A PLANT FOR THE TREATMENT OF BIOLOGICAL SLUDGES WITH RECOVERY OF SECONDARY RAW MATERIALS AND ENERGY

摘要

A plant for the treatment of biological sludges with recovery of secondary raw materials and energy comprising, in a system architecture, a feed section (1 ) of biological sludges and a feed section (2) of primary and secondary raw materials required for operation of the plant, characterized in that it comprises a section (3) for the treatment of biological sludges wherein, through a reactor (303), a process of alkaline protein lysis is performed at medium-low temperature, through dosage of a Calcium or Sodium Hydroxide, obtaining a suspension comprising a protein broth and a suspended body composed of said Calcium or Sodium Hydroxide, of the non-solubilized organic fraction and of the particulate of the hydroxides of the polluting metals contained in said sludges and wherein, through a forced filtration device (304) of said suspension, separation of the liquid protein lysate from the cake of suspended particulate is obtained.