摘要
为应对生活垃圾填埋场中NH_(4)^(+)-N和NO_(3)^(-)-N污染问题,探索切实可行的原位修复技术,选取某生活垃圾填埋场为研究对象,采用“原位化学耦合微生物注射井+可渗透反应墙”工程技术,开展地下水污染修复。针对高浓度NH_(4)^(+)-N污染区域,采用原位化学耦合微生物工程技术,有效靶向降低地下水中NH_(4)^(+)-N的高浓度污染。可渗透反应墙设置于污染区域的下游位置,实现地下水末端的深度修复。工程建成经过8个月的运行,处理后的水质符合GB/T 14848—2017《地下水质量标准》Ⅲ类水质要求。NH_(4)^(+)-N,NO_(3)^(-)-N的最高去除率分别达99.6%和97.2%,修复效果显著。
To address the contamination of NH_(4)^(+)-N and NO_(3)^(-)-N in municipal solid waste landfill sites and to explore practical in situ remediation technologies,a specific landfill was selected as the study site.An integrated engineering approach combining in situ chemical-microbial coupling injection wells with a permeable reactive barrier was implemented for groundwater pollution remediation.In areas exhibiting high concentrations of NH_(4)^(+)-N,the in-situ chemical-microbial coupling technology was employed to effectively target and reduce elevated NH_(4)^(+)-N levels in the groundwater.The permeable reactive barrier was installed downstream of the contaminated zone to achieve advanced treatment of groundwater at the terminal point.After eight months of operation,the treated groundwater met the Class Ⅲ water quality standards as specified in GB/T 14848—2017.The removal efficiencies for NH_(4)^(+)-N and NO_(3)^(-)-N reached maximum values of 99.6%and 97.2%,respectively,demonstrating a significant remediation effect.
作者
何兴详
HE Xing-xiang(Xuzhou Environmental Protection Group Ecological Engineering Co.,Ltd.,Xuzhou 221009,China)
出处
《环境科技》
2025年第6期32-36,共5页
Environmental Science and Technology
关键词
生活垃圾填埋场
地下水污染治理
原位化学耦合微生物注射井
可渗透反应墙
Domestic waste landfill
Groundwater pollution control
In-situ chemical coupling microbial injection well
Permeable reactive barrier
