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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 m L/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。
In order to understand the degradation effect of low concentration methane in the wind flow, an aerobic methane-consuming microorganism with methane as the sole carbon source was cultivated and an experimental system was designed to simulate the low concentration of methane degradation in the wind flow to regulate the concentration of methane, the wind speed And the concentration of bacteria. The experimental results showed that under the premise of constant spraying rate of methane oxidation bacteria liquid, the higher concentration of spraying bacteria liquid is more conducive to the degradation of methane. Under the same methane concentration in the wind flow, under the same wind speed (300 ~ 500 m L / min), the greater the wind speed is, the less it is detrimental to the degradation of methane and the longer the effective degradation time. With the same wind speed and methane concentration, it is found that the methane concentration in the wind flow (10% ~ 30%) Within, the higher the concentration of methane, the more obvious the effect of oxidation.