The Adaptation of 3R Calculation and Cost-Effectiveness Analysis for the Recycling System of ELVs in Taiwan

• Main Authors: Chi-Hsien Huang, 黃繼賢
• Other Authors: Sheng-Lung Lin
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/64576949472466772589

碩士 === 朝陽科技大學 === 環境工程與管理系碩士班 === 96 === Nowadays, the increase of vehicles is associated with the industrial growth and demands of public communications. In addition to the consumption of tremendous energy, the wasted vehicles caused mass derived materials, after the vehicles are dismissed, which may cause environmental impacts when they were handled carelessly. The roaring price of steel, recently, sends a clear message of the resource scarcity to human being. Through dismantling wasted vehicles effectively, it is an opportunity to recycle the valued secondary materials, which forms a quasi-closed-loop cycle. The maximizing use of materials not only meets the requirement of sustainable development, but also alleviates the environmental impacts caused by wasted vehicles. It is a win-win strategy for both the environmental protection and economic growth. This study focused on the recycled materials streams of end-of-life vehicles, and the optimum procedures for recycling valued materials. There were four makes of passenger cars selected in the study due to its engine volume. The selected cars were dismantled on the site and the inventories of recovered materials were conducted based on the method of mass flow analysis. In order to understand the green design performance of four cars, the adaptation of EU 3R calculation was also implemented. Finally, we employed the cost analysis to find out the optimum dismantle process for wasted cars. We hope the results could be a reference for the decision-making process. The results show that the values of the recycled materials decides the interests of recycling procedures on the dismantling sites. For example, waste shells, mass irons, and waste aluminum are the most wanted recycled materials for a waste car, which contributes 89.3% ~ 91.3% by weight, and 79.81% ~ 86.03% of the total values. The unwanted materials, such as waste glasses and fibers, are not recycled in the site. For 3R calculations, four selected cars could meet the requirements of year 2006 recycling rate, but could not meet that of year 2015. They all, however, meet the requirements of years 2006 and 2015 recovery rates. In the scenario of the complete dismantling process, all selected cars meet the year 2006 requirements, but they could not meet the requirements of year 2015 recovery rate due to the disposal of waste glasses and fibers. Cost analysis result shows, while disassembling to the engine gearbox in accordance with EPA''s norm, 49.49% for total cost not to account for, and unable to reach effective balance. It will also increase waste derivatives and pollutants when they were disposed of or incinerated. When the dismantling to the bellows of waste car (about 210 minutes), it could reach a cost-effective of 10,329 NTD, which contributes about 76.10% of profit and makes a improving profit of 26.61%. We concluded that the optimum dismantle procedure of a waste car should stop at the dismantling of bellows.