基于入户调查的贵阳市生活燃煤排放清单

A sampling survey on residential coal burning was undertaken to further understand its air pollution in Guiyang of 2017, which could also provide recommendations for air pollution control in southern mountainous urban areas. According to statistical analysis, the variation of precision of the resident population and domestic coal consumption was small from 2016 to 2018. The 1 km×1 km-gridded emission inventory of air pollutants was established by adopting the emission coefficient method and GIS technology from domestic coal combustion in Guiyang City in 2016. The results showed that the domestic coal combustion in the whole city ^was about 55.9×10⁴ t, and the coal combustion per unit area was 69.5 t•km^-2, There were significant differences of domestic coal combustion in different districts. From the perspective of total coal combustion, Kaiyang County was the largest, and Yunyan District was the smallest; In terms of coal combustion per unit area, Yunyan District was the largest, and Xifeng County was the smallest. The emissions of PM₁₀, PM_2.5, SO₂, NO_x, VOCs, CO, OC, and BC from domestic coal combustion in the city were 1230.5, 783.0, 6963.5, 615.3, 1006.8, 39096.4, 55.9 and 3.9 t, and the emissions per unit area were 153.0, 97.4, 865.7, 76.5, 125.2, 4860.7, 7.0 and 0.5 kg•km^-2, respectively. The emission of pollutants from domestic coal combustion showed significant seasonal variation, and the emission of pollutants in the heating season was higher than the non-heating season. In terms of spatial distribution, air pollutant emissions were mainly concentrated in Yunyan District, Nanming District, the middle and south of Baiyun District, the southeast of Guanshanhu District, the southwest of Wudang District and the northeast of Huaxi District, which were basically distributed consistent with the residents' living areas. The sample size of the survey covered 1.5% of the total households, and the proportion of households using coal as their living energy was about 38.1%. The average coal combustion per household was (1.158±0.010) t•a^-1, and the overall range of emission inventory uncertainty is -82.6%~201.0%.