山东某规模化养鸡场沼气处理工程温室气体排放量监测分析

Monitoring and Analysis of Greenhouse Gases Emission of the Methane Generating Project in a Chicken Farm

以山东省规模化养鸡场粪便产沼气处理工程为例,分析了鸡粪产沼气处理工程的温室气体排放源,得出该项目每年的温室气体排放量为24,192 tCO2e。其中粪便厌氧沼气发酵(沼气池)中的CH4排放为9,126 tCO2e,沼液的好氧氧化塘处理的CH4排放为5 tCO2e,好氧氧化塘的N2O排放量为13,695tCO2e,项目耗电产生的CO2排放当量为1,366 tCO2e。规模化肉鸡/蛋鸡养鸡场沼气工程的温室气体排放主要集中在粪便厌氧沼气回收处理系统的CH4排放和好氧氧化塘的N2O排放,如果想减少整个项目的温室气体排放,可从这两方面进行进一步技术改革。

Taking the chicken manure management project in Shandong Province as example,the greenhouse gases（ GHG） sources and the monitoring methods were analyzed in this farm based on the methodology（ ACM0010） approved by Executive Board（ EB） of Clean Development Mechanism（ CDM） under United Nation Framework Convention on Climate Change. The total emission of GHG of this project was estimated to be 24,192 t of CO2 e,including 9,126 t of CO2 e of methane emission from the anaerobic digester,5t of CO2 e ofmethane emission from aerobic lagoon,13,695 t of CO2 e of N2 O from aerobic lagoon,and 1,366 t of CO2 e of CO2 emissions from the electricity consumed by the project. The results indicated that the methane emission from the anaerobic digester and the N2 O emission from aerobic lagoon were the main sources of this project. It could be more effective to reduce the GHG emissions by improving these two parts in the future.