Product listing Following the successful commercialisation of the Exelys™ Thermal Hydrolysis process, Veolia has developed a standard series of package plants. Resources Product Range Resources Downloads PDF Package Exelys™ Datasheet (398.48 KB) Product Range Exelys™ Exelys™ is an innovative and complete sludge reduction solution that works in continuous mode, combining thermal hydrolysis and anaerobic digestion. Sludge treatment