Abstract:
: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.
journal_name
Environ Geochem Healthjournal_title
Environmental geochemistry and healthauthors
Navarro A,Carbonell Mdoi
10.1007/s10653-007-9123-zsubject
Has Abstractpub_date
2008-06-01 00:00:00pages
273-89issue
3eissn
0269-4042issn
1573-2983journal_volume
30pub_type
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