کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1058777 947141 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of groundwater contamination beneath an urban environment: The Besòs river basin (Barcelona, Spain)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Evaluation of groundwater contamination beneath an urban environment: The Besòs river basin (Barcelona, Spain)
چکیده انگلیسی

The urban groundwater of the central Besòs river basin (the La Llagosta aquifer) has become contaminated due to the infiltration of wastewater from septic tanks and sewage networks, and by industrial activities located in urban areas.The groundwater hydrogeochemistry of the La Llagosta aquifer was characterized using isoconcentration maps, hydrogeochemical diagrams (Piper, Schoeller–Berkaloff) and by analyzing hydrogeochemical changes along a flow-path that crosses an urban and peripheral industrial area in the main alluvial aquifer (the La Llagosta unit). The evolution of cations, anions and heavy metals along the flow path and the use of the PHREEQC numerical code indicate a complex set of geochemical processes, which result from the interaction between the sources of pollution, the groundwater flow and the mineral composition of the aquifer materials.The contaminated groundwater below the urban areas shows high contents of NO3− (90–100 mg/L) and an increase in the concentrations of Ca2+ and Mg2+ which coincides with a decrease in pH.The Eh shows greater variation than the pH along the flow line studied, with values ranging between 56 mV in the industrial area and 370 mV in the urban area. The area with the lowest Eh value coincides with the highest concentrations of dissolved Fe (4.7 mg/L) and Mn (0.22 mg/L).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 85, Issue 2, October 2007, Pages 259–269
نویسندگان
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