Bezama Alberto, Aguayo Pablo, Konrad Odorico, Navia Rodrigo, Lorber Karl E
Institute for Sustainable Waste Management and Technology, University of Leoben, Peter-Tunner Str. 15, 8700 Leoben, Austria.
Waste Manag. 2007;27(2):228-37. doi: 10.1016/j.wasman.2006.01.010. Epub 2006 Mar 15.
This work presents an analysis on the suitability of mechanical biological treatment of municipal solid waste in South America, based on two previous experimental investigations carried out in two different countries. The first experiment was performed for determining the mass and volume reduction of MSW in the province of Concepción (Chile). The implemented bench-scale process consisted of a manual classification and separation stage, followed by an in-vessel biological degradation process. The second experiment consisted of a full-scale experiment performed in the city of Estrela (Brazil), where the existing municipal waste management facility was adapted to enhance the materials sorting and separation. Expressed in wet weight composition, 85.5% of the material input in the first experiment was separated for biological degradation. After 27 days of processing, 60% of the initial mass was reduced through degradation and water evaporation. The final fraction destined for landfilling equals 59% of the total input mass, corresponding to about 50% of the initial volume. In the second experiment, the fraction destined to landfill reaches 46.6% of the total input waste mass, whilst also significantly reducing the total volume to be disposed. These results, and the possible recovery of material streams suitable for recycling or for preparing solid recovered fuels, are the main advantages of the studied process.
这项工作基于在两个不同国家进行的两项先前实验研究，对南美洲城市固体废物的机械生物处理适用性进行了分析。第一个实验是为了确定康塞普西翁省（智利）城市固体废物的质量和体积减少情况而进行的。所实施的实验室规模的处理过程包括一个人工分类和分离阶段，随后是一个容器内生物降解过程。第二个实验是在埃斯特雷拉市（巴西）进行的一个全规模实验，在那里对现有的城市废物管理设施进行了改造，以加强物料的分类和分离。以湿重组成表示，第一个实验中输入物料的85.5%被分离出来进行生物降解。经过27天的处理，通过降解和水分蒸发，初始质量减少了60%。最终用于填埋的部分占总输入质量的59%，相当于初始体积的约50%。在第二个实验中，用于填埋的部分占总输入废物质量的46.6%，同时也显著减少了待处置的总体积。这些结果以及可能回收适合回收或制备固体回收燃料的物料流，是所研究过程的主要优点。
