厨余垃圾不同处理模式碳减排潜力分析

通过IPCC的质量平衡方法对填埋、好氧堆肥、厌氧发酵产沼发电、“压榨预处理+干组分焚烧+湿组分厌氧发酵”等不同厨余垃圾处理组合模式进行了碳减排潜力分析.研究发现,“压榨预处理+干组分焚烧+湿组分厌氧发酵”组合模式碳减排潜力最大,相对于填埋处理, CO2减排量为947.6kgCO2/t.以深圳市为例,如果2011年厨余垃圾全部进行“压榨预处理+干组分焚烧+湿组分厌氧发酵”,全年可实现上网发电4.5亿kW·h,同时减少CO2排放量201.4万t.

Analysis of potential carbon reduction for different food waste processing mode

Based on the mass balance method introduced by IPCC, this article analyzed reduction potential of carbon reduction on landfilling, aerobic composting, anaerobic digestion and “pressure extrusion pretreatment and dry fraction burning and wet fraction anaerobic digestion”. The study found that “pressure extrusion pretreatment and dry fraction burning and wet fraction anaerobic digestion” has the great potential of carbon reduction, which is 947.6kg CO2/t, compared to the landfilling. Taking Shenzhen City for example, if processing of food waste adopt the mode of “pressure extrusion pretreatment and dry fraction burning and wet fraction anaerobic digestion” in 2011, it would generate electricity for 450million degrees and reduce carbon emissions by 2.014million tons throughout the year.