What's Happening?
Norwegian hydropower plants are causing significant harm to fish and bottom-dwelling animals due to water oversaturation with air, leading to conditions similar to decompression sickness in humans. This issue is exacerbated by increasingly severe weather
patterns and flooding. Researchers from NTNU, led by Professor Ole Gunnar Dahlhaug and postdoctoral fellow Wolf Ludwig Kuhn, are developing a new technology using ultrasound to mitigate this problem. The technology aims to reduce gas saturation in river water, potentially preventing the harmful effects on aquatic life. The research is part of the DeGas project, which has been ongoing for five years, and involves collaboration with biologists from the Norwegian Institute for Nature Research and SINTEF researchers.
Why It's Important?
The development of this technology is crucial as it addresses a significant environmental issue associated with hydropower, which is often considered a clean energy source. The problem of gas supersaturation affects a large number of Norway's 1,800 hydropower plants, with nearly 30% classified as high-risk. The new technology could help preserve aquatic ecosystems and maintain biodiversity in affected areas. Moreover, it highlights the need for regulatory measures to ensure that hydropower remains a sustainable energy source. The potential for this technology to be applied globally could also influence international hydropower practices, especially in regions planning new dams.
What's Next?
Further testing of the ultrasound technology is required before it can be commercialized. The researchers emphasize the need for regulatory bodies to mandate monitoring and address the issue of gas supersaturation. This could lead to widespread adoption of the technology, ensuring that hydropower plants operate sustainably. The researchers also call for increased awareness and adaptation of power plants during the planning phase to prevent similar issues in new projects worldwide.
