| 摘要 |
PROCESS AND INSTALLATION FOR THE TREATMENT OF HOUSEHOLD WASTE AND OTHER SIMILAR WASTE. Process for the treatment of household waste, sewage treatment plant sludge, green area and similar waste, in order ultimately to produce a compost, which process comprises a mechanical pre-treatment phase, followed by a biological treatment phase, then by a refining phase; the mechanical pre-treatment phase comprises a first granulometric sorting stage (1) for the waste, without prior crushing, with the aid of at least one first drum comprising meshes by which coarse elements having a dimension greater than a value Li can be detained in the drum, these coarse elements being directed towards a manual sorting station; a second granulometric sorting stage (2) for elements which have passed through the meshes of the first drum, with the aid of at least one second drum comprising meshes by which elements having a dimension greater than a value L2 less than Li can be detained in the second drum, which elements are directed towards the manual sorting station; and supplementary sortings in respect of elements which have passed through the meshes of the second drum, especially in order to separate light elements and metallic elements. Reception of the waste A and pre-sorting Coarse granulometric sorting (according to type of waste: 200 to 350 mm) Secondary granulometric sorting (according to type 2 of waste: 80 to 120 mm) Air-based sorting 3 Magnetic sorting Sorting by eddy Manual sorting (fro S tl) currents (non(ferous metls)ferrous metals) Crushing 6 mixing and humidification Composting of the 8 organic fractions FIG.1 |
