Through our unparalleled industrial experience, the organization has been working to minimize the impact of hydropower on the environment. Specifically, ensuring safe fish passage has been one of our industry goals, leading the company to conduct analytical and physical modeling in our laboratories. Greaseless technologies have been commonly used to maintain water quality through our products.
Over the years, we have become a leader in providing aeration solutions that improve environmental compatibility through the increase of dissolved oxygen uptake downstream of hydropower facilities. These advancements address a common issue faced by hydropower producers: the need to improve water quality, specifically dissolved oxygen content, as water is discharged from existing and new hydroelectric equipment. The water in the lower reaches of many reservoirs is oxygen deficient and we provide a solution for this problem.
The Alden Turbine features a slower rotational speed and only three blades to reduce fish mortality due to blade strike. The blade shapes are specifically designed to improve the fish passage environment through the turbines by minimizing shear, pressure change rates and minimum pressures within the water passage. Depending on the species, full-scale fish survival rates are expected to range from 98% to 100%.