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 Barrel™ A safe, compact and digital RO desalination system. Its plug-and-play approach helps to secure a fast-track schedule while its embedded digital sensors provide remote monitoring. Membrane Filtration (MF/UF/NF)