BADANIA HYDROGEOLOGICZNE Z UŻYCIEM PAKERA W STUDNIACH Z OBSYPKĄ ŻWIROWĄ

Abstract

HYDROGEOLOGICAL RESEARCH WITH USE OF THE PACKER IN GRAVEL PACK WELLSAbstract. The article describes an experiment involving pumping of groundwater from specific sections of the aquifer with a packer. The aim of the experiment was to identify the vertical differentiation of groundwater chemistry of the Wielkopolska Buried Valley Aquifer near Joanka well-field in order to explain the reasons for the occurrence of “brown water”. The results of multilevel sampling have been used to calibrate the groundwater contaminant transport model. The natural markers (water colour, pH, conductivity and chloride concentration)were used to estimate the parameters of multilevel sampling (pumping rate and pumping time). It appears that in case of multilevel sampling of the productive well with the gravel pack, the representative water sample could be obtained only by short pumping time and small pumping rate.