摘要
为分析钢铁烧结机排放二噁英沉降对土壤污染的影响,根据2016年河北某钢铁厂烧结机头二噁英排放监测数据、土壤监测数据等,建立了基于CALPUFF数值模型的钢铁烧结机排放二噁英类污染物沉降土壤的计算方法.结果显示,该企业烧结机二噁英毒性当量为0.017~0.025ng-TEQ/Nm^3,排放因子为0.044~0.081μg-TEQ/t,3个土壤监测点二噁英浓度结果为0.82~2.4ng/kg,采用CALPUFF模式模拟烧结机二噁英对土壤监测点沉降量结果为1.46~3.44ng/kg,模拟结果与周边土壤监测点实测趋势一致.
In order to investigate the influence of dioxins emitted from iron-steel sintering machines on soil pollution, both monitored data by a steel plant in Hebei Province in 2016 and CALPUFF simulations are used to design a method to estimate the amount of sintering-emitted dioxins that is deposited in the surrounding soil. Results show that the toxicity equivalency quantity(TEQ) of dioxin in exhaust gas from the sintering machines of this steel plant is 0.017~0.025 ng-TEQ/Nm^3. The emission factor is 0.044~0.081 ug-TEQ/t. The concentration of dioxins in three soil samples ranges from 0.82 to 2.4 ng/kg, which is consistent with the simulated results by CALPUFF(1.46~3.44 ng/kg).
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2017年第11期4222-4229,共8页
China Environmental Science
基金
国家重点实验室开放基金课题(16K01ESPCT)
环境保护部基金课题(1441402450017-2)
