The paper describes a complex novel airlift plant for the simultaneous cleaning of water reservoir bottom sediments and water. The plant's design was tested in a model. Chemical analysis of the bottom sediments after experimental cleaning revealed a total oil content of 0.40–0.45 g kg−1, while the estimated initial oil content was around 16 g kg−1. This indicates a 35.5–40.0 times decrease in oil content.

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