Navarro Andrés, Carbonell Montserrat
Depto. M. Fluidos, ETSEIT, Universidad Politécnica de Cataluña, Colón 7, Terrassa 08222, Spain.
Environ Geochem Health. 2008 Jun;30(3):273-89. doi: 10.1007/s10653-007-9123-z.
The contamination of groundwater in the aquifer of the La Llagosta basin (Besòs river basin) due to waste disposal in quarries formerly used for the extraction of dry raw materials has led to the cessation of groundwater extraction for public water supply. The mobilization of pollutants was largely caused by fluctuations in piezometric levels, which led to the washing of buried waste. The hydrogeochemical processes associated with uncontrolled waste disposal in these landfilled areas of the La Llagosta basin aquifer were studied along a flow path that crosses the contaminated area. The PHREEQC code was used to establish the reactions associated with the different mineral phases through inverse modeling. This transport code, ionic exchange phenomena, surface reactions and balance (mineral phase) reactions were used to simulate the dilution phenomenon associated with the pollution after the potential removal of the sources of contamination. One-dimensional advective-dispersive modeling indicates a substantial reduction in Ca, Mg, Na and SO2(4-) within one year and stabilization within four years.
由于以前用于提取干原料的采石场中的废物处置，拉利亚戈斯塔盆地（贝索斯河流域）含水层中的地下水受到污染，导致公共供水的地下水开采停止。污染物的迁移主要是由测压水位的波动引起的，这导致了掩埋废物的冲刷。沿着一条穿过污染区域的流动路径，研究了与拉利亚戈斯塔盆地含水层这些填埋区域中不受控制的废物处置相关的水文地球化学过程。使用PHREEQC代码通过反演建模来确定与不同矿物相相关的反应。该传输代码、离子交换现象、表面反应和平衡（矿物相）反应被用于模拟在潜在去除污染源后与污染相关的稀释现象。一维平流-弥散建模表明，钙、镁、钠和硫酸根离子在一年内大幅减少，并在四年内趋于稳定。
