Sewage sludge sanitising process - by electron or gamma irradiation preceded by mechanical dewatering

摘要

Fluids such as sewage sludge are sanitised by irradiation with electron beams or gamma rays. A dewatering section, pref. based on the pressurised endless belt screen principle, procedes the irradiaton section. The volume is reduced by the mechanical dewatering so that 35% less costs arise for the irradiation. The irradiation being the last stage, the risk of re-infection is reduced.