淮南燃煤电厂PM10和PM2.5中多环芳烃的赋存和演化规律

Recently, there has been substantial interest in understanding the occurrence and evolution mechanism of polycyclic aromatic hydrocarbons (PAHs) in the PM10 and PM2.5 emission from the coal-fired power plant, due to that the expected research results would contribute significantly to 1) determining the source apportionment of PAHs from various environmental media; 2) establishing related pollution prediction methods and regulatory measures; and 3) providing scientific basis for developing the related clean coal utilization technology.. Our study will be carried out in the Huainan coal-fired power plants. The PM10 and PM2.5 from flue gas before and after the electrostatic precipitator, as well as the fly ashes from the electrostatic precipitator fields, are collected and analysed. Main research objectives include: 1) exploring the enrichment mechanism and influencing factors of PAHs in the PM10 and PM2.5 during coal combustion; 2) investigating the physicochemical effects of the flue gas transmission and the electrostatic precipitation processes on the migration, transformation, and enrichment of PAHs; 3) obtaining and updating the diagnostic ratios and source apportionment of PAHs. In summary, this research will be useful in enriching and developing the environmental geochemistry theory on the release and control of PAHs in inhalable particles from coal-fired power plant.

对燃煤电厂PM10和PM2.5颗粒中多环芳烃的赋存和演化规律的研究，对于揭示环境介质尤其是大气中多环芳烃的电厂燃煤贡献源、控制并预测燃煤电厂PM10、PM2.5和多环芳烃的排放、发展洁净煤利用技术、以及制定相应的环保法规都具有非常重要和实际的意义。. 本研究拟以淮南市燃煤电厂作为研究对象，通过对电厂除尘器前后烟气PM10和PM2.5颗粒，以及除尘器各电场飞灰的采集与分析，采用环境地球化学新方法和多手段相结合，探寻PM10和PM2.5中的多环芳烃在燃煤过程中的排放特征和赋存规律，并分析烟气传输和静电除尘过程的物理化学作用与多环芳烃自身性质间的响应关系，从而探讨该过程下PM10和PM2.5中多环芳烃的演化规律。在此基础上，拟进一步了解电厂燃煤排放多环芳烃的成分谱轮廓图，从而进一步丰富和发展燃煤电厂可吸入颗粒物中的多环芳烃的排放和控制过程中的环境地球化学理论。

对燃煤电厂PM10和PM2.5颗粒中多环芳烃的赋存和演化规律的研究，对于揭示环境介质尤其是大气中多环芳烃的电厂燃煤贡献源、控制并预测燃煤电厂PM10、PM2.5和多环芳烃的排放、发展洁净煤利用技术、以及制定相应的环保法规都具有非常重要和实际的意义。本研究以淮南市燃煤电厂作为研究对象，通过对电厂排放的烟气PM10和PM2.5颗粒，以及除尘器各电场飞灰的采集和分析，采用环境地球化学新方法和多手段相结合，探寻PM10和PM2.5中多环芳烃在燃煤过程中的排放特征和赋存规律，并分析烟气传输和排放过程中多环芳烃的演化规律。在此基础上，进一步优化了燃煤电厂排放多环芳烃的特征成分指纹谱轮廓图，从而丰富和发展燃煤电厂排放可吸入颗粒物中多环芳烃的环境地球化学理论。