风流中低浓度甲烷微生物降解效能实验

    Degradation Capability Experiment of Low Concentration Methane by Microorganism in Air Flow

    • 摘要: 为了解风流中低浓度甲烷的降解效果,培养了以甲烷为唯一碳源的好氧型耗甲烷微生物,并自主设计了模拟风流中低浓度甲烷降解实验系统,达到了调节风流中甲烷浓度、风速及菌液浓度的目的。通过实验发现,在保持恒定甲烷氧化菌液喷洒速度的前提下,喷洒菌液浓度越高,越有利于甲烷的降解;在保持风流中甲烷浓度相同的条件下,在风速(300~500 mL/min)范围内,风速越大越不利于甲烷的降解,并且有效降解持续时间也随之下降;在保持相同风速、甲烷浓度的前提下,发现在风流中甲烷浓度(10%~30%)范围内,甲烷浓度越高氧化效果越明显。

       

      Abstract: In order to understand the degradation effect of low concentration methane in air flow by microorganism, aerobic methane consumption microorganism that takes methane as the sole carbon source in the process of cultivation was cultured; we designed a low concentration methane degradation simulation experiment system in the air flow independently to reach the target of regulate methane concentration in the air flow, the wind speed and concentration of bacteria. The experiments show that in the condition of keeping constant methane oxidizing bacteria liquid spraying speed, the higher the concentration of the bacteria, the more conducive to the degradation of methane; under the condition of keeping same methane concentration in the air flow, in the range of wind speed (300 mL/min to 500 mL/min), the higher the wind speed, the worse the degradation effect, and the effective degradation duration was also decreased; under the condition of same wind speed, methane concentration, in the range of methane concentration (10% to 30%) in the air flow, the higher the methane concentration, the better effect of the methane degradation.

       

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