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Lake Długie in Olsztyn, Poland, received untreated sewage for over 20 years from a housing estate which probably caused its complete degradation. The lake was regarded in the 1970s as one of the most polluted in Poland; its chemical composition was similar to that of diluted sewage. After the sewage diversion, the amount of organic compounds and nutrients in the water diminished, although the aquatic...
Attempts at lake restoration by artificial aeration with the use of wind energy were made on the heavily eutrophic Lake Starodworskie. The lake is small - only 7 ha surface area but deep - 23 m. Artificial aeration was performed by destratification method. Compressed air, produced with the help of a wind turbine was subsequently delivered to the deepest site in the lake. As show the study results...
Comparison was made of effective and estimated loads of phosphorus and nitrogen coming from the catchment area to Lake Wadąg. It was concluded that the effective loads of phosphorus based on direct measurements were much similar to values obtained from the estimation method covering only diffused pollution sources. This seems to point out that external loads to lakes calculated as unit run-off of...
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