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首页> 外文期刊>Journal of Solid Waste Technology and Management >ODOR CHARACTERIZATION FROM LANDFILL COVER MATERIAL
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ODOR CHARACTERIZATION FROM LANDFILL COVER MATERIAL

机译：垃圾填埋材料的气味特征

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摘要

A landfill cover material, which was composed of fly ash and dewatered-digested sewage sludge, was suspected of being a significant odor source. To investigate, cover material and its components—fly ash, sewage sludge and lime, taken from their sources—were incubated for 4 weeks under controlled conditions. Odorous compounds were then quantified by gas chroma-tography-mass spectrometry. DMDS was found to be a major odor emitted from actual cover material used in the landfill area. Contrary to expectations, fly ash addition to the sewage sludge at a 3:1 proportion did not increase its pH to levels sufficient to inhibit biological activity. Lime additions to this same mix raised its pH to 11 temporarily. Cover material preparations with different proportions of fly ash/biosolids showed that sufficient additions of fly ash did mitigate odor generation.
机译：怀疑由粉煤灰和脱水消化的污水污泥组成的垃圾掩埋材料是重要的臭味源。为了进行调查，将覆盖物及其成分（粉煤灰，污水污泥和石灰，取自其来源）在受控条件下孵育4周。然后通过气相色谱-质谱法对气味化合物进行定量。发现DMDS是填埋场使用的实际覆盖材料散发出的主要气味。与预期相反，粉煤灰以3：1的比例添加到污水污泥中并没有将其pH值提高到足以抑制生物活性的水平。向该混合物中加入石灰的pH值暂时升高到11。具有不同比例的粉煤灰/生物固体的覆盖材料制剂表明，粉煤灰的充分添加确实减轻了气味的产生。

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