Haight M
School of Planning, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
Water Sci Technol. 2005;52(1-2):553-9.
Biological treatment processes including anaerobic digestion (biogasification) and composting are increasingly being considered by waste management officials and planners as alternatives for managing the mainly organic residues of municipal solid wastes (MSW). The integrated waste management model which is based upon the application of life-cycle analysis was employed to compare the environmental burdens of landfilling, composting and anaerobic digestion of MSW at a mid-sized Canadian community. Energy consumption (or recovery), residue recoveries and emissions to air and water were quantified. Scenario comparisons were analyzed to demonstrate that the environmental burdens associated with anaerobic digestion are reduced in comparison with the alternative options. The major benefit occurs as a result of the electricity produced from burning the biogas and then supplying the 'green power' to the local electrical grid.
包括厌氧消化（沼气化）和堆肥在内的生物处理工艺，正越来越多地被废物管理官员和规划者视为处理城市固体废物（MSW）主要有机残留物的替代方案。采用基于生命周期分析应用的综合废物管理模型，来比较加拿大一个中型社区的城市固体废物填埋、堆肥和厌氧消化的环境负担。对能源消耗（或回收）、残渣回收以及空气和水排放进行了量化。通过情景比较分析表明，与其他替代方案相比，厌氧消化的环境负担有所减轻。主要益处来自于燃烧沼气产生电力，然后向当地电网供应“绿色电力”。
