协同处置废物水泥窑汞等非常规污染物分析与排放

Environmental Chemistry(2018)

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Abstract
近年来我国城市固体废物产生量逐年增加,水泥窑协同处置废物技术发展迅速.本研究选择1台规模为3200 t·d-1的协同处置固废水泥窑,对烟气中汞等非常规污染物排放浓度进行现场测试,研究汞等非常规污染物分析与排放.研究表明,协同处置废物水泥窑窑尾烟气出口Hg0占比79%,Hg2+占比21%左右,烟气中T1+Cd+Pb+As和Be+Cr+Sn+Sb+Cu+Co+Mn+Ni+V平均浓度为32.12 μg· m-3和10.54 μg· m-3均低于我国协同处置固体废物水泥窑窑尾允许排放限值1.0 mg· m-3和0.5 mg·m-3,窑尾烟气中HF平均0.21 mg·m-3,HCl平均4.49 mg·m-3,PM2.5窑尾和窑头袋式除尘后出口烟气浓度,窑尾排放浓度较窑头高.
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