Diffused Aeration is defined as the supply of air at bottom of the aeration tank for transfer of oxygen into the sewage or industrial wastewater. Based on Bubble formation • Fine bubble Diffused Aeration • Coarse bubble Diffused Aeration Based on Fixing arrangement • Retrievable • fixed Based on membrane MOC: EPDM and Silicon Features: • Delivers high Oxygen Transfer & aeration Efficiencies • Suitable for high Oxygen Demands • Easily adaptable to existing setups or for plant upgrades Type of Diffuser • Disc type • Tubular type