摘要
秸秆露天焚烧一直是影响广西冬季环境空气质量的主要因素,秸秆露天焚烧具有地方特色,是大气污染防治工作中的重中之重。基于大气污染源排放清单编制,采用排放因子法测算了广西秸秆露天焚烧源排放清单,利用环境空气质量数据和火点监控数据,分析了秸秆露天焚烧污染物的时空分布特征。结果表明,广西2019年秸秆露天焚烧排放污染物量为CO 80.7万t、可吸入颗粒物(PM_(10))14.8万t、细颗粒物(PM_(2.5))14.5万t、挥发性有机物(VOCs)15.9万t、SO_(2)1.1万t、NO_(x) 5.1万t、黑碳(BC)1.9万t、有机碳(OC)8.3万t和NH_(3)1.0万t,其中甘蔗秸秆焚烧污染物排放贡献占比为82.1%~87.8%,是广西主要的大气污染源。每年11月至次年2月是广西甘蔗秸秆焚烧主要时段,该季节气象条件利于焚烧且不易扩散,对环境空气质量影响较大。来宾市22:00和崇左市9:00左右秸秆露天焚烧特征明显。
Open field straw burning has always been the main factor affecting the air quality in winter in Guangxi.With local characteristics,it is the top priority in air pollution prevention and control.Based on the compilation of the emission inventory of air pollution sources,the emission factor method was used to calculate the emission inventory of straw open field burning in Guangxi.The spatio-temporal distribution characteristics of pollutants from straw open field burning were analyzed by using the ambient air quality data and fire monitoring data.The results showed that the total emissions of CO,PM_(10),PM_(2.5),VOCs,SO_(2),NO_(x),BC,OC and NH_(3) were 8.07×10^(5),1.48×10^(5),1.45×10^(5),1.59×10^(5),1.1×10^(4),5.1×10^(4),1.9×10^(4),8.3×10^(4) and 1.0×10^(4) t.Among them,open field sugarcane straw burning was the main air pollution source in Guangxi,accounting for 82.1%to 87.8%of pollutant emission.The main period of sugarcane straw burning in Guangxi was from November to February of next year.The meteorological conditions in this season were conducive to incineration and not easy to diffuse,which had a great impact on the environmental air quality.The open field straw burning around 22:00 in Laibin and 9:00 in Chongzuo was obvious.
作者
刘慧琳
莫招育
覃纹
穆奕君
黄炯丽
陈志明
杨俊超
李宏姣
张达标
吴影
段炼
LIU Huilin;MO Zhaoyu;QIN Wen;MU Yijun;HUANG Jiongli;CHEN Zhiming;YANG Junchao;LI Hongjiao;ZHANG Dabiao;WU Ying;DUAN Lian(Scientific Research Academy of Guangxi Environmental Protection,Nanning Guangxi 530022;The Collaborative Innovation Center of the Ecological Environment&Integration Development in the Xijiang River Basin,Nanning Guangxi 530022;Department of Environmental Science and Engineering,Fudan University,Shanghai 200433;School of Natural Resources and Surveying,Nanning Normal University,Nanning Guangxi 530001;Center of Health Geography Education and Information,Nanning Normal University,Nanning Guangxi 530001)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2022年第5期631-638,共8页
Environmental Pollution & Control
基金
广西重点研发计划项目(桂科AB20238014)
广西自然科学基金资助项目(No.2019GXNSFBAA185061)
广西大气污染来源解析及预报预警工程技术研究中心项目。
关键词
甘蔗秸秆
露天焚烧
排放清单
时空分布
sugarcane straw
open field burning
emission inventory
spatio-temporal distribution
