临汾市人为源一次PM_(2.5)排放特征及钢铁、焦化等重点行业管控对策  

Characteristics of PM_(2.5) emissions from anthropogenic sources in Linfen City and suggestions for controlling key industries such as steel and coking

作　　者：王璟煦 杜谨宏[2] 续鹏[2] 马京华[2] 营娜 薛志钢[2] WANG Jingxu;DU Jinhong;XU Peng;MA Jinghua;YING Na;XUE Zhigang(School of Earth Science and Engineering,Hebei University of Engineering,Handan 056038,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]河北工程大学地球科学与工程学院,邯郸056038 [2]中国环境科学研究院环境基准与风险评估国家重点实验室,北京100012

出　　处：《工程科学学报》2024年第7期1324-1335,共12页Chinese Journal of Engineering

基　　金：国家自然科学基金资助项目(42205062);河北省自然科学基金资助项目(D2023402002)。

摘　　要：基于现场调研、市直部门数据获取以及统计年鉴获取活动水平数据建立了2020年临汾市1 km×1 km人为源一次PM_(2.5)排放清单,研究该市一次PM_(2.5)排放结构、空间分布及不确定性.通过与卫星遥感数据、中国多尺度排放清单模型(MEIC)和中国高分辨率碳与大气污染物排放数据库(CHRED 3.0A)研究结果对比分析,阐述该排放清单的可靠性和全面性.结果表明,临汾市PM_(2.5)的人为源一次排放总量约为26375.7 t,其中,道路扬尘源、钢铁和焦化排放占比最大,分别为33.5%、16.1%和10.1%;各区县排放构成差异化明显,其中侯马市工艺过程源占比约90%,吉县化石燃料固定燃烧源占比约70%,蒲县生物质燃烧源占比约15%,大宁县扬尘源约93%,翼城县移动源约13%;临汾市钢铁和焦化行业共排放PM_(2.5) 6916.9 t,占总排放量的26.2%,曲沃县和襄汾县占比最大,分别为69.1%和20.81%,其中钢铁行业污染物排放主要来自烧结工艺,焦化行业主要来自焦炉烟囱;临汾市PM_(2.5)排放集中在临汾盆地内7个区县,且排放强度要远高于两侧山区地形的区县,西部区县的排放强度低于临汾东部区县,其中曲沃县、侯马市及襄汾县一次PM_(2.5)排放量位居前3;各类排放源不确定性结果处于-27.1%~34.5%之间.排放总量上,本文PM_(2.5)排放量与MEIC和CHRED 3.0A差别不大(MEIC:30905 t;CHRED 3.0A:19604.3 t;本研究:26375.7 t);空间分布上,与遥感反演浓度具有较高一致性,高值均集中于临汾盆地.作为临汾一次PM_(2.5)排放的重要来源,钢铁、焦化行业应进一步加强有组织和无组织排放监控,从源头和末端对污染物的排放进行精细化管控.This work explored the emission structure,spatial distribution,and uncertainty of the primary PM_(2.5) emission inventory of 1 km×1 km anthropogenic sources in Linfen City in 2020 by field research,data acquisition from the municipal departments,and obtaining of activity level data from the statistical yearbook.The reliability and comprehensiveness of the emission inventory were elaborated by comparison and analysis of the results with satellite remote sensing data,China Multiscale Emission Inventory Model(MEIC),and China High-Resolution Carbon and Air Pollutant Emission Database(CHRED 3.0A).The findings reveal that the total primary emissions of anthropogenic sources of PM_(2.5) in Linfen City are about 26375.7 t,of which road dust sources and iron and steel sources have the largest proportion,33.5%and 16.1%,respectively.The emission composition of the districts and counties is significantly differentiated,among which approximately 90%come from Houma City process sources,approximately 70%from Jixian County fossil fuel stationary combustion sources,approximately 15%from Pu County biomass combustion sources,approximately 93%from Daining County dust sources,and approximately 13%from Yicheng County mobile sources.The iron,steel,and coking industries in Linfen City emit a total of 6916.9 t of PM_(2.5),with the largest shares for Quwo County(69.1%)and Xiangfen County(20.81%),where the main sources of pollution in the iron and steel industry come from the sintering and converter processes and those in the coking industry mainly come from the stacks of the coke ovens.The PM_(2.5) emissions in Linfen City are concentrated in seven districts and counties in the Linfen Basin,and the emission intensity is much higher than the districts and counties with mountainous terrain on both sides,and that in the western districts and counties is lower than that in the eastern districts and counties of Linfen,among which the top 3 by PM_(2.5) emissions are Quwo County,Houma City,and Xiangfen County;the uncertainty results of differen

关 键 词：PM_(2.5) 排放特征 钢铁 焦化 管控对策 

分 类 号：X51[环境科学与工程—环境工程]