April2019
Replace Aging Brush Rotors with Disc Aerators
When brush rotors in oxidation ditch applications approach their useful life expectancy, a prudent upgrade option is to replace them with Evoqua’s OX™ Disc Aerator. Existing tanks can be used, and disc aerators allow for improved mixing efficiency, lower energy use, simpler operation, and less maintenance.
> Download the OX Disc Aerator brochure to learn more
Plants with multiple ditches can be upgraded for improved nutrient removal performance by converting to a true simultaneous nitrification/denitrification process that is enhanced by disc aeration.
> Learn more about NEW oxidation ditch components to provide even better performance with reduced maintenance!
At Evoqua, we have more than 40 years of expertise in both brush rotors and disc aerators. Upgrading your existing brush rotors or replacing with OX disc aerators can add years of life to your system while reducing operating costs.
NEW Video: “A Growing Story”
Take a peek inside the growing story of ProMinent USA. Learn the secret to why water & wastewater treatment and chemical feed customers enjoy our incredible level of commitment to service by honoring close relationships to customer and team.
The Metropolitan Water Reclamation District of Greater Chicago (MWRD) – of which the Terrence J. O’Brien Water Reclamation Plant (WRP) is part of – has made a number of upgrades to its treatment process in recent years. The addition of UV disinfection has been a critical part of these upgrades; it played a key role in improving water quality throughout the Chicago Area Waterway System (CAWS).
The Terrence J. O’Brien WRP (originally called North Side) was built to serve residents in communities north of downtown Chicago. In operation since 1928, it originally treated sewage for a population of 800,000 within a 78-square-mile area, but now both the service area and the population are nearly twice as large. The plant now serves over 1.3 million people in an area of 143 square miles and treats an average of 230 MGD of wastewater.
A Need For Innovation
The need for change was recognized by the MWRD Board of Commissioners in 2011 when new regulations required the facility to add a disinfection process to their wastewater treatment system. With the goal of re-classifying the CAWS to allow primary contact, they set out to research the most economical and optimal disinfection technology for the facility.
After investigating various disinfection approaches and technologies, officials determined that UV was the optimal solution for the plant and application.
Read the entire case study by clicker here.
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