摘要
大气中温室气体(GHG)浓度的上升导致全球气候变化,其中,污水处理厂GHG的排放不容忽视。我国污水处理厂的数量及处理能力逐年攀升,针对污水处理厂GHG排放的研究具有重要意义。该文将污水处理厂GHG排放源划分为直接排放部分、能耗部分、物耗部分及其他部分,提出每部分相应的GHG排放折算因子,构建了相应的评价体系,以指导污水处理厂的低碳运行。利用该评价体系评估了北方一座污水处理厂的全厂GHG排放特征和机制,并对沼气回收前后的排放情况进行比较。结果表明,该厂CO2排放量为5.68×105 kg/d。其中直接排放占排放总量的60%以上;通过沼气产能回收可大量降低GHG排放。
Increasing atmospheric greenhouse gas （GHG） concentrations have led to climate change and global warming, including GHG emissions from wastewater treatment plants. In recent years, the number of treatment plants has rapidly increased in China, making the study of GHG emissions from treatment plants extremely important. GHG emissions from treatment plants can be divided into direct GHG emissions, GHG emissions from the energy source and material consumption, and other sources. The GHG sources of each part were assessed to calculate the total GHG emissions of a municipal treatment plant in North China before and after biogas recovery and reuse as a fuel to identify critical factors for GHG emissions. The average CO_2 emissions from the plant were 5. 68 ×X l0^5 kg/d with more than 600/00 generated from direct emissions. Biogas recovery significantly reduces the GHG emissions. The system can he used to guide treatment plant operation to reduce carbon emissions.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第4期473-477,共5页
Journal of Tsinghua University(Science and Technology)
基金
环保公益性行业科研专项(201109042)
关键词
温室气体
污水处理厂
碳排放
greenhouse gas
wastewater treatment plant
carbonemission
