水化学和环境同位素在示踪枣庄市南部地下水硫酸盐污染源中的应用

发布时间：2018-03-06 20:34

  本文选题：岩溶地下水　切入点：水化学　出处：《环境科学》2016年12期 　论文类型：期刊论文

【摘要】：岩溶地下水是枣庄市工农业生产以及居民饮用水的重要供水水源.近年来,随着工业化及城市化的发展,硫酸盐污染日益突出.于2014年8月共采集枣庄市南部不同深度地下水和地表水样品36组,在分析其水化学及δD、δ~(18)O-H_2O、δ~(34)SSO_4~(2-)同位素组成的基础上,通过分析区域地下水水文地球化学演化过程及人为输入的影响,识别了地下水硫酸盐污染的范围和途径.结果表明,区内地下水水化学类型主要为HCO_3·SO_4-Ca型,水化学组分主要来源于碳酸盐岩和硫酸盐矿物的溶解、黄铁矿氧化以及人为活动的影响;地下水主要来源于大气降水补给,地表水与不同深度地下水水力联系密切;地下水中δ~(34)SSO_4~(2-)含量的变化范围为0.2‰~9.3‰,与SO_4~(2-)含量的关系分析显示,硫酸盐具有多种来源,主要包括石膏溶解、黄铁矿氧化、化肥淋滤与工业废水下渗污染.除原生地质成因影响外,工矿企业的废水下渗是造成当地地下水硫酸盐含量升高的主要原因.
[Abstract]:Karst groundwater is an important water source for industrial and agricultural production and drinking water for residents in Zaozhuang. In recent years, with the development of industrialization and urbanization, Sulfate pollution is becoming more and more serious. In August 2014, 36 groups of groundwater and surface water samples of different depths in southern Zaozhuang City were collected. Based on the analysis of their hydrochemistry and isotopic compositions of 未 D, 未 ~ (18) O -H _ 2O, 未 ~ (34) SSO-S _ (4) O ~ (2), By analyzing the evolution process of regional groundwater hydrogeochemistry and the influence of human input, the range and approach of groundwater sulfate pollution are identified. The results show that the hydrochemical types of groundwater in this area are mainly HCO_3 路SO_4-Ca type. The hydrochemical components are mainly derived from the dissolution of carbonate rocks and sulfate minerals, the oxidation of pyrite and the influence of human activities, and the groundwater is mainly derived from the recharge of atmospheric precipitation, and surface water is closely related to groundwater at different depths. The analysis of the relationship between the content of 未 ~ (3 +) ~ (4) so _ (4) in groundwater is from 0.2 鈥，

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