is a leading edge process used for treatment of industrial and municipal wastewater. Aerobic Wastewater Treatment AnoxKaldnes Hybas™ A biological wastewater treatment solution combining activated sludge and moving bed biofilm reactor (MBBR) processes for nitrogen removal. Aerobic Wastewater Treatment AnoxKaldnes™ MBBR Combining microbiological expertise with decades of experience in wastewater processes enables us to improve on existing systems and to develop new processes. Aerobic Wastewater Treatment B Biosep™ / Neosep™ Biosep™ is an aerobic biological treatment process treating municipal and industrial effluents. Aerobic Wastewater Treatment