The two‐year monitoring (732 days) of operational methane emissions from pressure relief valves of the gasholders from an agriculture biogas plant is presented. The monitoring aimed at the identification of major factors influencing the emissions and the effect of mitigation measures deduced from the results. The determined emission factors from the valves of both gastight covered digesters are 1.8 and 0.6 % CH₄ loss for the first and second year of investigation, respectively. The emission rates strongly depend on seasonal factors like (fast) changes in ambient air temperature as well as the capacity utilization of the combined heat and power and the operation of the gasholders. The implemented mitigation measures significantly reduced the measured methane emissions in the second year of the investigation.

中文翻译：

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监测和减少沼气厂泄压阀产生的甲烷排放

介绍了为期两年（732天）的监测值，这些监测值来自农业沼气厂的储气罐压力释放阀的甲烷排放量。监测旨在确定影响排放的主要因素以及从结果中推论出的缓解措施的效果。在调查的第一年和第二年，两个气密性沼气池的阀门确定的排放因子分别为CH ₄损失1.8％和0.6％。排放率在很大程度上取决于季节性因素，例如周围空气温度的（快速）变化，热电联产的容量利用率以及储气罐的运行。实施的缓解措施在调查的第二年显着减少了测得的甲烷排放量。