生活垃圾焚烧二噁英排放水平及特征研究

Study on the level and characteristics of dioxin emission from municipal solid waste incineration

研究了国内13家生活垃圾焚烧企业排放烟气和飞灰中二噁英排放浓度和同系物分布特征,结果表明:13家生活垃圾焚烧企业烟气中二噁英排放浓度为0.0015~0.27 ng TEQ/m^3,飞灰中二噁英浓度为0.022~3.8 ng TEQ/g。13家生活垃圾焚烧企业的烟气和飞灰中二噁英毒性当量分布特征较为相似,主要贡献单体为2, 3, 4, 7, 8-PeCDF和2, 3, 7, 8-TCDF。

The characteristics of dioxin emissions and homologues in flue gas and fly ash from 13 domestic waste incineration companies in China were studied. The results show that the dioxin concentration in the smoke from 13 domestic waste incineration companies is 0.0015 ~ 0.27 ng TEQ/m^3,the dioxin concentration in fly ash is 0.022 ~ 3.8 ng TEQ/g. The distribution characteristics of dioxin toxic equivalents in flue gas and fly ash from 13 domestic waste incineration companies are similar. The main contributing monomers are 2,3,4,7,8-PeCDF and 2,3,7,8-TCDF.