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    • 四川盆地龙马溪组页岩气开采废水的天然放射性水平调查研究

    Hong-lei WANG,Wei RAO,Mao-dan LUO,Qiang YU

    Sichuan Environment（2019）

    Cited 4|Views13
    Abstract
    基于对页岩气开采放射性影响的关注,对四川盆地龙马溪组页岩气开采废水天然放射性水平进行调查研究.采集样品9个,监测其总α、总β和γ核素等天然放射水平,并与《污水综合排放标准》及四川省天然放射性水平进行对比分析.结果 显示,四川盆地龙马溪组页岩气开采所使用的钻井液和压裂液等未导致龙马溪组地层高铀中的238U大量溶出,地层钾盐含量较高和钾盐的高溶解性导致出现40K呈现偏高的趋势,压裂返排液外排可能造成受纳水体天然放射性核素238U、232Th、40K浓度明显增加.
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    【要点】：研究四川盆地龙马溪组页岩气开采废水天然放射性水平，发现废水中的放射性核素浓度增加，但未导致高铀大量溶出。
    

    【方法】：通过采集9个废水样品，监测其总α、总β和γ核素等天然放射水平，并与相关标准进行对比分析。
    

    【实验】：采集了9个废水样品，使用监测设备对样品的总α、总β和γ核素等天然放射性水平进行检测，结果发现废水中的238U、232Th、40K浓度增加，但未超出《污水综合排放标准》及四川省天然放射性水平。