부산대학교 도서관

According to Method 202 proposed by EPA in 2017 and HJ 836-2017 issued by Environmental Protection Department of China, devices of TPM was designed and utilized with which samples of FPM and CPM could be collected simultaneously. FPM, CPM, water soluble ions and elements analysis of CPM in flue gas emitted by three coal-fired power plants named A, B and C were monitored. CFD was used to simulate the diffusion trajectory of PM2.5 formed by CPM emission from fixed sources in stationary weather. The statistical results showed that mass concentrations of TPM emitted by plant A, B and C was 8.63±3.11 mg/m³, 19.05±8.85 mg/m³ and 5.07±1.59 mg/m³, respectively. It was proved that CPM was 90% of TPM and FPM was low mass concentration. Inorganic CPM was dominant in CPM, SO42-, NH4+, Na+ and other water-soluble ions were important components, and the emission of metal elements especially heavy metal should not be neglected. CFD was used to simulate the diffusion trajectory of PM2.5 formed by CPM emission from fixed sources in stationary weather. It was proved that CPM could accumulate below atmospheric boundary layer under meteorological conditions that were not conductive to the diffusion of pollutants, causing PM2.5 accumulation in a short period of time, which was an important factor in the formation of heavy pollutant weather. [ABSTRACT FROM AUTHOR]