The Effect of Anions on Mercury Re-emission from Wet Flue Gas Desulfurization Liquors
Hg2+ captured by wet fine gas desulfurlzation (WFGD) systems can easily be reduced by reducing substances inch as S(IV) (SO32-or HSO32-) and results in elemental mercury (Hg*) emissions. So the mercury removal efficiency decreases because of Hg° reemission. The effects of anions on the characteristics of Hg2+ reduction and Hg0 reemission were studied by bubble reactor in this paper. The experimental results indicate that the Hg0 re-emission rate from WFGD liquors increases with decreasing die SO32-, Cr, F-, NO3- and SO42-concentration. So die Hg* re-emission from WFGD system can be reduced or slowed by increasing the some anions concentration, such as SO32+, Cl-, V, NO3- and SO42-. The investigations provide theoretical basis for industrial application of simultaneous mercury control in wet FGD systems.
Wet flue gas desulfurizotion Mercury removal Hg2+ reduction Reemission onions
Chuanmin Chen Jianhua Zhang
School of Environmental Science & Engineering, North China Electric Power University, Baoding, 071003, China
国际会议
深圳
英文
890-892
2011-03-28（万方平台首次上网日期，不代表论文的发表时间）