The pure titanium aeration head for sewage aeration tank is a micro filter element made of titanium powder as raw material, which is sieved, shaped and sintered. High filtration precision, small filtration resistance, high separation and purification efficiency, good air permeability, high mechanical strength, strong corrosion resistance, high material utilization rate, suitable for higher working temperature and thermal shock. Therefore, the titanium powder sintered filter material is a new type of material with broad development prospects due to its high-tech material composition and special molding process. The scope of application includes urban sewage, chemical industry, petrochemical industry, biological engineering, pharmaceutical industry, food industry, new expansion of large water plants and renovation of old aeration tanks. It is especially suitable for ozone aeration, high temperature and strong alkali aeration.