[VOCs Removal and Emission Monitoring of Beijing Bulk Gasoline Terminals in 2012-2019].

Bulk gasoline terminals are an important emission source of volatile organic compounds (VOCs) in cities. Beijing started to promote the installation of oil and gas recovery devices at oil storage terminals in 2006 to reduce VOCs emissions, since then VOCs emissions from the terminals have been monitored by the municipal government every year. This paper analyzes the VOCs emission characteristics of oil storage terminals in Beijing from 2012 to 2019. We found that the VOCs import concentration was 165.3 g·m-3 in 2019 and had experienced a decline-rise-decline pattern during 2012-2019. The emission concentration was 7.3 g·m-3 in 2019 and had declined continuously during the preceding eight years. The removal efficiency of VOCs of the gas recovery devices tended to be stable and ranged from 45.5% to 100%. Although the emission concentration had decreased significantly, the removal efficiency of the recovery unit at the oil storage terminals had decreased. Therefore, this paper proposed to strengthen process management, the inspection of the service life of the oil and gas recovery units, and check and maintain records. In addition, the removal efficiency index should be included in the scope of law enforcement and "double index" requirements should be implemented This paper will provide a scientific basis for the future development of atmospheric improvement measures.