H2S removal and bacterial structure along a full-scale biofilter bed packed with polyurethane foam in a landfill site.
H2S removal and bacterial structure along a full-scale biofilter bed packed with polyurethane foam in a landfill site.
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DOI：
10.1016/j.biortech.2013.07.143
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发表时间：
2013-11
影响因子：
11.4
通讯作者：
Lin Li;Yunping Han;Xu Yan;Jun-xin Liu
中科院分区：
文献类型：
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作者：
Lin Li;Yunping Han;Xu Yan;Jun-xin Liu
采用聚氨酯泡沫填料生物过滤器对填埋场覆盖膜下的硫化氢进行了为期7个月的处理。沿生物滤床沿着设置采样口，考察生物滤床对H2S的去除效果及微生物特性。该生物过滤塔对H2S有较好的去除效果，稳定运行时H2S的去除率可达90%以上。生物滤塔下部（LPB）和上部（UPB）对H2S的平均去除能力分别为2.21 g m−3h− 1和0.41 g m−3h− 1。H2S在LPB中被去除。H2S浓度沿着聚氨酯泡沫填料床变化，生物滤池内细菌群落结构呈现空间变异性，H2S去除效果及产物分布也随之发生变化。将气味剂引入生物过滤器中使现有微生物种群的分布向能够代谢目标气味的特定培养物转移。
Hydrogen sulfide accumulated under a cover film in a landfill site was treated for 7 months by a full-scale biofilter packed with polyurethane foam cubes. Sampling ports were set along the biofilter bed to investigate H2S removal and microbial characteristics in the biofilter. The H2S was removed effectively by the biofilter, and over 90% removal efficiency was achieved in steady state. Average elimination capacity of H2S was 2.21 g m−3h−1in lower part (LPB) and 0.41 g m−3h−1in upper part (UPB) of the biofilter. Most H2S was eliminated in LPB. H2S concentration varied along the polyurethane foam packed bed, the structure of the bacterial communities showed spatial variation in the biofilter, and H2S removal as well as products distribution changed accordingly. The introduction of odorants into the biofilter shifted the distribution of the existing microbial populations toward a specific culture that could metabolize the target odors.