| People’s material life becomes better with the rapid development of global industry and manufacture, whereas following gradually depleted of resources and serious environmental pollution. It is very important to control and reduce the product’s environment load. The green design and manufacturing of product become the topic attracting the attention of human being all over the world. PVC become the preferred electric wire and widely used in daily life, as a result of good electrical insulation and high cost performance. A large number of waste PVC cables were abandoned with electric appliances abandoned. The disposal of landfill or incineration would improve the environmental load. Research of life cycle assessment (LCA) for PVC cable production and waste disposal has profound guiding significance.In this paper, Gabi6.0software was applicated on the reseach to compare the two main ways of domestic PVC manufacturing, calcium carbide-made PVC and ethylene-made PVC. Compared with the two main ways of PVC manufacturing, it made resource consumption and pollutant emissions in all stages clear, and had a preliminary assess on the demestic PVC manufacturing from the perspective of enterprise producing. Control and reduce the environmental pollution on the PVC manufacturing from the source of the production. The result shows that, the environmental impact value to global warming from calcium carbide method and ethylene method were5600CO2-Equiv and3460CO2-Equiv, respectively.Which mainly comes from the acethlene-made stage and vinyl chloride-made stage, it accounted for70.5%and44.6%of their total environmental impact value. The environmental impact value of calcium carbide-made PVC and ethylene-made PVC in acidification potential was respectively13.2kg SO2-Equiv and25.2kg SO2-Equiv, it accounted for64.2%and69.8%of their total environmental impact value. In the eutrophication, the environmental impact potential value of hydrogen chloride-made stage in calcium carbide-made PVC was in the first place, up to0.286kg Phosphate-Equiv, accounted for49.6%of the total environmental impact potential value. In the ozone layer depletion potential, the impact of the acetylene-made stage was obvious, up to3.8×10-7kg R11Equiv,accounted for88.4%of the total environmental impact value. In the depletion of non-renewable resources, the impact of calcium carbide-made PVC was higher, the acetylene-made stage had made a contribution of the environmental impact potential value was67600MJ accounted for75.6%of the total value89400MJ. Contribution of ethylene-made stage in aquatic toxicity values is particularly significant, in which ethylene had made a contribution for the3.31×10-10kg DCB-Equiv accounted for70.4%of the total environmental impact value.In this study, waste PVC cable samples were dismantled and splitted into three parts such as cable jacket, cable endothelial and copper. The leaching toxicity of polycyclic aromatic hydrocarbons (PAHs) from cable sheath was studied using China’s Extraction Procedure for Leaching Toxicity of Solid Wastes(HJ/T299-2007). The above experimental results were used as the output data of waste PVC cable LCA of disposal process. The entire life cycle of domestic waste PVC cable was evaluated comprehensively by LCA. The influences of resource consumption and waste discharge were analyzed and evaluated. The results indicated that the release of PAHs using landfill process of waste PVC cable was significant,the environment load of the production process of acetylene, hydrogen chloride and ethylene were particularly prominent.. Besides, the release of PAHs using landfill process of waste PVC cable had a bad effect to aquatict, which accounted for87%of total freshwater aquatic ecotoxicity. The toxic pollutants such as dioxin in PVC’s combustion process would cause serious the environment problem while incinerated.The LCA model of PVC cable was proposed using software Gabi6.0with the analysis data of the PVC production, usage and waste PVC disposal in China. The model included the goal and scope definition, inventory analysis, life cycle impact assessment three parts. The environmental impact analysis of global warming effect, acidification, eutrophication, ozone layer depletion, abiotic depletion fossil and freshwater aquatic ecotoxicity were done using CML2001method. Based on research projects, to provide the technical supports and guidancesfor environmental management on China’s PVC manufacturing and disposal, we proposed the measures to improve the environmental impact of PVC manufacturing in China. |
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