Fine Bubble Diffuser – Disc Type The Disc Type Fine Bubble Diffuser is designed to generate uniform micro-bubbles for high oxygen transfer efficiency with low energy consumption. Fitted with EPDM or Silicon membranes, it ensures excellent durability, resistance to fouling, and consistent aeration performance in biological treatment systems. Available Sizes: * 9 inch * 12 inch Membrane Material: * EPDM * Silicon Uses / Applications: * Sewage Treatment Plants (STP) * Effluent Treatment Plants (ETP) * Aeration tanks * Biological treatment processes * Municipal & industrial wastewater treatment price mentioned here- 9“ EPDM