饮用水源地地下水氨氮特殊脆弱性研究

发布时间：2018-03-07 13:57

本文选题：特殊脆弱性　切入点：指标体系　出处：《水文地质工程地质》2017年06期 　论文类型：期刊论文

【摘要】：特殊脆弱性分析评价是实现定量研究地下水受某种特定污染物威胁的有效手段。文章以佳木斯市七水源地为研究对象,在分析区域水文地质条件的基础上,选取地下水防污性能评价模型(DRASTIC)用于研究区固有脆弱性的评价,侧重分析区内土地利用类型、稳定开采条件下的地下水水位降深等人为因素,以及典型污染物氨氮在特定介质中的通量这一特殊人类活动因素,构建了水源地特殊脆弱性评价模型。以研究区内28组浅层地下水样品中氨氮浓度和对应采样点特殊脆弱性指数之间的相关性来评估模型的可靠性,计算结果显示二者相关系数为0.67,具有较好的相关性,说明该评价系统可靠。特殊脆弱性计算结果显示研究区内以中等以下脆弱性为主,其中水源开采区和西南丘陵区特殊脆弱性较高,计算结果有助于实现水源地的科学管理。
[Abstract]:The special vulnerability analysis and evaluation is an effective means to quantitatively study groundwater threatened by certain specific pollutants. This paper takes the Qishui Source area of Jiamusi as the research object and analyzes the hydrogeological conditions of the region. The groundwater anti-pollution performance evaluation model (DRASTIC) is selected to evaluate the inherent vulnerability of the study area, and the human factors such as the type of land use in the study area and the groundwater level drop under the condition of stable exploitation are emphatically analyzed. And the flux of ammonia nitrogen in a particular medium as a particular human activity factor, A water source special vulnerability assessment model was established to evaluate the reliability of the model based on the correlation between ammonia nitrogen concentration in 28 groups of shallow groundwater samples and the special vulnerability index of corresponding sampling points. The calculated results show that the correlation coefficient is 0.67, which shows that the evaluation system is reliable. The special vulnerability of water source mining area and southwest hilly area is high, and the result of calculation is helpful to realize the scientific management of water source area.
【作者单位】：北京师范大学水科学研究院/地下水污染控制与修复教育部工程研究中心;
【基金】：国家水体污染控制与治理科技重大专项(2014ZX07201-010) 国家自然科学基金项目资助(41402211,41372233)
【分类号】：TU991.112;X523

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