小城镇污水处理厂生命周期的碳排放评估

Assessment of Life-cycle Carbon Emission for Sewage Treatment Plants in Small Towns

温室气体(GHG)浓度的上升导致全球气候变暖已成为人类社会共识,污水处理厂碳排放是主要排放源之一,其中,小城镇污水处理厂碳排放量不容忽视。基于生命周期(LCA)评价理论,界定了小城镇污水处理厂生命周期碳排放的评估范围,构建了相应的评估体系。根据该体系评估了四川某小城镇污水处理厂的碳排放情况,结合评估结果,探讨了减少小城镇污水处理厂碳排放的途径,为其减排提供参考依据。

It has become social consensus that increasing atmospheric greenhouse gas（ GHG） concentrations has led to climate change and global warming. Carbon emission from wastewater treatment plants is one of the major sources of emissions,including emissions from sewage treatment plants in small towns. Based on the life cycle assessment（ LCA） theory,this paper defined the scope of assessment and established corresponding assessment system. According to the assessment system,evaluated the carbon emissions of a small town sewage treatment plant in Sichuan. Finally,combined with the evaluation result,the potential ways for carbon emission reduction in small town sewage treatment plants were discussed,to provide scientific basis for the carbon reduction in small town sewage treatment plants.