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Wpływ stosowanych praktyk rolniczych na dopływ wód podziemnych oraz azotanów do Zatoki Puckiej

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Potrykus D.

Przegląd Geologiczny

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2024

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tom Vol. 72, nr 1

15--25

EN

Eutrophication of marine baśni associated with submarine groundwater discharge is currently one of the most important challenges in modern coastal hydrogeology, and is classified as a serious global environmental problem. Aparticular source of groundwater pollution is agricultural activity, which is commonly carried out in the coastal zone. Research was conducted on arepresentative part of the Bay of Puck watershed, dominated by agriculturall anduse. The geological setting of the study area is heterogeneous, which has a significant influence on groundwater flow and occurrence in the multi-aquifer hydrosystem, draining into Puck Bay. The impact of agricultural practices on groundwater and nitrate discharge to the Puck Bay was determined, byan integrated modeling approach, developed using combination of the SWAT, MODFLOW-NWT and MT3DMS codes. Spatial and seasonal variations of the N-NO3 load leached from the soil profile and the infiltration of precipitation are convergent with observed trends in the discharge of groundwater and N-NO3 loads into Puck Bay. The simulations show that 1,355.13 m3/h of ground- waterand1.87kg/h (16. 4 t/year) of N-NO3 loadare discharged into Puck Bay from the aquifers analyzed, the majority of which comes froman upper aquifer. The distribution of the values as determined was found to be influenced by agricultural practices, resulting from changes in crop structure, fertilizer management, cultivation methods and grazing.

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Hydrogeohazards in post-mining areas : the phenomenon of uncontrolled groundwater outflows in wetlands

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Potrykus D. , Lidzbarski M. , Tarnawska E.

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2022

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tom Vol. 66, No. 1

art. no. 9

EN

Aquifers formed in the wetland area around the closed lacustrine chalk mine at Mierzyno (northern Poland) are distinguished by a specific groundwater flow system, the main component of which is lateral flow and ascent seepage from the deep aquifer to the ground surface. In investigating the origin of the uncontrolled groundwater outflows and the phenomenon of progressing spring pools, field and laboratory work, as well as model studies of groundwater flow, allowed assessment of damage to the soil and aqueous environment. These occurred due to defective reclamation of post-mining areas, as a result of which the natural hydrodynamic balance in the groundwater was disturbed. Artesian pressure in the deep aquifer caused layer interruption at the boundary of the lacustrine chalk deposit. In consequence, strong uncontrolled outflow of groundwater occurred, and the accompanying spring pools are changing their position as a result of headward erosion. So far, the amount of washed-out carbonate sediment exceeds 5,600 m3.

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Analiza jakości wód podziemnych w rejonie składowiska odpadów w Gniewinie na potrzeby planowanej rekultywacji

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Potrykus D. , Piskorek K. , Rohde D.

Biuletyn Państwowego Instytutu Geologicznego

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2019

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tom nr 475, Hydrogeologia z. 16

191--197

PL

Składowiska odpadów stanowią jedno z potencjalnych ognisk zanieczyszczeń wód podziemnych. W celu uniknięcia zanieczyszczenia wód podziemnych w dnie składowiska odpadów w Gniewinie został ułożony drenaż zbierający przesączające się przez odpady odcieki i odprowadzający je grawitacyjnie do zbiornika retencyjnego. Celem badań było określenie jakości wód podziemnych w rejonie składowiska odpadów w Gniewinie oraz analiza stopnia ich zanieczyszczenia pod kątem zróżnicowania przestrzennego i czasowego. Autorzy przeanalizowali wyniki badań wód podziemnych pochodzące z monitoringu składowiska odpadów w Gniewinie, a także porównali stężenia wybranych wskaźników między okresem powstawania sieci monitoringu z aktualnymi wynikami. Analiza wykazała zmienność składu chemicznego wód podziemnych zarówno między poszczególnymi otworami obserwacyjnymi, jak również w czasie.

EN

Landfills of solid waste are among the potential sources of groundwater pollution. To avoid polluting by strongly contaminated leachate, the Gniewino landfill has been designed. It has a leachate collection system to collect leachate by a drainage system into retention tanks. The purpose of the research was to assess the groundwater quality near the Gniewino landfill and to analyze the temporal and spatial diversity of contamination. The authors analyzed the results of groundwater monitoring of the Gniewino landfill and compared the concentrations of selected indicators between the period of the monitoring system construction and the recent times. The study showed that the groundwater quality in the Gniewino landfill area was variable in each sampling well and was changing in time.