The air stones are widely used in beer brewing, aquaculture, fermentation, beverages, Wastewater Treatment, Ozone sterilization, etc. In bioreactors, optimal mass transfer of gases like oxygen or carbon dioxide is difficult to accomplish. Stainless steel aeration air stone greatly increases mass transfer rates. The introduction of gases into stirred or unstirred reactor vessels via millions of tiny bubbles increases the gas-to-liquid contact areas allowing for optimal mass transfer rates. Wastewater is pumped to the bioreactor, and the biomass working together with the oxygen fed by the diffusers in the bioreactor completes the biological decomposition. The aeration block consists of air diffusers stone used to create medium size bubbles that shake the membranes and scour the outside of the flat sheet membranes, removing accumulated debris. Features: > Good chemical stability: it has good chemical stability in air, water and steam. > Corrosion resistance: in many kinds of acid, alkali, salt aqueous solution also has enough stability, even in high or low temperature environment, still can maintain its corrosion resistance advantages. > Compliance with Food Safety Standards (FDA) > The disinfection machine has the advantages of simple structure, stable operation, uniform foaming