ATUs - Aeration treatment system

The EnviroServer ES hybrid, fixed-film, suspended-growth, extended-aeration wastewater treatment system from MicroSepTec has an adjustable two-stage biological process to optimize denitrification. A single five-compartment fiberglass tank incorporates a primary settling/septic chamber, two aerobic chambers, a final settling chamber and an effluent chamber to house optional disinfection units and/or effluent pumps. The single-tank design requires only one excavation so it can be installed on small or sloped lots. The heavy-duty tank is light to transport and can be maneuvered with typical installation equipment. For ease of maintenance, components are accessible at grade. It is available in three residential sizes: ES6 (600 gpd), ES12 (1,200 gpd) and ES25 (2,500 gpd). 877/473-7842; www.microseptec.com.