Dragonja垃圾填埋场的示踪剂测试

Q3 Earth and Planetary Sciences Geologija Pub Date : 2020-12-30 DOI:10.5474/geologija.2020.016
B. C. Curk
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引用次数: 0

摘要

本文介绍了在德拉贡贾无害垃圾填埋场进行的铀示踪实验结果。示踪试验的目的是确定从垃圾填埋场到地下水的潜在污染物的动力学。垃圾填埋场位于形成山坡的复理石风化层上。山脚下为Dragonja河的粉质粘土和部分砂质冲积沉积物。铀的迁移取决于降水的强度和持续时间、潜在的蒸散量、渗透性、降水渗入垃圾填埋场以及粉煤灰风化层的饱和度。尿嘧啶首次出现在P2观察井中,该观察井位于注入点的下游,沿水流方向。观测井P1不在直接流动的方向上,因此只有分散的示踪羽流的边缘出现在P1中。复理石风化层的地下水排入冲积平原,地下水中的铀含量被稀释。因此,在观察井P5中观察到铀浓度的缓慢增加和减少。由于蒸发蒸腾量高,地下水位一直在下降,直到10月份,秋季降水事件后地下水位开始上升。示踪实验证实了填埋场地质结构的非均质性和复杂性。
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Tracer test on the Dragonja landfill
The paper presents the results of a tracer experiment with the uranine tracer at the non-hazardous landfill of Dragonja. The purpose of the tracer test was to determine the dynamics of the potential pollutants from the landfill to the groundwater. The landfill lies on the thicker weathered layer of flysch rock that forms the slope of the hill. At the foot of the hill are silty clay and partly sandy alluvial sediments of the Dragonja River. The transport of uranine depends on the intensity and duration of precipitation, potential evapotranspiration, permeability, precipitation infiltration into the landfill, and saturation of the weathering layer of flysh. Uranine first appeared in the observation well P2, which is located downstream of the injection point, in the direction of water flow. Observation well P1 is not in the direction of direct flow and therefore only the edge of the dispersed tracer plume appeared in P1. The groundwater from the flysch weathered layer drains into the alluvial plain and the uranine concentrations are diluted in the groundwater. In the observation well P5 a slow increase and decrease of the uranium concentration was therefore observed. Due to the high evapotranspiration, the groundwater levels were falling until October, when they began to rise after autumnal precipitation events. The tracer experiment confirmed the heterogeneity and complexity of the geological structure of the landfill site.
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来源期刊
Geologija
Geologija Earth and Planetary Sciences-Geophysics
CiteScore
1.00
自引率
0.00%
发文量
10
审稿时长
10 weeks
期刊最新文献
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