Environmental Impact Assessment Of Technology Based On Life Cycle Assessment

As scientific technology develops rapidly, it brings a lot convenience for human life and social development. Another aspect is that it also brings a series of negative impacts for the eco-environment, and thus aggravates the problem of environmental production, energy crisis, and resource shortage. Considering the prevention and elimination of disadvantages caused by technological development, especially the environmental impact, the variety of environmental impacts by the implementation of technology is obviously important. This article focuses on environmental impacts of technology, with the research objective to understand the disadvantageous environmental impacts during the implementation process of available production technology. It thus provides some supportive information for decision-makers by analysis, assessment and comparison, and also provides an opportunity for improving how technology progresses.This article uses Life Cycle Assessment (LCA) as its theoretical base for the environmental impact of technology and puts forward a technology environmental impact assessment system which is based on a streamlined LCA designed to improve the progress of technology and policy making. Based on different decision needs, this assessment system can be divided into two impact assessment methods which are the method of Streamlining within the Current LCA Framework and the method of FUZZY AHP. This article uses lead smelting technology as a case study and assesses smelting technology by the methods mentioned above.The study which uses lead smelting of an ISP smelting furnace, oxygen top-blown smelting and oxygen bottom-blowing smelting as objectives by using the method of FUZZY AHP shows that the biggest membership grade of ISP smelting furnace is " serious," the biggest membership grade of oxygen top-blown smelting is "intermediate," the biggest membership grade of oxygen bottom-blowing smelting is "intermediate." The study which used lead smelting of an ISP smelting furnace as its objective by using the method of Streamlining within the Current LCA Framework and the impact assessment method choose Eco-indicator99. The result which was obtained by LCA software Gabi4 showed that the environmental impact indicators under three models are 66.9315Pt(HA),63.5442Pt (EE),748.8711Pt (Ⅱ).Finally, this article discusses features and the application range of two methods which are based on different decision needs by analysis, comparison of methodologies,and case studies.