The oxygen grid is made of high-strength HDPE ventilation frame, oxygen tube and stainless steel clamp, making the product durable. Each aeration grid used in the aeration tank can adjust the ventilation rate from 0 to 300 cubic meters per hour according to actual needs. The design structure of the aeration grid makes the installation of the aeration system very simple. Combined with a Roots blower and a simple piping system, an efficient aeration system can be formed. It is widely used in large aeration tanks of municipal sewage plants; factory wastewater treatment systems; urban river sewage treatment; landscape water treatment and other fields.