| 摘要 |
<p>The invention concerns a method for irreversibly destroying securities and the like previously cut and/or shredded, whereby said securities are pre-treated in at least a hydrolysis and acidogenesis tank (1) maintained at a pH less than 6 and at a temperature between 30 and 60 °C, preferably between 30 and 40 °C, and then gradually transferred to one or several methanization and acetogenesis tank (2) maintained at a pH value between 7.2 and 8 using basic substances or buffers, to be digested therein in anaerobic medium at a temperature between 50 and 60 °C and transformed in particular into methane, and carbon dioxide, the transferred part being immediately replaced by the non-pretreated mixture from the shredding unit and mixture (3) comprising said securities.</p> |
