Transportation System for Establishing the Recycle-based Society

在日本，通过生产、消费和进口最终处置的固体废物占国内物质平衡总量的四分之一，每年约为5亿吨。近年来，由于缺乏最终处置场，随着污染的爆发和垃圾处理的中级处理以及非法弃置等社会问题的出现，确保垃圾处理设施的安全成为一个重要的问题。鉴于这种情况，固体废物通过公路网的广域运输从处置短缺的地区运送到中级处理设施和最终处置地点的另一个处置余量区域，构建以有效利用废物为目的的循环型社会，成为不同行业之间减少固体废物总量的迫切需要。要实现循环型社会，必须在消费区、工业区等垃圾排放源与回收厂、最终处理场等垃圾处置区之间建立新的物流体系，并在此背景下，提出利用船舶运输的优势来支持循环型社会的物流体系概念。并通过建立数学规划模型，通过计算二氧化碳排放量，对工业废物海运运输进行了评价。

The quantity of solid waste that is finally disposed of through production, consumption and import occupies 1/4 of the whole in material balance domestically in Japan and is approximately 500 megatons per year. In recent years, because of lack of a final disposal site, outbreak of pollution with intermediate treatment of waste disposal and social problems such as illegality abandonment, to secure a waste disposal facility has become an important problem. On account of these circumstances, the solid waste is carried from the area of disposal shortage to the other area of disposal margin of an intermediate treatment facility and a final disposal site by the wide area transportation that used a highway network.To construct the recycle-based society that aimed at utilizing effectively waste as resources among different industries has become an urgent need in order to reduce the quantity of whole solid waste. For the realization of the recycle-based society, it is indispensable to build a new physical distribution system between waste discharge sources such as a consuming place and an industrial area, and waste disposal areas such as a recycling factory and a final disposal site to be dotted with individually over a wide area.From these backgrounds, a concept of physical distribution system that makes use of advantages of ship transportation in order to support the recycle-based society is proposed. And as a practical example of applying the proposal concept, the industrial waste transportation by shipping is evaluated through the calculation of CO2 emissions by conducting mathematical programming model.