EDI ATLAS-IS?
2Pages

Product Specification Sheet Product Specification Sheet The patented EDI ATLAS-IS™ (Internal Separator) system uses an innovative biological solids separator module and “equilibrium” solids management design to provide advanced treatment in a lagoonbased wastewater treatment system. Conventional lagoon treatment systems that are experiencing any of the following conditions will benefit from the application of the ATLAS-IS 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 be retained and suspended in the biological reactor. The ATLAS-IS system effectively increases the inventory of microorganisms in the system by operating the lagoon in a complete mix, activated sludge mode with an innovative internal separator for solids retention. The management of biomass allows for a shorter hydraulic residence time, longer sludge age and low food to microorganism ratio for high process stability and maximum cold weather performance. The synthesis of organic materials in the wastewater results in a net production of biological solids. A long sludge age is used to stabilize the mass of biological solids that are produced and minimize downstream solids management requirements. Biological solids that are not retained by the internal separators are carried to downstream a partial mix aerated zone for continued stabilization and storage. Finally, a quiescent zone is provided for effluent polishing prior to discharge. EDI ATLAS-IS™ (Internal Separator) Innovative Biological Solids Separation Technology for Advanced Treatment Lagoon Performance The ATLAS-IS system is provided with aeration to address the oxygen demand and mixing requirements of the process. When combined with an EDI high efficiency FlexAir® diffused aeration system and patented BioMizer™ mixing technology, the ATLAS-IS system is one of the more energy efficient, wastewater treatment processes available in the industry. • Full nitrification; less than 2 mg/L even in cold climates • Install in new lagoons or convert existing lagoons with no interruption in service • High BOD and TSS reduction; less than 30 mg/L • Simple system; minimum operator interface, self-regulating “equilibrium” solids management design • Complete mix basin with continuous or sequential BioMizer™ designs available. • High process stability with low f/m ratio and long sludge age The ALTAS-IS system can also be effective in reducing total nitrogen. By operating the complete mix zone at a controlled low dissolved oxygen concentration, co-current nitrification / denitrification is achieved. Operating under this optimized condition provides additional benefits including alkalinity recovery and reduced energy consumption. The system may also be configured with anaerobic or anoxic biological selectors for added process performance and control. 5601 Paris Road • Columbia, MO 65202 USA +1 877.EDI.AIR8 (334.2478) +1 573.474.9456 • Low operating costs • Efficient biological solids retention and biomass control with internal separation modules • Low maintenance requirements 2 4 1 The ATLAS-IS system is one of many efficient, low cost, lagoon-based technologies available from EDI. For detailed information on how to improve the performance of lagoon-based systems, contact EDI or a local EDI representative. For Parts Information: parts@wastewater.com www.diffuserexpress.com • No return or waste sludge pumps • Continuous inflow and discharge 3 Environmental Dynamics International • Economical solids digestion and long term storage in partial mix aeration zone For System Information: systems@wastewater.com www.wastewater.com 1. 2. 3. 4. Complete Mix Reactor Floating Lateral Aeration System Internal Separator Modules FlexAir® Magnum High Efficiency Diffusers w w w.w a s t e w a t e r. c o m Environmental Dynamics International 010112 aeration for life™

EDI ATLAS-IS™ (Core System) COMPLETE MIX ZONE SOLIDS SEPARATION ZONE • Complete mix zone with hydraulic baffle for solids control • BOD & ammonia removal and partial denitrification • SRT adjustable to match process objectives • High efficiency diffused aeration • Optional BioMizer™ Mixing System for maximum operational efficiency • Internal separation module • Self balancing equilibrium solids management • Automatic solids recovery and solids wasting to partial mix reactor • Sized to match flow requirements The ATLAS-IS system is ideally suited for new or existing lagoons. The system uses...