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首页> 外文期刊>Archives of Applied Science Research >Effects of mixed ratio, moisture content, nutrient addition and cover thickness on methane oxidation in landfill bio-cover
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Effects of mixed ratio, moisture content, nutrient addition and cover thickness on methane oxidation in landfill bio-cover

机译：混合率，水分含量，营养加入和覆盖厚度对填埋生物覆盖中甲烷氧化的影响

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Landfill bio-cover plays a significant role in methane reducing. It inhabits methane-oxidizing bacteria which reduce methane emissions to the atmosphere and supply carbon dioxide for photosynthesis. Full factorial 34 experimental design using simulation columns was conducted to investigate statistically the effects of mixed ratio, moisture content, nutrient addition and cover thickness on the CH4 oxidation efficiency through a landfill bio-cover sewage sludge modified by coal ash. The results from all experiment sets showed that all factors definitely influence methane oxidation ability. The CH4 oxidation efficiencies were different under different experimental and operating conditions. Synthesize the maximum CH4 oxidation efficiency and V(CH4), the optimal conditions was 1:1 mixed ratio of coal ash and sewage sludge, added 0.05 mL/g NMS nutrients to 400 mm thickness in landfill bio-cover which made moisture content of material reached 40%. The maximum CH4 oxidation efficiency and V(CH4) were 88.6% and 0.75 mmol/(kg•d) under the optimal conditions. Additionally, the decrease in the CH4 concentration and the increase in CO2 concentration in the headspace gas were clear indication that there was CH4 oxidation process.
机译：垃圾填埋场生物封面在甲烷减少中发挥着重要作用。它居住在甲烷氧化细菌中，将甲烷排放降低到大气中，供应二氧化碳进行光合作用。通过煤灰填埋场生物覆盖污水污泥进行了全部采用仿真柱进行统计数据，以统计研究混合比，水分含量，养分，加入和覆盖厚度对CH4氧化效率的疗效。所有实验组的结果表明，所有因素肯定会影响甲烷氧化能力。在不同的实验和操作条件下，CH 4氧化效率不同。合成最大CH4氧化效率和V（CH4），最佳条件为1：1粉煤灰和污水污泥的混合比，加入0.05ml / g nms营养物至400毫米厚度在垃圾填埋场生物覆盖物中的含水量达到40％。在最佳条件下，最大CH4氧化效率和V（CH 4）为88.6％和0.75mmol /（kg•d）。另外，CH 4浓度的降低和顶空气体中的CO 2浓度的增加清楚地表明存在CH 4氧化过程。

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