矿井水地下回灌过程中主要污染组分迁移转化规律研究  

Study on transportation and transformation of principal pollutants during mine drainage artificial recharge

作　　者：赵彩凤 ZHAO Cai-feng(CCTEG Xi＇an Research Institute,Xi＇an 710054,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710054

出　　处：《地下水》2018年第4期18-20,共3页Ground water

基　　金：国家重点研发计划(2016YFC0501104);中煤科工集团西安研究院有限公司创新基金面上项目(2018XAYMS03)

摘　　要：为了研究矿井水地下回灌过程中主要污染组分迁移转化规律,以神府矿区浅埋煤层为对象,开展了矿井水地下回灌实验,结果表明:研究区矿井水中超标的项目有TDS、CODcr、Cl、F、总大肠菌群、大肠埃希氏菌以及肉眼可见物,SO_4、NH_4、NO_3等指标的浓度也较高。回灌出水中含盐量在前期逐渐增大,后期基本稳定;氧化还原反应使TOC浓度减少超过50%,其中大分子有机物在包气带环境中被优先去除。回灌过程中NH_4的去除主要发生在包气带,主要发生氧化反应,去除率可达73.1%;NO_3去除主要发生在饱和带,平均去除率为85.7%,主要发生了还原反应。In order to research the law of transportation and transformation of principal pollutants during mine drainage ar- tificial recharge, we carried out some experiments of mine drainage artificial recharge based on shallow buried coalfield area in Shenfu mine area. The results showed that some mine drainage indexes （TDS, CODcr, C1, F, total coliform,escherichia colt and lookable） were exceeding the standard. The concentrations of SO4 , NH4 , NO3 were high also. During mine drainage arti- ficial recharge, the concentration of TDS increased gradually in the early stage, and remained stable in the later stage. The concentration of TOC was reduced more than 50% with oxidation - reduction reactions, and larged molecular organic compo- nents could be removed in vadose zone. NH4 was removed 73. 1% with oxidation reaction in vadose zone, and NO3 was re- moved 85.7% with reduction reaction in saturated zone.

关 键 词：矿井水 地下回灌 污染组分 迁移转化 氧化还原反应 

分 类 号：P641.25[天文地球—地质矿产勘探]