基于生命周期评价理论和SimaPro8.0软件,应用Eco-indicator99生态指数分析法,对某型号LED灯闭环供应链全过程环境影响进行分析评价,并与具有相同功能单位的LED灯开环供应链进行比较.结果表明:功率为21 W的单只LED灯的闭环供应链全过程产生的环境负荷单一值为5.48 Pt. LED灯闭环供应链的3大类环境影响损害值从大到小依次为:人体健康(3.81 Pt)、资源消耗(1.29 Pt)、生态环境(0.381 Pt),表明LED灯闭环供应链整个过程对人体健康的影响最大.另外,相同功能单位的LED灯开环供应链全过程产生的环境负荷为5.71 Pt,与闭环供应链相比环境负荷增长了0.23 Pt,因此闭环供应链更具环境协调性.
Based on the theory of Life Cycle Assessment and SimaPro software(Version8.0), the Eco-indicator 99 method was used to analyze the life cycle impact of a closed-loop LED lamp supply chain and the results were compared with an open-loop LED lamp supply chain which has the same function unit. Results indicated that the environmental single score of a 21 W LED lamp in the entire process of the closed-loop supply chain was 5.48 Pt. The descending order of the three categories of environmental impact was: human health(3.81 Pt)> resources consumption(1.29 Pt)> ecological environment(0.381 Pt), indicating that the whole process of the closed-loop LED lamp supply chain had the most significant impact on human health. In addition, the environmental single score of the open-loop LED lamp supply chain with the same function unit was 5.71 Pt, increasing by 0.23 Pt compared with the closed-loop supply chain, which indicated that the closed-loop LED lamp supply chain was much more environmental friendly than the open-loop LED lamp supply chain.
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