TSU biologists are rehabilitating the Maly Voivozh stream, a tributary of the Ukhta River belonging to the Pechora basin, under a partnership with Lukoil-Komi. New, environmentally friendly technologies helped to rehabilitate the stream’s ecosystem – and a living proof of that is fish population returning to the river after oil pollution has been removed.
As Danil Vorobiev says, previously oil pollution was mitigated by collecting oil from the water surface, and the riverbanks were cleaned with water under pressure, which leads to oil and soil mixing together.
TSU biologists go about it another way. To clean the stream they use an integrated mix of technologies. Aeroschup utilizes a flotation phenomenon to clear the water surface and Vibroschup clears mineral sediment on the bottom of the stream from oil.
To prevent oil from spreading down the stream, it was obstructed by an air-bubble wall across the river. Additionally, TSU biologists used three types of booms: classic, sorption, and bioactive.
While monitoring the cleared part of Maly Voivozh, biologists found plenty of minnows that were not seen here before the cleaning. After the stream was rehabilitated, these fish came back upstream. Biologists think that other species of fish will return soon too.
Students of the TSU Biological Institute master’s degree program Engineering and Ecological Exploration for the Oil and Gas Industry were involved in testing the technology and rehabilitation. Further work will involve students in the new online master’s program Bioremediation and Monitoring that opens in September 2021.