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张怀胜,蔡五田,边超,等. 衡水市桃城区浅层高氟地下水水化学特征与成因分析[J]. 科学技术与工程, 2021, 21(24): 10191-10198.
Zhang Huaisheng,Cai Wutian,Bian Chao,et al.Hydrochemical characteristics and genetic analysis of shallow high-fluorine groundwater in Taocheng District, Hengshui City[J].Science Technology and Engineering,2021,21(24):10191-10198.
衡水市桃城区浅层高氟地下水水化学特征与成因分析
Hydrochemical characteristics and genetic analysis of shallow high-fluorine groundwater in Taocheng District, Hengshui City
投稿时间:2021-02-11  修订日期:2021-08-12
DOI:
中文关键词:  衡水市桃城区  高氟地下水 水化学特征  影响因素
英文关键词:Taocheng District, Hengshui City  high fluoride groundwater  hydrochemical characteristics  influencing factors
基金项目:地下水饮用水源地及保护区基础环境状况调查方法与示范(2017FY100401)、京津冀重点区域地下水污染过程识别方法(2018ZX07109-001-02)
           
作者单位
张怀胜 中国地质调查局水文地质环境地质调查中心
蔡五田 中国地质调查局水文地质环境地质调查中心
边超 中国地质调查局水文地质环境地质调查中心
刘金巍 中国地质调查局水文地质环境地质调查中心
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中文摘要:
      为研究衡水市桃城区浅层含氟地下水化学特征与成因演化过程,对桃城区浅层地下水进行了野外调查与取样测试。结果表明,桃城区浅层地下水以Cl.SO4型为主,高氟水多见于HCO3.Cl型水中,且分布于研究区南侧。F-与HCO3-在相关性分析中体现出显著正相关,与Ca2+和Mg2+存在负相关。在研究区因气候条件创造的强蒸发、碱性环境下,F-主要来源于矿物的溶解。石膏与萤石在研究区地层中处于较为稳定的溶解态,为地下水提供了F-与Ca2+,环境中偏高的HCO3-含量同样有利于F-在碱性环境下解吸。综上所述,桃城区浅层地下水化学特征受溶滤作用、蒸发浓缩和离子交替与解吸左右共同影响,水体中含氟矿物CaF2的的溶解平衡与阴阳离子的交替吸附作用是桃城区地下水F-含量变化的主要控制因素。
英文摘要:
      In order to study the chemical characteristics and genetic evolution process of shallow fluorine-containing groundwater in Taocheng District, field investigation and sampling test were carried out on shallow groundwater. The results show that the shallow groundwater in Taocheng District is mainly Cl·SO4 type, and the high fluoride water is distributed south of the study area and is more common in HCO3·Cl type water. F- has a significant positive correlation with HCO3- and is negatively correlated with Ca2+ and Mg2+. In the strong evaporation and alkaline environment created by climatic conditions in the study area, F- mainly comes from the dissolution of minerals. Gypsum and fluorite are in a relatively stable dissolved state continously providing F- and Ca2+ for groundwater. The high HCO3- content is also conducive to F- desorption in alkaline environments. In summary, the chemical characteristics of shallow groundwater in Taocheng District are affected by the combined effects including leaching effect, evaporation concentration and ion exchange-desorption. The dissolution equilibrium of CaF2 and ion exchange-desorption are the main controlling factors for the change of groundwater F- content in Taocheng District.
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