荆州开发区高分辨率大气源排放清单构建研究

Setting-up of High-resolution Emission Inventory of Air Pollution Sources in Jingzhou Economic and Technological Development Zone

为准确掌握荆州开发区大气污染物排放状况,该研究采用排放因子法,基于资料收集与实地调查结合的方式获取活动水平、文献调研选取排放系数,结合ArcGIS平台,建立了荆州开发区2019年1 km×1 km 10类排放源9种大气污染物排放清单。结果表明:开发区SO_(2)、NO_(x)、CO、VOCs、NH_(3)、PM_(10)、PM_(2.5)、BC和OC的排放量分别为850.4、2407.1、4584.0、4848.3、107.7、8602.1、4485.3、57.8和159.6 t。移动源是NO_(x)的主要来源,占NO_(x)总排放量的43.8%。固定燃烧源是CO的主要来源,占CO总排放量的81.5%。工艺过程源是SO_(2)、VOCs、PM_(10)、PM_(2.5)和OC的主要来源,分别占SO_(2)、VOCs、PM_(10)、PM_(2.5)和OC总排放量的50.9%、69.0%、85.6%、85.5%和83.8%。农业源是NH_(3)的主要来源之一,占NH_(3)总排放量的32.8%。扬尘源对PM_(10)、PM_(2.5)的排放贡献仅分别为11.5%和10.1%。

In order to have a good command of the situation of air pollution in Jingzhou Economic/Technological Development Zone,the activity levels were acquired by means of data collection and field surveys,and the emission factors were selected through literature retrieval.Thereby the 1 km×1 km-gridded emission inventory of nine air pollutants from 10 kinds of sources in the Development Zone in 2019 were set up basing on the ArcGIS technology.As a result,the findings of the study showed that the total emission of SO_(2),NO_(x),CO,VOCs,NH_(3),PM_(10),PM_(2.5),BC,and OC in the Development Zone was 850.4,2407.1,4584.0,4848.3,107.7,8602.1,4485.3,57.8,and 159.6 tons,respectively;and the vehicle sources(43.8%)were the major contributors to NO_(x)emissions,while the stationary combustion sources were the main CO discharge source,accounting for 81.5%of the total CO emissions.In addition,the technological process sources were the major contributor of SO_(2),VOCs,PM_(10),PM_(2.5)and OC,accounting for 50.9%,69.0%,85.6%,85.5%,and 83.8%respectively,and agricultural sources were one of the important sources of NH_(3)(32.8%of the total).On the other hand,dust sources merely accounted for 11.5%of PM_(10)and 10.1%of PM_(2.5)emissions.