肇庆市大气污染特征及污染源分析

Treatment Technology and Application Prospect of Volatile Organic Pollutants in Chemical Industry Park

本研究探讨了2020年和2021年肇庆市大气污染特征及其对人体健康的风险,并结合当地发展情况进行了污染源分析。结果表明:肇庆市大气污染严重,端州区、高要区、广宁县、德庆县和四会市是PM2.5和PM10污染最严重的地区,只有鼎湖区低于CAAQS PM2.5二级标准,并略高于PM10标准;颗粒物(PM)是主要污染物,但二氧化氮和臭氧近年来表现出主导趋势。基于综合空气质量指数(AAQI)的健康风险评价显示,肇庆市处于相对高风险水平,在污染物中,贡献最大的是PM,其次是二氧化硫和臭氧。来源分析表明,除自然因素外,城市化、人口规模、民用汽车、煤炭重工业和高能耗是大气污染的主要驱动因素。因此,应加强城市绿化,大力调整和优化产业结构,制定大气污染特别是PM和臭氧的多领域协同治理机制。

In this study,the characteristics of air pollution and its risk to human health in Zhaoqing City in 2020 and 2021 were discussed,and the pollution sources were analyzed combined with the local development situation.The results show that the air pollution of Zhaoqing City is serious,Duanzhou District,Gaoyao District,Guangning County,Deqing County and Sihui City are the most serious areas of PM2.5 and PM10 pollution,only Dinghu District is lower than the CAAQS PM2.5 level 2 standard,and slightly higher than the PM10 standard.Particulate matter(PM)is the main pollutant,but nitrogen dioxide and ozone have shown a dominant trend in recent years.Health risk assessment based on the Comprehensive Air Quality Index(AAQI)shows that Zhaoqing City is at a relatively high risk level.Among the pollutants,PM contributes the most,followed by sulfur dioxide and ozone.Source analysis shows that in addition to natural factors,urbanization,population size,civilian vehicles,coal heavy industry and high energy consumption are the main drivers of air pollution.Therefore,we should strengthen urban greening,vigorously adjust and optimize the industrial structure,and formulate a multi-field collaborative governance mechanism for air pollution,especially PM and ozone.