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首页> 外文期刊>Journal of Chemical Technology & Biotechnology >Effect of inlet mass loading,water and totalbacteria count on methanol elimination using upward flow and downward flow biofilters
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Effect of inlet mass loading,water and totalbacteria count on methanol elimination using upward flow and downward flow biofilters

机译：入口质量负载，水和总细菌数对使用向上和向下流动生物滤池去除甲醇的影响

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摘要

An upward flow biofilter and a downward flow biofilter using compost for removing methanol from air were investigated to compare the biofilter performance and to realize the advantages of using downward flow biofilters for accessibility to water make-up. Both the upward flow and downward flow columns showed similar performance in terms of elimination capacity (EC) versus inlet mass loading (IC). The maximum elimination capacity (EC) from these two blofilters was approximately 101gm3h1 with an optimum methanol loading rate at inlet (IC) of 169gm~(-3)h~(-1) (7.5g m~(-3) ofmethanoI with superficial velocity of 7.6m h1). The effect of water movement within the bed on elimination capacity was monitored. In addition, it was found that when the water content in the compost was below 35% by weight, microbial activity was impaired. Once the compost media had dried, it became hydrophobic and could be rewetted only with great difficulty. Total bacteria count was performed on compost samples during the entire operation. The relationship between elimination capacity and total bacteria count was reported. Similar trends were shown by the variations of elimination capacity and total bacteria count with methanol loading: both initially increase, go through a plateau, then decrease with loading.
机译：对使用堆肥从空气中去除甲醇的向上流动生物滤池和向下流动生物滤池进行了研究，以比较该生物滤池的性能，并了解使用向下流动生物滤池获得补水的优势。就消除能力（EC）相对于入口质量负载（IC）而言，向上流动和向下流动的色谱柱均显示出相似的性能。这两个过滤器的最大消除容量（EC）约为101gm3h1，在入口（IC）处的最佳甲醇负载率为169gm〜（-3）h〜（-1）（7.5gm〜（-3）的甲烷，表观速度7.6m h1）。监测了床内水移动对消除能力的影响。另外，发现当堆肥中的水含量低于35重量％时，微生物活性受到损害。堆肥培养基一旦干燥，就会变成疏水性，只能非常困难地重新润湿。在整个操作过程中，对堆肥样品进行了总细菌计数。报道了消除能力和总细菌数之间的关系。消除能力和总细菌数随甲醇负荷的变化而显示出类似的趋势：二者最初都增加，经过一个平稳期，然后随负荷而减少。

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