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首页> 外文期刊>Waste management & research >A laboratory-scale comparison of compost and sand-compost-perlite as methane-oxidizing biofilter media
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A laboratory-scale comparison of compost and sand-compost-perlite as methane-oxidizing biofilter media

机译：堆肥和砂堆珍珠岩作为甲烷氧化生物滤料的实验室规模比较

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摘要

Municipal solid waste landfills produce methane, a potent greenhouse gas. A treatment approach is to passively vent landfill gas through a methane-oxidizing biofilter medium, a porous substrate that facilitates the growth of methanotrophic bacteria. Two substrates, compost and a sand-compost-perlite (SCP) mixture, were evaluated in a laboratory-scale experiment for their suitability as biofilter media. The SCP mixture was investigated to minimize settlement and was based on a particle size distribution specification used for turf grass. The long-term (218 days) methane removal rates showed that both compost and SCP were capable of removing 100% of the methane influent flux (134 g CH_4 m~(-2) day~(-1)). The post-experiment analysis showed that compost had compacted more than SCP. This did not affect the results; however, in a field installation, traffic on the biofilter surface (e.g. maintenance) could cause further compaction and negatively affect performance. Exopolymeric substance produced by the methanotrophic bacteria, attributed by others for declining removal rates due to bio-clogging, was not observed to affect the results. The maximum exopolymeric substance values measured were 23.9 and 7.8 mg D-glucose g~(-1) (dry basis) for compost and SCP, respectively.
机译：市政固体垃圾填埋场产生甲烷（一种有力的温室气体）。一种处理方法是通过甲烷氧化生物过滤器介质被动排放垃圾填埋气，甲烷氧化生物过滤器介质是促进甲烷营养细菌生长的多孔基质。在实验室规模的实验中评估了两种堆肥，即堆肥和堆砂-珍珠岩（SCP）混合物作为生物滤料的适用性。对SCP混合物进行了研究以最大程度地减少沉降，并且基于用于草皮草的粒度分布规范。长期（218天）的甲烷去除率表明，堆肥和SCP都能够去除100％的甲烷流入流量（134 g CH_4 m〜（-2）天〜（-1））。实验后的分析表明，堆肥的密实度超过了SCP。这并没有影响结果。但是，在现场安装中，生物滤池表面的流量（例如维护）可能会导致进一步的压实，并对性能产生负面影响。没有观察到甲烷营养细菌产生的聚合物外物质，这是其他人归因于生物堵塞而导致去除速率下降的结果，它不会影响结果。堆肥和SCP测得的最大外聚合物含量分别为23.9和7.8 mg D-葡萄糖g〜（-1）（干基）。

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  • 来源
    《Waste management & research》 |2009年第2期|138-146|共9页
  • 作者

    Andrew Philopoulos; Juliane Ruck; Daryl McCartney; Christian Felske;

  • 作者单位

    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada;

    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada;

    Department of Civil and Environmental Engineering, University of Alberta, 3-051 Markin/CNRL Natural Resources Engineering Facility, Edmonton, Alberta, Canada T6G 2W2;

    Environmental Technologies, Alberta Research Council, Edmonton, Alberta, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biofilter; landfill cover; landfill gas; methane oxidation; methanotrophs; wmr 1168-2;

    机译：生物滤池垃圾掩埋场;垃圾填埋气;甲烷氧化甲烷营养菌;WMR 1168-2;

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