在生物脱硫模拟装置上进行SO₂脱除实验，结果显示温度对系统脱硫效率影响明显，30℃左右出现最大值；随着进气浓度的增大即进气负荷的增大，生物脱硫系统的脱除负荷逐渐增大，脱硫效率不断下降；随着气液比的增大，吸收效率下降，最佳气液比为30：1；脱硫效率和硫酸盐产率都随着曝气量的增大而增大，硫产率随曝气量的增加先增大后减小；控制氧化还原电位（ORP）值可以有效地提高单质硫产率，ORP控制在-300~-200 mV之间时单质硫生成率在91.5%以上。

SO₂ removal experiment is conducted on a biological desulfurization simulation device.The results show that temperature has a significant effect on the system's desulfurization efficiency,with a maximum efficiency appearing at around 30℃.As the concentration of inlet gas increases,the desulfurization load of the biological desulfurization system increases gradually,and the desulfurization efficiency is decreasing continuously.As the ratio of gas-liquid increases,the absorption efficiency drops,and the optimal gas-liquid ratio is 30:1.Desulfurization efficiency and sulfate yield both increase with the increasing aeration,and sulfur yield increases first and decreases then with the increase of aeration.Controlling ORP value can improve effectively the yield of elemental sulfur.The generation rate of elemental sulfur can exceed 91.5% when ORP is controlled between -300 mV and -200 mV.

刘鑫鑫(1994-),男,硕士,研究方向为生物法烟气脱硫,lxxdlut@163.com