Total recycling of CCA treated wood waste by low-temperature pyrolysis

摘要

A system to turn a potentially harmful stream of solid waste into a set of substreams with either commercial value or highly concentrated residual streams is presented. The waste which is considered is metal impregnated (in particular Chromated Copper Arsenate (CCA) treated) wood waste and timber, such as telephone poles, railway sleepers, timber from landscape and cooling Towers, wooden silos, hop-poles, cable drums and wooden playground equipment. These waste streams sum up to several 100,000 Tons of material per year currently to be dumped in every major country of the European Community (EC).