PROCESS AND PLANT FOR THE DISPOSAL OF TIMBER TREATED WITH TOXIC SUBSTANCES

摘要

In order to remove toxic substances from timber for disposal, the timber is ground and a suspension of water, a water-soluble organic solvent and the ground timber is centrifuged in a centrifuge (2). The mixture or water and solvent is extracted from the centrifuge (2) and, after the toxic substances in the mixture have been separated and the organic solvent has been distilled off from the water, the water is reintroduced into the circuit of the centrifuge (2) in order to form a fresh suspension of water, organic solvent and the timber (12) separated in the centrifuge (2). This process is repeated until the timber (12) has been freed from toxic substances.