Product Specification Sheet EDI ATLAS-EC™ (External Clarifier System) Lagoon-Based Activated Sludge System for Advanced Treatment Performance • Full nitrification; less than 1.5 mg/L even in cold climates • External mechanical clarifier for optimum solids separation • Maximum BOD and TSS control; less than 15 mg/L • Mechanical rake system for positive solids recovery and scum control • Complete mix basin with continuous or sequential BioMizer™ designs available. • High level of (F/M) process control with RAS and WAS pumping • Low food to biomass (F/M) ratio for process stability and minimum biological solids production • Upgrade existing or new lagoons 1. Complete Mix Reactor 2. Floating Lateral Aeration System 3. External Mechanical Clarifier 2 1 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 EDI ATLAS-EC™ (External Clarifier) system uses conventional clarification technology to improve the performance capabilities of lagoon-based wastewater treatment systems. Conventional lagoon treatment systems that are experiencing any of the following conditions can benefit from the ATLAS-EC system: • Hydraulic or organic overload • Inadequate BOD or TSS reduction • Poor ammonia conversion • High effluent total nitrogen • Reduced cold weather performance Biological processes are limited in their ability to treat wastewater by the mass of microorganisms that can...