TREATMENT SYSTEM OF SEWAGE SLUDGE AND RELEVANT ENERGETIC UTILIZATION FOR COGENERATION.

摘要

The present invention relates to a treatment plant and process of sewage sludge, comprising the following operations: separation of liquid sludge (20) from sewage (10), grinding of urban organic solid waste (100), mixing and homogenization of ground organic solid waste (104) with liquid sludge (20), anaerobic digestion of amalgamated mixture (105) of organic waste and liquid sludge so as to produce biogas (30), centrifugal dehydration of liquid sludge (21 ) from anaerobic digestion to obtain dehydrated sludge (22) with dry product concentration of approximately 25% and feeding of biogas (30) in electricity-generating set (8) comprising a gas engine or turbine (T) and a generator (G) connected to the turbine (T) for production of electricity (40).