A Athos™ Athos™ is a sludge hydrothermal oxidation (HTO) process that turns organic sludge with low dry matter into an essentially solid mineral. Sludge treatment B Biobed® Advanced (EGSB) Biobed® Advanced (EGSB): Tall, slender reactor for anaerobic wastewater treatment. Converts organic pollutants to biogas (mainly CH4, CO2) using bacteria. Supports energy transition and reduces carbon footprint. Anaerobic Wastewater Treatment