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硫酸盐的去除是煤矿矿井排水再利用的难点,设计中空纤维膜生物反应器,以无泡曝气方式供H2,在生物法脱硫过程中提供电子供体。膜组件为束状末端封闭式。采用不同的缓冲系统,研究无泡供氢自养脱硫的长期连续运行处理效果,最大硫酸盐(以SO42-计)还原速率为1.32g/(L.d),是同类研究反应器最大处理能力的1.5~2.3倍。在较高盐度条件下,硫酸盐还原菌在偏碱性的环境中活性更强,最适pH值与盐度水平有关。维持体系弱碱性环境有利于控制游离态H2S的浓度,是减轻H2S抑制效应的有效方法。
Sulfate removal is the difficulty of mine drainage reuse. The hollow fiber membrane bioreactor is designed to provide H2 without bubbling aeration and provide electron donor during biological desulfurization. Membrane components are bundled end-closed. Different buffering systems were used to study the effect of long-term continuous operation of self-sustaining desulfurization without foamed-in-hydrogen. The maximum sulfate (SO42-) reduction rate was 1.32g / (Ld), which was 1.5 times the maximum processing capacity of similar research reactors ~ 2.3 times. At higher salinity, sulfate-reducing bacteria were more active in the more alkaline environment, and the optimum pH was related to the salinity level. Maintaining a weakly alkaline environment of the system is conducive to controlling the concentration of free H2S and is an effective method for reducing the inhibitory effect of H2S.