彰武县浅层地下水氟污染特征及成因分析

从氟的来源以及迁移和富集的影响因素角度,对彰武县浅层地下水氟污染特征及成因进行了探讨。结果表明：研究区浅层地下水氟含量较高,有32.0%的监测点氟含量超出国家地下水Ⅲ类水质标准。含氟岩石的溶解和土壤水溶态氟的淋溶是区内地下水氟的主要来源;浅层地下水的组成及类型、区内气候干旱、地形平坦、含水层渗透系数低、径流缓慢是形成高氟地下水的决定因素;“三废”排放也加促了地下水氟含量增高。并提出了相应的改水建议。

Characteristics and Causes of Fluorine Pollution in Shallow Groundwater in Zhangwu County

The characteristics and causes of fluorine pollution in shallow groundwater in Zhangwu County were discussed in view of the factors influencing the sources,migration and enrichment of fluorine.The results showed that the fluorine contents in shallow groundwater were high,which exceeded the third grade of the national underground water quality standard in 32.0% monitoring points.The fluorinen in shallow groundwater was mainly from the dissolution of rock with fluorine and the leaching of water soluble fluorine in soil. The compositions and types of shallow groundwater, dry climate,flat topography, low permeability coefficient of aquifer and slow runoff were the determinants. Waste emissions had certain contribution to increase the fluorine content. The measures of reducing the fluoride were suggested.