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' NSA <br /> MicroSepTec <br /> What Treatment Methods Works -- What Does NotT <br /> No Nitrogen Removal <br /> • Traditional Septic Tank with Leach Field <br /> • Conventional Aerobic Units ' <br /> a <br /> Moderate Nitrogen Removal <br /> Approximate N- <br /> Removal Efficiencies <br /> Aerobic Units with Pulse Aeration' - 25-35% <br /> • Septic Tank with Intern-rittent/Recirculating <br /> Sand Filters' - 30-50% <br /> Advanced Nitrogen Removal <br /> • Septic Tank with Recirculating Trickling ' <br /> filter' - 60-70% <br /> • Other Advanced Aerobic/Anaerobic <br /> Treatment Units - above 70% <br /> Recirculating Sand Filter with Anaerobic <br /> 0 <br /> Filter & Carbon Source' - up to 90 0 _ <br /> MicroSepTec's EnviroServer - 80-90% <br /> 1 Numbers from: Stewart Oakley, "Onsite Wastewater & Nitrogen Removal", California State University, Chico, Califomia <br />