Thermal hydrolysis is a process technology applied in wastewater treatment plants with anaerobic digestion. It treats sewage sludge and other biowastes with steam under pressure to make them easier to break down during digestion. It comes with multiple cost-saving and environmental benefits: coupled with anaerobic digestion, it increases biogas production, reducing the use of nonrenewable energy sources, and produces easy-to-handle, nutrient-rich biosolids that are suitable for all outlets.