The PVC fill media is used for the fixed film reactors. The typical processes fixed film digester and aerobic trickling filters or Bio-filters has been widely recognized the world over as a reliable method for the biological oxidation of organic wastes. Biological growth on the media surface of trickling filters converts dissolved organic waste material into by products like carbon dioxide, nitrates, water and biological solids which are later removed by clarification. Compared with other wastewater treatment processes, the advantage of the trickling filters, utilizing high efficiency plastic media, are numerous.

Bio-filters Needs only half the land area of activated sludge basins and only quarter the land area of an oxidation ditch. Uses inexpensive, self supporting, light weight modules that are easy to support, contain and install for construction