In order to quantitatively assess the impact of new large-scale industrial projects in Zhanjiang City on its air quality,the article estimated the emissions of major air pollutants from new large-scale industrial projects since 2015,and quantitatively evaluated the impacts of their emissions on PM2.5 and ozone concentrations by using WRF-CMAx.The results showed that total emissions of SO2,NOx,PM10,PM2.5 and VOCs of the new projects were 1 415.8,7 436.1,1 417.3,629.5 and 2 469.6 tons respectively,mainly from iron making,crude oil processing and petroleum products manufacturing industries,and distributed in the Dongdao Island.The simulation results showed that under meteorological conditions in 2021,the contri-bution of new projects to the average annual PM25 concentration of each national control monitoring points for ambient air quality was 0.136～0.283 μg/m3,and the city's average value was 0.210 μg/m3,with the biggest impact in July.The con-tribution to the maximum 8-hour sliding average of ozone and the maximum hourly ozone concentration were 0.042～4.557 μg/m3 and 1.274～3.484 μg/m3,the city average were 0.092 and 5.463 μg/m3,and with the largest contribution in April and July,respectively.Under meteorological conditions in September 2022,the contribution concentration of the new projects to the average annual PM2.5 of each national control monitoring points for ambient air quality was 0.384～0.693 μg/m3,and the average value of the city is 0.538 μg/m3.The contribution to the maximum 8-hour sliding average of ozone and the maximum hourly ozone concentration were-0.008～1.113 μg/m3 and 0.003～8.354 μg/m3,and the city average was 0.389 and 1.573 μg/m3,respectively.This study can provide scientific basis for the prevention and control of air pollution in Zhanjiang City.
关键词
新增大气污染物排放/空气质量/影响评估/湛江市
Key words
newly increased air pollutant emission/air quality/impact assessment/Zhanjiang City
维普
万方数据