火电厂排放源对张家港市冬季空气质量的影响

发布时间：2018-04-26 02:15

本文选题：张家港市 + 火电厂排放源　；参考：《解放军理工大学学报(自然科学版)》2016年04期

【摘要】：为了解张家港市火电厂排放源对空气质量的影响程度,利用WRF-Chem空气质量模式分别模拟了采用2013年火电厂排放源和2016年预测情景排放源的张家港市冬季各污染物的浓度,分析了现状以及预测排放情景下火电厂对污染物浓度的贡献。结果表明:2013年张家港市火电厂排放源对冬季SO_2,NO_x,PM_(2.5),PM_(10)的小时浓度贡献为60%,50%,14%,20%,火电厂排放源的水平影响范围为5~10km,垂直高度可延伸至2km,受烟流抬升高度的影响,电厂源对100~200m高度污染物浓度的贡献率最大,数值可以达到地面浓度贡献率的1.5倍;2016年采取减排措施后的预测情景表明,各污染物浓度明显减小,火电厂排放源对SO_2,NO_x,PM_(2.5),PM_(10)的小时浓度贡献最大值分别降低到25%,25%,5%,8%,而在垂直高度上,各污染物浓度下降比例最高为18.0%,15.5%,2.1%,3.8%。
[Abstract]:In order to understand the influence of emission sources on air quality in Zhangjiagang thermal power plant, the concentrations of pollutants in winter of Zhangjiagang City in winter were simulated by using WRF-Chem air quality model, respectively, using the emission sources of thermal power plants in 2013 and forecast scenarios of emission sources in 2016. The present situation and the contribution of thermal power plants to pollutant concentration in emission scenarios are analyzed. The results show that in 2013, the emission source of Zhangjiagang City Thermal Power Plant contributed to the annual concentration of so _ 2NOx/ PMT _ (2.5) / PMSP _ 10 in winter. The contribution of the hourly concentration of the emission source to so _ _ _ The contribution rate of power plant source to 100 ~ 200m high pollutant concentration is the largest, and the value can reach 1.5 times of the surface concentration contribution rate. The forecast scenario after adopting emission reduction measures in 2016 shows that the concentration of each pollutant decreases obviously. The maximum value of the contribution to the hourly concentration of so _ 2NOX _ X _ I _ I _ P _ (2.5 / P) and the maximum _ _ _
【作者单位】：环境保护部南京环境科学研究所;南京大学大气科学学院;
【基金】：国家自然科学基金资助项目(41305006) 江苏省自然科学基金资助项目(BK2012314)
【分类号】：X773;X51

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