The Difference of FINE BUBBLE AND COARSE BUBBLE DIFFUSERS

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Though fine bubble diffusers and coarse bubble diffusers both work through bubble aeration, it’s important to identify some distinguishing features of their design and function to determine which is appropriate.

Fine bubble membrane diffusers produce a smaller-diameter bubble for the aeration process. These bubbles typically measure 1 to 3 mm in diameter. This fine bubble aeration usually provides 2% or more Standard Oxygen Transfer Efficiency (SOTE) during aeration. Fine bubble diffusers come in a range of diameters themselves. We offer 7-, 9- and 12-inch fine bubble diffusers designed for performance and durability in municipal and industrial use.

Coarse air bubble diffusers, in contrast, produce a larger diameter of bubble to displace, churn and mix the wastewater effectively. Coarse bubble aeration typically provides 1% or less SOTE during aeration. At SSI, we offer a range of coarse bubble diffusers at a variety of price points to ensure our long-lasting products, engineered to the highest standards, can fill every type of need.

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