广东省某稀土矿区地下水污染修复工程设计案例  

Design Case of Groundwater Pollution Remediation Project in a Rare Earth Mining Area in Guangdong Province

作　　者：刘帅 Liu Shuai(Guangdong Environmental Protection Engineering Research&Design Institute Co.,Ltd.,Guangzhou 510080,China)

机构地区：[1]广东省环境保护工程研究设计院有限公司,广东广州510080

出　　处：《广东化工》2024年第17期136-138,共3页Guangdong Chemical Industry

摘　　要：针对广东省某稀土矿区因非法盗采活动导致地下水受到氨氮、硝酸盐氮污染的现状,在地表生态修复项目基础上开展地下水污染修复工程,采用“原位阻隔+原位化学耦合微生物修复+改进型可渗透反应墙+生态沟”的集成修复技术方案,并对工程措施进行详细设计。修复工程实施周期约10个月并顺利通过项目验收,可渗透反应墙下游中地下水氨氮相较于修复区域最高浓度去除率为99.7%,硝酸盐氮浓度低于《地下水质量标准》(GB/T14848-2017)Ⅲ类,达到了既定的修复目标,改善了矿区环境质量,环境和社会效益显著。项目的实施可为今后类似项目提供技术支撑和工程参考。In response to the current situation of groundwater pollution caused by illegal mining activities in a rare-earth mining area in Guangdong Province,a groundwater pollution remediation project was carried out based on the surface ecological restoration project.The integrated remediation technology scheme of“in-situ barrier+in-situ chemical coupling microbial remediation+improved permeable reaction barrier+ecological ditch”was adopted,and the engineering measures were designed in detail.The implementation period of the restoration project is about 10 months and it has successfully passed the project acceptance.Compared to the highest concentration in the remediation area,the removal rate of ammonia nitrogen in the groundwater downstream of the permeable reaction barrier is 99.7%.The concentration of nitrate nitrogen is lower than Class III in the Groundwater Quality Standard(GB/T14848-2017),which meets the established restoration objectives and improves the environmental quality of the mining area.The environmental and social benefits are significant.The implementation of the project can provide technical support and engineering reference for similar projects in the future.

关 键 词：稀土矿区 地下水污染 原位修复 可渗透反应墙 原位阻隔 

分 类 号：TQ[化学工程]