宁夏宁东能源化工基地环境空气质量污染水平分析

Analysis of the Air Quality Situation in Ningdong Energy and Chemical Industry Base

利用宁夏宁东能源化工基地4个环境空气质量自动监测站点2015—2017年监测数据资料,研究了该基地近3 a空气质量状况,并分析相关影响因素。结果表明,2015—2017年,影响宁东能源化工基地空气质量的污染物按污染负荷由大到小排列依次为PM_(10)、PM_(2.5)、O_3、NO_2、SO_2、CO,且以PM_(10)为首要污染物,PM_(10)、PM_(2.5)和O_3三者的污染负荷系数之和接近70%;除O_3外,其他5项污染物月均质量浓度变化较为一致,冬、春季节污染较重,夏、秋季污染轻;该基地环境空气质量综合指数连续3 a变化不大,表明仍需对其加大环境管理力度,持续改善其环境质量。

The status and influencing factors of the air quality in Ningxia Ningdong energy chemical base were studied based on the 4 sites monitoring data in recent three years from 2015 to 2017.Results showed that PM10 was the primary pollutant,followed by PM2.5,O3,NO2,SO2 and CO.Besides,the sum of concentration percent of PM10,PM2.5 and O3 reached 70%.The mean monthly concentration of pollutants except O3 were consistent and showed heavier in winter and spring than in summer and autumn.The air quality indexes changed slightly in three years.So there still need more efforts for improving the environment.