【摘要】 用单一的生物反应器处理硫化氢时,微生物容易受到硫化氢的毒害作用而使细胞活力受损,废气处理效率迅速降低。为此,提出生物和化学二级反应器处理硫化氢的新工艺,并对微生物的生长、分布、最适工艺运行条件和影响因素等做了研究。结果表明,生物反应器中微生物对亚铁离子的氧化速率对硫化氢的去除效果有着重要的影响,二级反应器工艺大大提高了硫化氢去除效率,反应的主要产物为单质硫,同时便于对硫沉淀的分离,在操作温度31℃,pH值1.5—1.8,水力停留时间2.5 h,进气质量浓度8 g/m3,硫化氢承载负荷2 000 g/(m3.h)以下时,系统可以稳定运行,硫化氢的脱除率可达99%以上。更多还原

【Abstract】 When hydrogen sulphide gas was introduced into a single reactor the cells were damaged by the high concentration of H2S and the H2S removal rate was rapidly decreased.Therefore,a new bio-chemical double stage reactor technology was developed.This study investigated the development and distribution of microorganism,optimal operating conditions and main affected factors.The experimental results demonstrate that this new technology is an effective method for H2S removal and separation of deposit.The main product is S.Fe2+ oxidation has a great influence on H2S removal efficiency,which may reach 99% at the optimal operation conditions of 31 ℃,pH of 1.5-1.8,residence time of 2.5 h,inlet maximum mass concentration of 8 g/m3,and H2S loading rate less than 2 000 g/(m3·h).更多还原