Product Specification Sheet EDI ATLAS - DBBR™ Innovative Internal Decanted BioBalanced Reactor Technology for Advanced Treatment Lagoon Performance • Full nitrification, less than 2 mg/L even in cold climates • Ideally suited for facilities with multiple lagoon reactors • High BOD and TSS reduction; less than 30 mg/L • Install in new or existing lagoons • High process stability with low food to biomass ratio and long sludge age • High degree of system simplicity; minimum operator interface, selfregulating “equilibrium” solids management system • Decanted complete mix, and flow thru partial mix and settling reactors • Solids digestion and long term storage in partial mix aerated zone • Continuous inflow, intermittent supernatant withdrawal from complete mix reactor, and equalized final discharge • No return sludge pumps • Maximum biological solids recovery with settling and supernatant withdrawal from complete mix reactor • Waste sludge pumps optional • Ideal for small flows with high peaking factors • Low maintenance requirements • Minimum operating costs • Simple supernatant withdrawal components for fault free operations and low maintenance 1. 2. 3. 4. 5. 6. 7. Decanted Complete Mix Reactor Influent (continuous) BioCurtain™* Floating Lateral Aeration System Reactor in settle/supernatant withdrawal Supernatant withdrawal in operation Supernatant to downstream lagoons * BioCurtain for influent and effluent flow dispersion 4 2 4 1 5 7 6 3 w w w.w a s t e w a t e r. c o m Environmental Dynamics International 010112 aeration for life™

Product Specification Sheet The ATLAS - DBBR™ (Internal Decanted Bio Balanced Reactor) system integrates conventional decanted reactor technology with EDI’s “equilibrium” solids management program to improve the performance capabilities of lagoon-based wastewater treatment systems. Conventional lagoon treatment systems that are experiencing any of the following conditions will benefit from the application of the ATLAS DBBR system: • Hydraulic or organic overload • Inadequate BOD or TSS reduction • Poor ammonia conversion • High effluent total nitrogen • Reduced cold weather performance Biological...