In a biological film module for wastewater treatment system, a frame for supporting porous biological-growth support media is provided with at least one pontoon float. Also disposed on the frame is an aerator in the form of a removable diffused aeration grid including a plurality of individual diffusers disposed in a rectangular planar array.
McAllen, TexasPhilosophy Instructor at South Texas College Past: Graduate Student Teacher--Philosophy at University of Oklahoma, Child Welfare Worker at...