Advanced Treatment UnitsAnua Puraflo Dn
The Puraflo Dn peat fiber biofilter system from Anua provides enhanced denitrification below 20 mg/L through recirculating 50% of the treated effluent back to the front end of the septic tank. Flow proportioning is accomplished through simple adaptations to external plumbing, allowing for a single-pump system with no aerators. In recirculation mode, each module is rated for domestic strength at 240-gpd total hydraulic loading equivalent and 120-gpd forward flow. It can be designed and installed as a combined treatment and effluent dispersal system. Treated effluent exits the modules via weep holes around the perimeter at the



















