Engineering & Technical Specifications Peat Fiber Biofilter The Puraflo Process 1. Collection Sewage flows from the home or facility into a watertight septic tank. The solids settle and the liquid effluent flows by gravity through a commercial effluent filter to a pump basin/tank. 2. Treatment The liquid effluent is timed dosed at specific intervals into the Puraflo modules, where it is distributed evenly onto the biofibrous peat media. A combination of biological, chemical, and physical processes treat the effluent as it filters through the peat fiber media. 3. Dispersal or Water Reuse Puraflo Peat Fiber Biofilter Module ______________________ Made from UV resistant HDPE _________________________ Media lasts ~15 years _________________________ High lignin Irish peat fiber _________________________ Lid design provides full access _________________________ Multiple lid colors available _________________________ Treated effluent emerges from the Puraflo modules and disperses either into a gravel pad directly below the modules or is collected for dispersal by other methods, including gravel trenches, LPP, drip irrigation or other dispersal methods. Effluent is suitable for reuse. Chemical or UV disinfection may be required. Puraflo Effluent Quality ________________________________ Parameters Effluent ________________________________________ BOD5 (mg/l) <10 _______________________________________ TSS (mg/l) <10 _______________________________________ NH3-N (mg/l) <5 _______________________________________ Fecal Coliform (per 100ml) <1,000 to <10,000 _______________________________________ System Design Considerations _______________________________________________________________________ Maximum design organic loading per module 0.3755 lbs/d ______________________________________________________________________________ Maximum design hydraulic loading per module 150 gpd (residential) 120 gpd (commercial) 240-300 gpd (polishing or recirculation) ______________________________________________________________________________ Module weight 1800 lbs ________________________________________________________________

Technical Drawings Side view Sealed Modules are without weep-holes Dispersal Options In-Ground Pad – Type A Landscape module area area upslope and downslope downslope as needed Gravel Trench Bundled Polystyrene Second Pump Tank – Type B Only modules bearing the NSF® logo and designated P150N* XX are certified to NSF/ANSI Standard 40