Coarse Bubble Aeration

Maximum Mixing; Minimum Maintenance

Coarse bubble diffuser systems offer moderate oxygen transfer efficiency and low maintenance with maximum mixing.  EDI's full spectrum of coarse bubble diffuser platforms provide advances in mechanical reliability, application flexibility, and ease of installation and maintenance.

The primary advantage of this technology is its robust design and ability to mix. First, the circulation and turbulence created by the static tube ensures that the entire water column is mixed adequately and sludge accumulation is limited. Second, the fact that there are no moving parts in the water and the orifices are less prone to clogging makes this a very robust solution.



Otherwise known as large bubble diffusers, coarse bubble diffusers get their name from the type of bubble they produce. Coarse bubble diffused systems are composed of dozens to hundreds of coarse bubble diffusers, each attached to a PVC or stainless steel air supply line fixed to the bottom of the lagoon. The most common coarse bubble aerator for lagoons is what is known as a static tube. When large bubbles are released at the bottom of the tube, they create an effect whereby water is pulled from below the static tube and pushed towards the surface.




      • Economical capital cost and ease of installation.
      • Ideal for single-drop mixing applications
      • Mounts on any pip material (VC, ABS, CPVC, & SS)
      • Clog Resistant
      • Rugged Heavy-duty construction
      • 1-inch and 2 inch sizes available


      316 stainless steel construction
      High-temperature resistance—will not fail in high-temperature settings
      Clog resistant—designed for harsh environments
      Highest airflow capacity for efficiency
      Rugged heavy-duty construction for worry-free maintenance
      Excellent for mixing and for demanding applications



        Economical capital cost and ease of installation
        5” diameter for greater air distribution
        Mounts on any pipe material (PVC, ABS, CPVC, & SS)
        Premium quality EPDM membrane with check valve
        Rugged heavy-duty construction
        Pre-assembled in our facilities



            Non-clog design
            Engineered orifice design for maximized air distribution
            Turbulent mixing with contoured edge to fragment bubbles
            Internal diaphragm check valve to prevent entry of solids
            UV protection
            Low capital and maintenance cost



            Economical capital cost and ease of installation
            Mounts on any pipe material (PVC, ABS, CPVC, & SS)
            No-clog design
            Durable ABS body
            Greatest air capacity
            Integral check valve




    Contact Us
    5601 Paris Rd, Columbia, MO 65202

    Model of Coarse Bubble Aeration System In a Tank


    Winter Startup Inspection of Maxair Duplex Diffuser Assembly