石河子燃煤电厂重金属排放研究

选取石河子市典型燃煤电厂,对其燃煤烟气重金属排放浓度及飞灰、底渣、脱硫石膏重金属的富集进行定量分析。结果表明,烟气中各重金属排放浓度从高到低依次为Zn、Ni、Cr、Pb、Cu、Hg、Co、Cd、As。各重金属元素在飞灰中的富集程度较高,除Hg、Cd、Ni外,其他重金属元素在飞灰的富集因均值均大于5。其中,As在飞灰的富集因子均值为5.76。研究结果可为石河子重金属污染控制提供基础数据。

Emissions of Heavy Metals for Coal-Burning Power Plant in the Shihezi

The typical coal-burning power plant in Shihezi city was selected for the study of heavy metal emission. The emission concentration of heavy metals in coal and the distribution of heavy metal in the fly ash, the bottom slag and the desulfurized gypsum were assessed quantitatively. The results showed as follows, The order of the emission concentration of heavy metals from high to low was Zn, Ni, Cr, Pb, Cu, Hg, Co, Cd, As. The enrichment of the tested heavy metals was high in fly ash. The enrichment factors of the heavy metals in fly ash were more than 5 except Hg, Cd and Ni. In particular, the enrichment factor of As in fly ash was 5.76. The findings obtained in this study provided basic scientific data for the pollution control of heavy metals in Shihezi.