The EnviroFin passive onsite wastewater treatment and dispersal system from Presby Environmental is designed to have a small footprint and ship easily, while maintaining and exceeding NSF/ANSI Standard 40 treatment. Effluent leaves the septic tank and enters the fin distribution unit, where it settles and breaks down suspended solids. Skimmer tabs located at the perforations prevent grease and suspended solids from leaving. Effluent is distributed to the eight treatment fins, which are filled with coarse green plastic fibers, filtering and digesting more suspended solids while creating a large bacteria treatment area. Each treatment fin has a perforated pipe functioning as an air duct across the top, providing oxygen to promote bacterial growth. 800/473-5298; www.presbyenvironmental.com.
 


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