某精细化工园区VOCs污染特征及来源解析  

Characteristics and source analysis of VOCs in a fine chemical industrial park

作　　者：封豆豆 吴成志 陈必新 王俏丽[3] 张士汉 陈建孟 李伟[3] FENG Dou-dou;WU Cheng-zhi;CHEN Bi-xin;WANG Qiao-li;ZHANG Shi-han;CHEN Jian-meng;LI Wei(College of Environment,Zhejiang University of Technology,Hangzhou 310014,China;Trinity Consultants,Inc.(China Office),Hangzhou 310012,China;College of Chemical and Biological Engineering,Institute of Industrial Ecology and Environment,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江工业大学环境学院,浙江杭州310014 [2]三捷环境工程咨询(杭州)有限公司,浙江杭州310012 [3]浙江大学化学工程与生物工程学院工业生态与环境研究所,浙江杭州310027

出　　处：《高校化学工程学报》2021年第5期935-942,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(21876157);国家重点研发计划(2018YFC0214100)。

摘　　要：为实现精细化工园区精准溯源,基于某园区2018年3~12月挥发性有机物(VOCs)在线监测数据及气象监测数据,分析整体污染水平和组分特征,利用正定矩阵因子分解(PMF)模型开展源解析研究,并结合条件双变量概率函数(CBPF)对主要排放源进行精准定位。结果表明,园区VOCs平均体积分数为(381.92±183.62)×10-9,优势组分为卤代烃,优势物种依次为二氯甲烷、甲苯、1,2-二氯甲烷等,体现了精细化工园区的高VOCs污染特性;PMF分析表明精细化工排放源贡献为59.18%,道路移动源贡献为27.48%,是园区制定管控措施需要重点考虑的2个方面;CBPF分析表明园区东南部和东北部重污染企业分布较多,园区周边敏感区域易受园区高浓度VOCs排放的影响。In order to precisely trace pollution sources in fine chemical parks, overall pollution level and component characteristics were analyzed based on VOCs online monitoring data and meteorological monitoring data of a fine chemical park from March to December 2018. Positive matrix factorization(PMF) model was used for source appointment analysis, and the main emission sources were accurately traced with the conditional bivariate probability function(CBPF). The results show that the average volume fraction of VOCs in the park is(381.92±183.62)×10^(-9). The dominant component is halogenated hydrocarbon, and the dominant species are dichloromethane, toluene, and 1,2-dichloromethane etc., which reflects high VOCs pollution characteristics of the fine chemical industrial park. PMF analysis shows that the fine chemical emission sources accounts for 59.18% of the total VOCs, and the road mobile sources account for 27.48%. These two emission sources need to be focused on when planning control measures. CBPF analysis shows that many heavy polluting sources are in the southeast and northeast of the park, and sensitive areas around the park are easily affected by high-concentration VOCs emissions.

关 键 词：精细化工园区 挥发性有机物 正定矩阵因子分解(PMF)模型 条件双变量概率函数(CBPF) 源解析 

分 类 号：X511[环境科学与工程—环境工程]