Fine Bubble Diffusers

• Produce excess amount of tiny bubbles
• Rise gradually from floor of waste water treatment plant
• Bubbles diameter between 0 to 3 millimetres
• Results in effective transfer of oxygen to the water hence energy savings
• Presence of sewage and oxygen allow bacteria to harvest enzymes used in breaking down of waste
• Finer bubbles allow greater aeration efficiency

Coarse Bubble Diffusers

• Bubble diameter in between 3 to 50 millimetres
• Risk of plugging reduced
• Better mixing performance compared to fine bubble diffusers
• Surfactants inhibit the transfer of oxygen to the water
• Coarse bubbles rise too quick
• Surfactants have not enough time to create the barrier