Freshening of salinized groundwater in Gdańsk Quaternary aquifer - Publikacja - MOST Wiedzy

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Freshening of salinized groundwater in Gdańsk Quaternary aquifer

Abstrakt

The main Quaternary aquifer in the Gdańsk region connects directly with salt waters of the Martwa Wisła River and the Gulf of Gdańsk. This aquifer has been used for many years by large municipal and industrial intakes located on the marine lowlands, with maximum output 6236 m3 /h in 1985. Owing to an intensive exploitation, groundwater in the area of the Old Gdańsk has been salinized by intrusion of salt water from the Martwa Wisła River. Concentration of chlorides in some wells reached 2000-3000 mgCl/dm3 , leading to degradation of groundwater resources in this area. As a consequence the “Grodza Kamienna” groundwater intake had to be put out of operation. Salt water intrusion from the Gulf of Gdańsk was provoked in 1970s and 1980s by overexploitation of groundwater resources by three municipal intakes situated on the marine terrace. Concentration of chlorides in some piezometers of the “Czarny Dwór” groundwater intake amounted to 700 – 1000 mgCl/dm3 , however in the pumping wells of the intake it never exceeded the drinking water standards. In 1990s groundwater pumping rates in both areas were lowered. As a result, the chloride concentration decreased and the resources started to recover. Current observations prove that groundwater of the main Quaternary aquifer is freshening and salt water intrusion has stopped. However, elevated concentrations of chlorides are observed in the shallow aquifer, due to anthropopressure.

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Informacje szczegółowe

Kategoria:
Aktywność konferencyjna
Typ:
materiały konferencyjne indeksowane w Web of Science
Opublikowano w:
E3S Web of Conferences nr 54, strony 1 - 6,
ISSN:
Tytuł wydania:
25th Salt Water Intrusion Meeting (SWIM 2018) strony 1 - 6
Język:
angielski
Rok wydania:
2018
Opis bibliograficzny:
Przewłócka M., Jaworska-Szulc B., Kozerski B., Pruszkowska-Caceres M., Szymkiewicz A., Kwaterkiewicz A..: Freshening of salinized groundwater in Gdańsk Quaternary aquifer, W: 25th Salt Water Intrusion Meeting (SWIM 2018), 2018, ,.
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1051/e3sconf/20185400025
Weryfikacja:
Politechnika Gdańska

wyświetlono 26 razy

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