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Formation and In Situ Treatment of High Fluoride Concentrations in Shallow Groundwater of a Semi-Arid Region: Jiaolai Basin, China

Author

Listed:
  • Zongjun Gao

    (College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Mengjie Shi

    (College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Hongying Zhang

    (College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Jianguo Feng

    (College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Shaoyan Fang

    (College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Yechen Cui

    (College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

Abstract

Fluorine is an essential nutrient, and excessive or deficient fluoride contents in water can be harmful to human health. The shallow groundwater of the Jiaolai Basin, China has a high fluoride content. This study aimed to (1) investigate the processes responsible for the formation of shallow high-fluoride groundwater (SHFGW); (2) identify appropriate methods for in situ treatment of SHFGW. A field investigation into the formation of SHFGW was conducted, and the results of experiments using soils from high-fluoride areas were examined to investigate the leaching and migration of fluoride. The results showed that the formation of SHFGW in the Jiaolai Basin is due to long-term geological and evaporation processes in the region. Stratums around and inside the basin act as the source of fluoride whereas the terrain promotes groundwater convergence. The hydrodynamic and hydrochemical conditions resulting from slow groundwater flow along with high evaporation and low rainfall all contribute to the enrichment of fluoride in groundwater. In situ treatment of SHFGW may be an effective approach to manage high SHFGW in the Jiaolai Basin. Since soil fluoride in high-fluoride areas can leach into groundwater and migrate with runoff, the construction of ditches can shorten the runoff of shallow groundwater and accelerate groundwater loss, resulting in the loss of SHFGW from high-fluoride areas through river outflow. The groundwater level will be reduced, thereby lowering the influence of evaporation on fluoride enrichment in shallow groundwater. The results of this study can act a reference for further research on in situ treatment for high-fluoride groundwater.

Suggested Citation

  • Zongjun Gao & Mengjie Shi & Hongying Zhang & Jianguo Feng & Shaoyan Fang & Yechen Cui, 2020. "Formation and In Situ Treatment of High Fluoride Concentrations in Shallow Groundwater of a Semi-Arid Region: Jiaolai Basin, China," IJERPH, MDPI, vol. 17(21), pages 1-24, November.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:21:p:8075-:d:439013
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    References listed on IDEAS

    as
    1. Maria Cristina Collivignarelli & Alessandro Abbà & Marco Carnevale Miino & Vincenzo Torretta & Elena Cristina Rada & Francesca Maria Caccamo & Sabrina Sorlini, 2020. "Adsorption of Fluorides in Drinking Water by Palm Residues," Sustainability, MDPI, vol. 12(9), pages 1-12, May.
    2. Xiting Long & Keneng Zhang & Ruiqiang Yuan & Liang Zhang & Zhenling Liu, 2019. "Hydrogeochemical and Isotopic Constraints on the Pattern of a Deep Circulation Groundwater Flow System," Energies, MDPI, vol. 12(3), pages 1-18, January.
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