西藏日喀则市垃圾填埋场甲烷产量预测及资源化利用研究

Study of the production prediction and resource utilization of landfill methane in Shigatse in Tibet

为预测评估西藏日喀则市垃圾填埋场甲烷气体产生量及其回收利用价值,通过IPCC(2006)模型对其自2020年封场后的甲烷气体产生量进行了预算,并根据甲烷气体产生量评估其回收利用价值及其通过焚烧利用实现的CO2减排量。结果表明:封场后,填埋气体排放量呈下降趋势;近10年内,甲烷总排放量可达225.286万m^3/a,将甲烷焚烧后可实现CO2减排量4844t;由于填埋场甲烷产生量相对较少,不适宜进行回收再利用,采用火炬焚烧的方式最佳。

This study estimated the production amount and the recoverable amount of landfill gas(LFG) after 2020 years in Shigatse city by using the IPCC 2006 model. The emission reduction and recycling value of methane incineration were calculated according to landfill gas production. The results indicated that landfill gas emissions showed a downward trend after the closure of the site. During these ten years, the total emissions of methane reached 2.252 86 million m3/a,and Methane incineration can reduce CO2 emission by 4,844 tons. Because landfill gas production is relatively limited, it is not suitable for recycling while the torch burning is the best way.