基于全生命周期方法的麻城市密集型村镇生活垃圾处理模式评价

To evaluate the environmental impact of densely populated village and town domestic waste under different treatment modes, the full life cycle assessment approach was used as a research tool. The densely populated village and town of Macheng in Hubei Province was the focal point of the investigation. The various types of pollution generated during the treatment process under different modes were calculated for their potential environmental impact according to five environmental impact categories: global warming, acidification, eutrophication, photochemical ozone synthesis, and ecological toxicity. Finally, by comparing the total potential environmental impact under different modes, suitable densely populated village and town domestic waste treatment modes and suggestions were given. The results showed that the potential environmental impact of Macheng’s village and town domestic waste in the existing mode, two-category mode (populated area), two-category mode (sparsely populated area), three-category mode (populated area) and three-category mode (sparsely populated area) were 4.75×10⁻², 7.91×10⁻², 1.50×10⁻², 2.77×10⁻², and 1.54×10⁻², respectively. It can be seen that screening and reducing densely populated village and town domestic waste has a significant effect on energy conservation and emission reduction while being more environmentally friendly and helping to reduce economic costs.