金昌市人居环境空气质量评价及预测研究

发布时间：2018-05-09 09:05

本文选题：空气质量 + 评价　；参考：《兰州大学》2013年硕士论文

【摘要】：目的分析2007-2012年金昌市主城区SO2、NO2、PM10、空气污染指数、空气综合污染指数的变化规律及其影响因素,并预测未来6年空气质量的变化趋势,评价金昌市人居环境空气质量,进而有针对性地提出环境空气质量改善建议和措施。方法对2007-2012年金昌市主城区空气自动监测系统的监测数据进行统计分析,运用空气污染指数法和空气综合污染指数法对金昌市空气质量进行评价,并找出主要污染物的主要来源；采用灰色预测模型对金昌市未来6年的空气质量变化趋势进行预测。结果 2007-2012年金昌市主城区SO2年均浓度呈显著下降趋势,NO2和PM10年均浓度下降趋势不明显,但6年来SO2一直是金昌市的首要污染物。金昌市主城区空气综合污染指数呈显著下降趋势,良好以上天数占全年的比率总体呈上升趋势。SO2和NO2浓度在第一季度和第四季度高于第二、三季度,PM10浓度在第一、二、四季度均较高,第三季度略低。3个监测点间SO2年均浓度无显著性差异,运输部监测点NO2年均浓度低于市科委监测点,公司二招监测点PM10年均浓度显著低于其它两个监测点。预测结果显示,未来6年金昌市空气综合污染指数及主要污染物浓度均呈逐年下降趋势。结论金昌市人居环境空气质量逐年好转,但变化幅度不大。工业生产废气排放是金昌市空气污染的主要来源。金昌市应继续大力推进“工程减排”、“结构减排”和“管理减排”等大气污染综合治理措施,有针对性的加强SO2治理工程,提升金昌市人居环境空气质量。
[Abstract]:Purpose This paper analyzes the variation law and influencing factors of so _ 2O _ 2O _ 2N _ (10) PM10, air pollution index and air comprehensive pollution index in Jinchang City from 2007 to 2012, and predicts the changing trend of air quality in the next six years, and evaluates the air quality of residential environment in Jinchang City. Furthermore, suggestions and measures for improving ambient air quality are put forward. Method The monitoring data of the automatic air monitoring system in the main urban area of Jinchang City from 2007 to 2012 were statistically analyzed. The air quality of Jinchang City was evaluated by using the air pollution index method and the comprehensive air pollution index method, and the main sources of the main pollutants were found out. The grey prediction model is used to predict the trend of air quality change in Jinchang city in the next 6 years. Result From 2007 to 2012, the average annual concentration of SO2 in the main urban area of Jinchang City showed a significant downward trend. The average annual concentration of no _ 2 and PM10 was not obvious, but SO2 had been the main pollutant in Jinchang city in the past six years. The comprehensive air pollution index of Jinchang city showed a significant downward trend, and the ratio of good days to the whole year showed an upward trend. The concentrations of SO2 and NO2 in the first and fourth quarters were higher than those in the second quarter, and the concentrations of PM10 in the third quarter were in the first and second quarters, and the concentrations of PM10 in the third quarter were in the first and second quarters. There was no significant difference in the average annual SO2 concentration among the three monitoring points, the average annual NO2 concentration of the monitoring points of the Ministry of Transport was lower than that of the monitoring points of the Municipal Science and Technology Commission, and the average annual concentration of PM10 in the two monitoring points of the company was significantly lower than that of the other two monitoring points. The forecast results show that the comprehensive air pollution index and the main pollutant concentration in Jinchang city will decrease year by year in the next 6 years. Conclusion Jinchang City living environment air quality improved year by year, but the change is not big. Exhaust gas emission from industrial production is the main source of air pollution in Jinchang City. Jinchang should continue to push forward the comprehensive measures such as "engineering emission reduction", "structural emission reduction" and "management emission reduction", so as to strengthen the SO2 treatment project and improve the air quality of residential environment in Jinchang City.
【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：R122.1

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