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June 9, 2013: Centennial of Activated Sludge; 1846: Birth of Frederic W. Stevens

This Day in Water History

Activated Sludge Process Activated Sludge Process

June 9, 2013: Celebration of Centennial of Activated Sludge Process. “On June 9-11, the Water Environment Federation convened the forum, “Activated Sludge on its 100th Birthday: Challenges and Opportunities.” The event was held at Stonehill College in Easton, Massachusetts to coincide with the 100th anniversary of the first patent of the activated sludge process near Boston. The Activated Sludge process is still the heart of modern wastewater treatment systems around the globe and was a sea-change in the burgeoning field of wastewater treatment, permitting wastewater treatment to occur in a much smaller footprint, saving space and treatment time while protecting public and environmental health. In the past 100 years, the process has been updated, modified, and augmented, to improve treatment, remove nutrients, and do so more efficiently. However, more stringent demands and resources challenges are necessitating another look at the process that has been the backbone…

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