某铀矿下游河流水化学特征与铀的分布特征分析

发布时间：2018-03-09 11:29

本文选题：地表水　切入点：水化学特征　出处：《有色金属(冶炼部分)》2017年03期 　论文类型：期刊论文

【摘要】：以某铀矿废水纳入河—临水河为研究对象,分析其水化学特征与铀的分布特征,并探明在不同季节时铀矿对河流的影响程度。结果表明,临水河流域属于低矿化度水,其TDS整体变化范围为25.84~45.68mg/L,在平水期,矿区附近流域水化学类型由HCO_3-Ca型变为HCO_3-SO_4-Ca型水,丰水期未有显著改变。河水中铀体现出时空不同分布特征。空间上,临水河流域在上、中、下游呈现出先增高再降低的趋势;时间上,相同点位上平水期的铀含量高于丰水期。以江西省背景值为标准采用单因子指数法评价临水河放射性铀污染,临水河仅有中游地区受到污染,但整体流域铀含量远远低于WHO的限值,处于安全范围之内。
[Abstract]:Taking a uranium mine wastewater as an object of study, this paper analyzes its hydrochemical characteristics and uranium distribution characteristics, and finds out the influence of uranium ore on the river in different seasons. The results show that the Linshui river basin belongs to low salinity water. The whole variation range of TDS is 25.84 ~ 45.68 mg 路L ~ (-1). During the normal water period, the hydrochemical type of watershed near the mining area changed from HCO_3-Ca type to HCO_3-SO_4-Ca type water, but no significant change was found in the high water period. The uranium in the river water shows different distribution characteristics in time and space. In space, the watershed near the river is in the upper and middle. The uranium content in the horizontal period of the same position is higher than that in the high water period. Based on the background value of Jiangxi Province, the single factor index method is used to evaluate the radioactive uranium pollution in the Linshui River. Only the middle reaches of Linshui River are polluted, but the uranium content in the whole basin is far below the limit of WHO and is within the safe range.
【作者单位】：东华理工大学水资源与环境工程学院;核工业北京地质研究院;
【基金】：国家自然科学基金资助项目(41562011,41362011,41162007,41502235) 江西省研究生创新基金(YC2015-S280)
【分类号】：X522;X753

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