摘要
为了探究典型行业周边土壤中二噁英浓度,针对钢铁冶炼、生活垃圾焚烧和危险废物焚烧等行业开展了周边土壤中二噁英浓度分布特性的研究。结果表明,典型行业周边土壤中二噁英毒性当量浓度为0.77~3.80ng TEQ/kg,平均为1.98ng TEQ/kg,其中钢铁冶炼企业周边土壤中二噁英的平均毒性当量浓度(2.50ng TEQ/kg)最高,其次是生活垃圾焚烧企业(2.01ng TEQ/kg),危险废物焚烧企业周边土壤中二噁英的平均毒性当量浓度最低(1.44ng TEQ/kg)。钢铁冶炼企业浅层土壤(0~200mm)中二噁英毒性当量浓度明显高于深层土壤(200~400mm),土壤中二噁英毒性当量浓度与空气中二噁英的沉降作用有关。钢铁冶炼企业土壤中二噁英分布与最大落地浓度点、污染源中二噁英分布均相近,而生活垃圾焚烧企业和危险废物焚烧企业土壤中二噁英分布与最大落地浓度点、污染源中二噁英分布差异较大。
In order to explore the typical industries dioxin emission in the surrounding soil,the characteristics of dioxin emission in the surrounding soils were studied in typical industries,such as steel smelting,municipal solid waste（MSW）incineration and hazardous waste incineration.The results showed that the TEQ concentration of dioxin in the surrounding soil was 0.77-3.80 ng TEQ/kg,and the average TEQ concentration was 1.98 ng TEQ/kg.The average TEQ concentration of 2.50 ng TEQ/kg in the surrounding soil from steel smelting incinerator was the highest,followed by the MSW incinerator（2.01 ng TEQ/kg）,and the average TEQ concentration of 1.44 ng TEQ/kg in the surrounding soil from the hazardous waste incinerator was the lowest.The TEQ concentrations of dioxin in the shallow soil（0-200 mm）from steel smelting incinerator were significantly higher than those in the deep soil（200-400 mm）,and the TEQ concentration of dioxin in soil was related to the sedimentation of dioxins in air.The distribution of dioxin in the surrounding soil from steel smelting incinerator was similar to that in the source and maximum landing point,but the MSW incinerator and the hazardous waste incinerator were just the opposite.
作者
黄晨
林晓青
李晓东
李文维
武广富
HUANG Chen;LIN Xiaoqing;LI Xiaodong;LI Wenwei;WU Guangfu(Shanghai Electric Power Co.,Ltd.,Shanghai 200010;College of Energy Egineering,Zhejiang University,Hangzhou Zhejiang 310027)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2018年第6期693-697,共5页
Environmental Pollution & Control
基金
国家重点研发计划项目(No.2017YFC0703100)
关键词
焚烧
土壤
二噁英
钢铁冶炼
生活垃圾
危险废物
incineration
soil
dioxin
steel smelting
municipal solid waste
hazardous waste
