What type of air diffuser is most likely to clog?

Fine air diffusers are most likely to clog due to their design, which employs smaller openings to create finer bubbles. While this can enhance aeration efficiency and promote better mixing in wastewater treatment, the smaller size of the pores also makes them more susceptible to blockages. Particles in the wastewater, such as grit, sludge, and other organic matter, can easily clog these tiny openings.

In contrast, coarse and medium air diffusers, which utilize larger openings, have a greater tolerance for suspended solids, reducing the likelihood of clogging. Rotary air diffusers, while effective in delivering air, do not have the same pore size limitations as fine air diffusers and therefore are less prone to clogging. Overall, the design of fine air diffusers, with its emphasis on smaller bubble production to maximize oxygen transfer, inherently increases the risk of clogs, making them the answer to the question.