摘要
我国南方离子型稀土矿山采用原地浸矿工艺,使用硫酸铵和碳酸铵作为浸矿剂和沉淀剂,导致离子型稀土矿区普遍出现地表水质氨氮超标。为了解决包含历史遗留矿山和停产稀土矿山的矿区地表水污染治理问题,赣州稀土集团有限公司自2018年起开展了国内首次针对离子型稀土矿山小流域级地表水氨氮污染的治理工程并长期运行。根据运行监测数据分析,在稀土矿山小流域设置氨氮污染水处理厂,能够解决整个小流域中稀土矿山带来的水体污染问题,实现稀土矿山有序开采与环境保护。但是在稀土矿山小流域级氨氮污水治理时也存在小流域地表水水质的大幅变化、水量的大幅变化、碳源缺少和经济成本压力大等问题,仍然需要继续探索多种优化治理技术。
In-situ leaching technology is used in ion-absorbed rare earth mines in south China,the ammonium sulfate and ammonium carbonate are used as ore-leaching agent and precipitant,which makes the ammonia nitrogen in surface water form ion-absorbed rare earth mining areas generally exceeds the standard.In order to solve the surface water pollution problem in the mining areas,including the abandoned historical mines and the none-produce mines,Ganzhou Rare Earth Group Co.,LTD has launched the first small watershed surface water plant to solve the ammonia nitrogen pollution of ion-absorbed rare earth mines,since 2018.According to operation monitoring data,the ammonia nitrogen pollution treatment project can solve the problem of water pollution caused by rare earth mines in the small watershed.However,there are also some problems in small watershed surface water plant,such as large changes in surface water quality,large changes in water quantity,lack of carbon source and the cost is high,therefore,it also needs to explore multiple optimization governance techniques.
作者
潘伟
陈国梁
李青
PAN Wei;CHEN Guoliang;LI Qing(Ganzhou Rare Earth Group Co.,Ltd.,Ganzhou Jiangxi 341000,China;BGRIMM Technology Group,Beijing 100160,China)
出处
《有色金属（矿山部分）》
2021年第1期103-107,共5页
NONFERROUS METALS(Mining Section）
关键词
赣州
离子型稀土矿山
小流域地表水治理
氨氮污染
环境保护
Ganzhou
ion-absorbed rare earth mines
small watershed surface water treatment
ammonia nitrogen pollution
environmental protection
