Study on Improvment of Municipal Solid Waste Disposal System of Beijing Considering Environmental Load and Cost

Abstract

Beijing's MSW (Municipal Solid Waste) amount has increased rapidly with the rapid economic development and population increase in recent years. However MSW treatment and disposal facilities are not enough due to different reasons such as financial deficit. Environmental pollution in the urban area, resulted from MSW that was not properly disposed, has become serious environmental and social problems. In this study, prediction for MSW generation and collection, and scenario analysis on demand of MSW treatment and disposal facilities in the future, were done as a preliminary discussion of improvement strategies for Beijing's MSW treatment and disposal. In particular, the multiple regression analysis model, which made the rate of urbanization (the non-farm population/the total population) and the rate of the tertiary industry GDP the explanatory variable, and made the MSW collection amount per person the Criterion Variable, had been built. And three scenarios are set under three different conditions respectively, i) all new facilities are landfills, ii) new facilities are incinerators mainly, iii) new facilities are built according to the Beijing's MSW strategies on disposal rates of landfill and incineration in 2020. MSW treatment and disposal facilities' requirement till 2020 are estimated by the three scenarios. In consideration of the intermediate treatment and the final disposal, the MSW disposal flow model including the amount of reclamation and recycling till 2020 are built by the three scenarios. Moreover, energy consumption and CO2 emission by life cycle assessment (LCA) and cost assessment had been applied in the research.