摘要
为了解超低排放改造后工业源烟气颗粒物排放状况及其组分特征,于2020年1—5月对2家垃圾焚烧企业和2家燃煤电厂外排烟气开展了调查,同步采集外排烟气中的可过滤颗粒物(FPM)和可凝结颗粒物(CPM),测定质量浓度及其离子组分、元素组分,对各组分浓度范围及平均值进行统计评价。结果表明:4家企业外排烟气中CPM和FPM质量浓度平均值的比值分别为30.5,10.3,3.0,0.94,CPM的排放不可忽视;离子分析结果发现,烟气处理过程中产生的铵离子和硫酸根离子等水溶性离子,在FPM中基本未检出,在CPM中检出且浓度较高;金属元素分析结果发现,检出的铬(Cr)、镍(Ni)、铅(Pb)3种元素主要存在于FPM中,而砷(As)、汞(Hg)元素则更多地存在于CPM中;CPM中水溶性离子为主要成分,以水溶性离子作为CPM排放的控制因子是可行的。
To understand the emission status and component characteristics of flue gas particles from industrial sources after ultra-low emission transformation,from January to May 2020,two waste incineration enterprises and two coal-fired power plants were selected to investigate the exhaust gas,filterable particulate matter(FPM)and condensable particulate matter(CPM)were collected simultaneously,the mass concentration and the components of ions and element were determinded.Statistical evaluation of concentration range and average value of each component was obtained.The results showed that the average ratios of CPM to FPM mass concentration in the flue gas discharged from four enterprises were 30.5,10.3,3.0 and 0.94 respectively,and the CPM emission can not be ignored.Ion analysis showed that the water-soluble ions such as ammonium ion and sulfate ion produced in the flue gas treatment process were not detected in FPM,but in CPM,the concentrations of ammonium ion and sulfate ion are higher.Element analysis showed that,chromium(Cr),nickel(Ni)and lead(Pb)were mainly present in FPM,while arsenic(As)and mercury(Hg)were mostly present in CPM.Water-soluble ions are the dominant components of CPM,so it is feasible to set water-soluble ions as controlling factors of exhaust emission.
作者
谭金峰
TAN Jin-feng(Shandong Weifang Eco-environment Monitoring Center, Weifang, Shandong 261041,China)
出处
《环境监控与预警》
2022年第3期76-81,共6页
Environmental Monitoring and Forewarning
关键词
超低排放
燃煤电厂
垃圾焚烧发电厂
可过滤颗粒物
可凝结颗粒物
Ultra low emission
Coal-fired power plant
Waste incineration power plant
Filterable particulate matter
Condensable particulate matter
