Methods and apparatus for wastewater treatment

A method for treating wastewater, the method comprising the steps of:

• providing a distribution conduit;
• creating an aperture in the distribution conduit, the aperture having an initial minimum inside diameter;
• providing a diffuser assembly, the diffuser assembly comprising a diffuser membrane in fluidic communication with a mating tube, the mating tube having an initial outside diameter at a location along its length greater than the initial minimum inside diameter of the aperture;
• and
• inserting the mating tube into the aperture until the location on the mating tube that, before insertion, had the initial outside diameter is encircled by the aperture where the aperture, before insertion, had the initial minimum inside diameter so as to form an airtight interference fit between the distribution conduit and the diffuser assembly.