| 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 |
| 摘要点击 3079 全文点击 1261 投稿时间：2016-04-23 修订日期：2016-07-23 |
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| 中文关键词 岩溶地下水 水化学 硫酸盐 硫同位素 枣庄市 |
| 英文关键词 karst groundwater hydrochemistry sulfate sulfur isotope Zaozhuang City |
| 作者 | 单位 | E-mail | | 马燕华 | 中国地质大学(武汉)环境学院, 生物地质与环境地质国家重点实验室, 武汉 430074 | yanhua_ma9911@hotmail.com | | 苏春利 | 中国地质大学(武汉)环境学院, 生物地质与环境地质国家重点实验室, 武汉 430074 | chl.su@cug.edu.cn | | 刘伟江 | 中国地质大学(武汉)环境学院, 生物地质与环境地质国家重点实验室, 武汉 430074
环境保护部环境规划院, 北京 100012 | | | 朱亚鹏 | 中国地质大学(武汉)环境学院, 生物地质与环境地质国家重点实验室, 武汉 430074 | | | 李俊霞 | 中国地质大学(武汉)环境学院, 生物地质与环境地质国家重点实验室, 武汉 430074 | |
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| 中文摘要 |
| 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、δ18 O-H2O、δ34 S-SO42-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HCO3·SO4-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δ34 S-SO42-含量的变化范围为0.2‰~9.3‰，与SO42-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. |
| 英文摘要 |
| Karst groundwater is an important source of water supply for the industrial and agricultural proposes and drinking water in Zaozhuang City. In recent years, with the development of industrialization and increasing of domestic water consumption, the sulfate pollution of karst groundwater has become a serious problem. 36 samples of surface and different depth of groundwater were collected in southern Zaozhuang City in August, 2014. Based on the analysis of the hydrochemical composition and the isotopic characteristics of δD, δ18O-H2O, and δ34 S-SO42-, this paper analyzed the influence of hydrogeochemical evolution of groundwater and human input in the area, in order to identify the scope and ways of sulfate pollution. The results showed that the basic hydrochemical type was HCO3·SO4-Ca, formation of geochemical components mainly included the dissolution of carbonate and sulfate minerals, oxidation of pyrite and the influence of human activities. Moreover, the main recharge of groundwater in study area was the atmospheric precipitation. The hydraulic connection was closely linked between the surface water and different depth of groundwater. The variation range of groundwater δ34 S-SO42- values was from 0.2‰ to 9.3‰, and the relationship between the δ34 S-SO42- value and SO42- value of groundwater showed different sources of sulfate. The sources of sulfate in groundwater included the dissolution of gypsum, the oxidation of pyrite, the leaching of fertilizer and infiltration of domestic sewage and industrial wastewater. In addition to the original geological factors, wastewater infiltration of industrial and mining enterprises was the main reason for the increase of sulfate content in the groundwater. |
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