黄土覆盖对西北地区填埋场恶臭释放的影响——现场监测与分析

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摘要为探明西北黄土区生活垃圾填埋场恶臭释放状况和黄土覆盖的控制效果,选择该地区填埋场中4种代表不同时期和不同覆盖状态的释放面源,现场测定表面恶臭释放速率,均值结果为未覆盖新形成垃圾填埋面5915μg/(m²·h)、新形成黄土覆盖面122μg/(m²·h)、覆盖黄土5个月后土表面757μg/(m²·h)、重新暴露垃圾面14057μg/(m²·h).结果表明,黄土覆盖层对恶臭气体削减率在不同时期均超过94%,并对各类恶臭化合物起到了显著的控制效果.覆盖5个月后的黄土微生物群落结构分析表明放线菌门的相对丰度最高,参与到挥发性有机化合物的降解过程,且在表面的作用更强.实验结果与分析证明了黄土覆盖对恶臭释放控制的有效性.因此,因地制宜利用黄土作为西北地区填埋场的覆盖层具有应用可行性.

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	徐翔宇
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	章骅
	何品晶

关键词 ：黄土层覆盖, 填埋气体, 表面恶臭释放速率

Abstract：The present study was aimed to quantitatively estimate the odor emission of municipal solid waste landfills in the loess area of Northwest China and investigate the technical feasibility of using loess soil as covering material for odor pollution control. For this purpose, the study was conducted in field and chose four types of landfill surface sources representing different periods and different coverage states in this region. The surface odor release rates were determined as follows: 5915μg/(m²·h) for newly formed landfill surface without cover, 122μg/(m²·h) for newly formed landfill surface with loess cover 757μg/(m²·h) for loess-covered surface after 5months, and 14057μg/(m²·h) for re-exposed landfill surface. The results indicated that the loess cover reduced odor emissions by more than 94% at two periods and effectively controlled various odor compounds. The analysis on the loess microbial community structure after 5 months of coverage showed that Actinobacteria had the highest relative abundance, potentially participated in the degradation of volatile organic compounds, and had a stronger effect on the surface. The experimental results demonstrated the effectiveness of loess cover in controlling odor emissions, proving that the application of loess as a landfill cover layer is feasible in the northwest region.

Key words： loess cover landfill gas surface odor emission rate

收稿日期: 2024-07-30

PACS:

X705

基金资助:国家重点研发计划项目(2018YFC1903700)

通讯作者: 何品晶,教授,solidwaste@tongji.edu.cn E-mail: solidwaste@tongji.edu.cn

作者简介: 徐翔宇(1998-),男,安徽蚌埠人,同济大学硕士研究生,主要研究方向为固体废物处理与资源化利用.发表论文5篇.mocai@tongji.edu.cn.

引用本文:

徐翔宇, 邵立明, 王玉婧, 吕凡, 章骅, 何品晶. 黄土覆盖对西北地区填埋场恶臭释放的影响——现场监测与分析[J]. 中国环境科学, 2025, 45(2): 882-891. XU Xiang-yu, SHAO Li-ming, WANG Yu-jing, LYU Fan, ZHANG Hua, HE Pin-jing. The influence of loess cover on odor release from landfills in the northwest region of China——On site monitoring and analysis. CHINA ENVIRONMENTAL SCIENCECE, 2025, 45(2): 882-891.

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