活性氧化铝去除碱性地下矿化水中氟离子研究

Removal of Fluoride from Alkaline Underground Mineralized Water by Activated Alumina

采用静态和动态2种方法研究活性氧化铝吸附复杂的碱性地下矿化水样中的F-,探究优化吸附条件以及其对其余各组分含量的影响。结果表明,活性氧化铝在15 min的预处理后,处理水在偏酸性、流速为0.5 m/h的控制条件下,吸附76 h后,水中的F-的质量浓度<1.5 mg/L,处理效果很好,达到GB 8537-2008所规定的质量浓度≤1.5mg/L的要求。活性氧化铝吸附对矿化水中的主要矿物质锂和锶的含量有一定程度的影响,对偏硅酸含量影响较小。

The adsorption of fluoride in complex alkaline underground mineralized water samples by activated alumina was studied by static and dynamic states methods. The optimized adsorption conditions and its effect for the contents of other components were explored. The results showed that after pretreatment with activated alumina for 15 min, the treated water was slightly acidic and adsorbed at a flow rate of 0.5 m/h for 76 h, the mass concentration of fluoride in the water was less than 1.5 mg/L, and the treatment effect was very good, which met the requirement GB 8537 - 2008. The adsorption of active alumina has a certain effect on the contents of lithium and strontium in mineralized water, and has less effect on metasilicic acid content.