Raschig Rings For Water Aeration

Raschig rings for water aeration can help prevent the development of harmful algal blooms, according to this article from Kasco Marine. Aeration increases surface area available for gas exchange and can reduce oxygen requirements; however, depending on how and where an aerator is installed this system may or may not work as effectively.

Raschig rings are commonly employed in chemical separation and mass transfer processes like fractional distillation. Their large surface area for liquid-vapor interaction outshines other packing types and outperforms fractal patterns; plus they’re relatively inexpensive and customizable with different materials and wall thicknesses to meet various applications.

Rings also boast the added advantage of being resistant to radioactive leakage than other packing materials, especially if made of materials with high radioactivity levels or chemical sensitivities such as glass. Plus, they can be fitted with leak detection devices to warn operators when concentrations of radioactive material exceed safe limits.

Raschig rings are tubular pieces of roughly equal length and diameter that serve as tower packing in chemical processing and mass transfer applications, including fractional distillation. Also referred to as adsorption columns or random packing, Raschig rings were introduced by Friedrich Raschig in 1907 with Pall rings being an iteration on these early early designs.