PASTEURIZING SLUDGE TO EXCEPTIONAL QUALITY

摘要

An anaerobic process in accordance with the present invention includes the step of digesting an organic substrate in a first anaerobic reactor 8 to provide reactor contents comprising solids and liquid products of digestion. The process also includes a step of removing a portion of the reactor contents (2), and a step of pasteurizing (10, 11) all or part of the removed reactor contents by direct contact with a hot or inhibitory fluid to cause pathogen destruction. The fluid may be in a gaseous or liquid phase and the fluid may have inhibitory effects which causes the organisms to undergo lysis.