Freshening of salinized groundwater in Gdańsk Quaternary aquifer
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...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2018-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://doi.org/10.1051/e3sconf/20185400025 |
| _version_ | 1818946364151693312 |
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| author | Przewłócka Maria Jaworska-Szulc Beata Kozerski Bohdan Pruszkowska-Caceres Małgorzata Szymkiewicz Adam Kwaterkiewicz Andrzej |
| author_facet | Przewłócka Maria Jaworska-Szulc Beata Kozerski Bohdan Pruszkowska-Caceres Małgorzata Szymkiewicz Adam Kwaterkiewicz Andrzej |
| author_sort | Przewłócka Maria |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-20T08:13:50Z |
| format | Article |
| id | doaj.art-b1236e7b6f524d529e1334ef060b9aeb |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-20T08:13:50Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-b1236e7b6f524d529e1334ef060b9aeb2022-12-21T19:47:11ZengEDP SciencesE3S Web of Conferences2267-12422018-01-01540002510.1051/e3sconf/20185400025e3sconf_swim2018_00025Freshening of salinized groundwater in Gdańsk Quaternary aquiferPrzewłócka Maria0Jaworska-Szulc Beata1Kozerski Bohdan2Pruszkowska-Caceres Małgorzata3Szymkiewicz Adam4Kwaterkiewicz Andrzej5Gdańsk University of Technology, Faculty of Civil and Environmental EngineeringGdańsk University of Technology, Faculty of Civil and Environmental Engineeringemeritus, formerly at the Gdańsk University of TechnologyGdańsk University of Technology, Faculty of Civil and Environmental EngineeringGdańsk University of Technology, Faculty of Civil and Environmental Engineeringemeritus, formerly at Polgeol companyThe 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.https://doi.org/10.1051/e3sconf/20185400025 |
| spellingShingle | Przewłócka Maria Jaworska-Szulc Beata Kozerski Bohdan Pruszkowska-Caceres Małgorzata Szymkiewicz Adam Kwaterkiewicz Andrzej Freshening of salinized groundwater in Gdańsk Quaternary aquifer E3S Web of Conferences |
| title | Freshening of salinized groundwater in Gdańsk Quaternary aquifer |
| title_full | Freshening of salinized groundwater in Gdańsk Quaternary aquifer |
| title_fullStr | Freshening of salinized groundwater in Gdańsk Quaternary aquifer |
| title_full_unstemmed | Freshening of salinized groundwater in Gdańsk Quaternary aquifer |
| title_short | Freshening of salinized groundwater in Gdańsk Quaternary aquifer |
| title_sort | freshening of salinized groundwater in gdansk quaternary aquifer |
| url | https://doi.org/10.1051/e3sconf/20185400025 |
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