地热水中硼与碳酸盐类矿物共沉淀过程研究

Study on the co-precipitation process of boron and carbonate minerals in geothermal water

高温地热水通常具有硼含量较高的特点,给地热区周边环境及地热水资源的开采带来了诸多负面影响。通过在人工地热水中利用CaCl_(2)与Li_(2)CO_(3)模拟过饱和富硼地热水中碳酸盐类矿物的沉淀过程,分析不同反应条件对硼与碳酸盐类矿物共沉淀过程的影响,为解决高硼地热水带来的环境问题提供理论依据。实验结果表明:共沉淀中硼含量随初始硼浓度和pH的升高而增加,随温度的升高而减少。后续可通过开展实地考察、取样分析等方式进一步探究不同条件对共沉淀中硼含量的实际影响。

High temperature geothermal water is usually characterized by high boron content, which brings many negative impacts on the surrounding environment and the exploitation of geothermal water resources. By simulating the precipitation process of carbonate minerals in supersaturated boron-rich geothermal water with CaCl_(2) and Li_(2)CO_(3), the effects of different reaction conditions on the co-precipitation process of boron and carbonate minerals were analyzed, providing theoretical basis for solving the negative problems caused by high boron geothermal water. The experimental results show that the boron content in co-precipitation increases with the increase of initial boron concentration and pH, but decreases with the increase of temperature. The actual influence of different conditions on the boron content in co-precipitation can be further explored through field investigation and sampling analysis.