Coarse Bubble Air Diffuser is devices used in wastewater treatment systems to introduce larger bubbles of air into liquid, typically in aeration tanks. They are characterized by larger bubble size compared to fine bubble diffusers, and they are commonly used in specific applications where the advantages of larger bubbles are beneficial. These diffusers play a role in the aeration process, providing oxygen to facilitate the biological treatment of wastewater. They are commonly used in industrial wastewater treatment applications where the presence of solids or the need for mixing is a consideration. Coarse Bubble Air Diffuser is known for their ability to cover larger surface areas with aeration, making them suitable for applications with varying water depths.