Unpleasant odors emitted from landfills have been caused environmental and societal problems. For odor abatement, two pilot-scale biocovers were installed at a sanitary landfill site in South Korea. Biocovers PBC1 and PBC2 comprised a soil mixture with different ratios of earthworm casts as an inoculum source and were operated for 240 days. Their odor removal efficiencies were evaluated, and their bacterial community structures were characterized using pyrosequencing. In addition, the correlation between odor removability and bacterial community dynamics was assessed using network analysis. The removal efficiency of complex odor intensity in the two biocovers ranged from 81.1% to 97.8%. Removal efficiencies of sulfur-containing odors (hydrogen sulfide, methanethiol, dimethyl sulfide, and dimethyl disulfide), which contributed most to complex odor intensity, were greater than 91% in both biocovers. Despite the fluctuations in ambient temperature (−8.2 to 31.3 °C) and inlet complex odor intensity (10,000–42,748 of odor dilution ratio), biocovers PBC1 and PBC2 displayed stable deodorizing performance. A high ratio of earthworm casts as an inoculum source led to high odor removability during the first 25 days of operation, but different mixing ratios of earthworm casts did not significantly affect overall odor removability. A bacterial community analysis showed that Methylobacter, Arthrobacter, Acinetobacter, Rhodanobacter, and Pedobacter were the dominant genera in both biocovers. Network analysis results indicated that Steroidobacter, Cystobacter, Methylosarcina, Solirubrobacter, and Pseudoxanthomonas increased in relative abundance with time and were major contributors to odor removal, although these bacteria had a relatively low abundance compared to the overall bacterial community. These data contribute to a more comprehensive understanding of the relationship between bacterial community dynamics and deodorizing performance in biocovers.

垃圾填埋场散发出的令人不愉快的气味已引起环境和社会问题。为了减少气味，在韩国的一个卫生垃圾填埋场安装了两个中试规模的生物覆盖物。Biocovers PBC1和PBC2包含一种土壤混合物，其中不同比例的cast粪便作为接种物来源，操作了240天。评估了它们的除臭效率，并使用焦磷酸测序对它们的细菌群落结构进行了表征。此外，使用网络分析评估了气味去除能力与细菌群落动态之间的相关性。在两个生物覆盖物中去除复杂气味强度的效率范围为81.1％至97.8％。去除含硫气味（硫化氢，甲硫醇，二甲基硫和二甲基二硫）的效率，在两个生物覆盖物中，对复杂气味强度影响最大的是大于91％。尽管环境温度（-8.2至31.3°C）和入口复合物的气味强度（10,000-42,748的气味稀释比）有所波动，但生物覆盖物PBC1和PBC2仍显示出稳定的除臭性能。在手术的前25天中，高比例的cast铸屑作为接种源可导致较高的气味去除能力，但是different混合物的不同混合比例不会显着影响总体气味去除能力。细菌群落分析表明 在手术的前25天中，较高比例的cast铸屑作为接种源可导致较高的气味去除能力，但是s混合物的不同混合比例不会显着影响总体气味去除能力。细菌群落分析表明 在手术的前25天中，高比例的cast铸屑作为接种源可导致较高的气味去除能力，但是different混合物的不同混合比例不会显着影响总体气味去除能力。细菌群落分析表明Methylobacter，节，不动杆菌，Rhodanobacter和Pedobacter分别在这两个biocovers优势属。网络分析结果表明，Steroidobacter，Cystobacter，Methylosarcina，Solirubrobacter和Pseudoxanthomonas在相对丰度随时间增加，并是主要贡献者去除异味，虽然这些细菌相比，整体细菌群落具有相对低丰度。这些数据有助于更全面地了解生物群落中细菌群落动态与除臭性能之间的关系。