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作为氨源的连续液灌增强了垃圾填埋场生物覆盖土壤中的甲氧化

Ruo He¹, Rui Zhou¹, Lei Qian¹

¹School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China.

Journal of environmental management

|February 21, 2026

概括

连续水灌有效地恢复了垃圾填埋地覆盖土壤中的甲氧化,通过提供氨,促进微生物活动和消耗甲的细菌. 与批量应用相比,这种方法显著增加了甲消耗.

科学领域:

环境微生物学环境微生物学
地质化学地质化学
废物管理废物管理

背景情况:

垃圾填埋场覆盖的土壤在初始峰值后可能会经历甲 (CH4) 氧化活性下降的情况.
改是一种恢复这一关键的CH4氧化功能的策略.

研究的目的:

评估使用液作为氨源来恢复垃圾填埋生物覆盖土壤中CH4氧化物的可行性.
为了比较连续液应用与批次应用和直接添加氨的有效性.

主要方法:

在垃圾填埋场的生物覆盖土壤中,分批和连续地应用液和氨 (NH₄⁺-N).
测量CH₄氧化速率和累计的CH₄消耗.
分析微生物群落的组成和数量,特别是甲氧化细菌 (MOB).
统计建模 (部分最小平方路径建模) 来确定影响因素.

主要成果:

连续添加液导致累积CH₄消耗显著增加 (1.17-2.61倍高) 比批处理.
连续应用氨和液都比批处理更有效地促进了微生物生长.
在连续治疗中,II型MOB的丰度明显高 (10.0-29.2倍),表明增强了N2固定活性.
连续的液和氨添加增强了CH4氧化,主要是通过增加总体微生物和MOB种群.

结论:

连续,小规模的液灌是一种可行的策略,可以恢复垃圾填埋场覆盖土壤中的甲氧化.
液作为有效的氨源,促进微生物生长和增加消耗甲的细菌.
这种方法为运行覆盖系统提供了一种实际的方法,以减轻垃圾填埋场CH4排放.

关键词:

氨的添加氨的添加甲的氧化速度是多少甲氧化细菌是甲氧化的细菌.微生物社区的微生物社区.微生物转换的转换

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