摘要
选取铀矿区尾矿库周边排放水、渗滤水以及浅层地下水为研究对象,通过现场调查、取样分析、研究铀的含量变化、存在形态以及影响因素。采用地球化学模型PHREEQC-Ⅱ计算水环境中铀的赋存形态。通过SPSS数据处理软件对排放水、渗滤水、浅层地下水中的各化学指标进行相关性分析。结果表明,水环境中近100%的为U(Ⅵ),三组水样中铀主要以UO_2F^+、UO_2F_2、UO_2OH^+、UO_2(CO_3)_2^(2-)、(UO_2)_2CO_3(OH)_3~–和UO_2(OH)_2的形态赋存于水环境中,并且铀浓度含量受HCO^(3-)、SO_4^(2-)等阴离子以及氧化还原电位影响显著。
Surrounding tailings discharge water, percolating water, and shallow groundwater were selected to study and analyze variation in content of uranium, forms of existence, and influence factors. Chemical speciation of uranium in surrounding water was calculated by geochemical models PHREEQC- Ⅱ. Chemical indexes were analyzed by SPSS data processing software for discharge water, percolation water, and shallow groundwater. The results show that uranium in water is almost 100% U（Ⅵ）, existing mainly in forms of UO2F＋, UO2F2 , UO2OH＋, UO2 （COa）22-, （UO2）2COa （OH）3- , and UO2 （OH）2 in three water samples. Uranium concentration in water environment is mainly affected by anions, such as HCO3 , SO4^2 , oxidation-reduction potential.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第5期64-68,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(41362011
41502235)
东华理工大学研究生创新基金(DHYC-2016011)
