Municipal Solid Waste Disposal System Life Cycle Assessment

On basis of summarizing the evolvement of techniques and the state of life cycle assessment (LCA), the paper establishes a set of LCA model on municipal waste (MSW) treatment system which is supervised by ISO 14040 Environmental Management -Life Cycle Assessment- Pricipals and Framework. In addition, the paper has set up a multi-factors evaluating model of life cycle impact assessment integrating acpects on environmental sustainability, economy capability, society acceptability and technology feasibility. In order to realize environment impact quantification, the calculation of environmental impact potential are introduced. Furthermore, fuzzy comprehensive methods based on relative membership degree have been applied to the MSW life cycle assessment fields for the first time. These methods can provide effective tools for LCA environment impact quantification and multi-factors comprehensive evaluation, by using it, the municipal solid waste treatment will consequentially develop in a more sustainable way.