Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake?
The research was carried out on Karczemne Lake, a water reservoir located in Kartuzy (northern Poland, Pomeranian Lake District). Monitoring of the water and bottom sediment of Karczemne Lake showed a very high level of contamination of the reservoir by a long-term inflow of untreated municipal sewa...
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| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/11/3698 |
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| author | Jolanta Grochowska Renata Augustyniak Michał Łopata Renata Tandyrak |
| author_facet | Jolanta Grochowska Renata Augustyniak Michał Łopata Renata Tandyrak |
| author_sort | Jolanta Grochowska |
| collection | DOAJ |
| description | The research was carried out on Karczemne Lake, a water reservoir located in Kartuzy (northern Poland, Pomeranian Lake District). Monitoring of the water and bottom sediment of Karczemne Lake showed a very high level of contamination of the reservoir by a long-term inflow of untreated municipal sewage. The trophic status index of total phosphorus (TP) was unusually high at 101, and the TP content in the bottom sediments—31 mg g<sup>−1</sup> (dry weight)—was the highest value recorded worldwide in a lake. Based on the monitoring results, to achieve constant improvement of the water quality, we recommend a completely new, safe and economically justified method of bottom sediment removal and management. A very important aspect of this method is the prevention of uncontrolled sewage discharge back into the lake basin. Removed sediment with interstitial water will be pumped through a pipeline and transported to a sewage treatment plant. In the sediment mining field in which the sludge will be removed, the first phase of phosphorus inactivation will be carried out to chemically precipitate pollutants distributed in the water column as a result of sediment resuspension. After the deepening of the entire lake basin, the method of phosphorus inactivation will be carried out on the entire surface of the lake as the next stage of restoration. A supporting activity will be biomanipulation. Before the restoration is started, the municipal sewerage system will be modernized. |
| first_indexed | 2024-03-10T19:34:13Z |
| format | Article |
| id | doaj.art-f2f0ea607260476f8d403fd94c737132 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T19:34:13Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f2f0ea607260476f8d403fd94c7371322023-11-20T01:52:04ZengMDPI AGApplied Sciences2076-34172020-05-011011369810.3390/app10113698Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake?Jolanta Grochowska0Renata Augustyniak1Michał Łopata2Renata Tandyrak3Department of Water Protection Engineering and Environmental Microbiology, Institute of Engineering and Environmental Protection, University of Warmia and Mazury, St. Prawocheńskiego 1, 10-720 Olsztyn, PolandDepartment of Water Protection Engineering and Environmental Microbiology, Institute of Engineering and Environmental Protection, University of Warmia and Mazury, St. Prawocheńskiego 1, 10-720 Olsztyn, PolandDepartment of Water Protection Engineering and Environmental Microbiology, Institute of Engineering and Environmental Protection, University of Warmia and Mazury, St. Prawocheńskiego 1, 10-720 Olsztyn, PolandDepartment of Water Protection Engineering and Environmental Microbiology, Institute of Engineering and Environmental Protection, University of Warmia and Mazury, St. Prawocheńskiego 1, 10-720 Olsztyn, PolandThe research was carried out on Karczemne Lake, a water reservoir located in Kartuzy (northern Poland, Pomeranian Lake District). Monitoring of the water and bottom sediment of Karczemne Lake showed a very high level of contamination of the reservoir by a long-term inflow of untreated municipal sewage. The trophic status index of total phosphorus (TP) was unusually high at 101, and the TP content in the bottom sediments—31 mg g<sup>−1</sup> (dry weight)—was the highest value recorded worldwide in a lake. Based on the monitoring results, to achieve constant improvement of the water quality, we recommend a completely new, safe and economically justified method of bottom sediment removal and management. A very important aspect of this method is the prevention of uncontrolled sewage discharge back into the lake basin. Removed sediment with interstitial water will be pumped through a pipeline and transported to a sewage treatment plant. In the sediment mining field in which the sludge will be removed, the first phase of phosphorus inactivation will be carried out to chemically precipitate pollutants distributed in the water column as a result of sediment resuspension. After the deepening of the entire lake basin, the method of phosphorus inactivation will be carried out on the entire surface of the lake as the next stage of restoration. A supporting activity will be biomanipulation. Before the restoration is started, the municipal sewerage system will be modernized.https://www.mdpi.com/2076-3417/10/11/3698urban lakerestorationdredgingphosphorus inactivationbiomanipulation |
| spellingShingle | Jolanta Grochowska Renata Augustyniak Michał Łopata Renata Tandyrak Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake? Applied Sciences urban lake restoration dredging phosphorus inactivation biomanipulation |
| title | Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake? |
| title_full | Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake? |
| title_fullStr | Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake? |
| title_full_unstemmed | Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake? |
| title_short | Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake? |
| title_sort | is it possible to restore a heavily polluted shallow urban lake |
| topic | urban lake restoration dredging phosphorus inactivation biomanipulation |
| url | https://www.mdpi.com/2076-3417/10/11/3698 |
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