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Biological Nitrogen and Phosphorus Removal in Oxidation Ditches and High Nitrate Recycle Systems

Published: August 01, 1990

As part of the Chesapeake Bay Agreement to which the State of Maryland is a signatory, several plants in Maryland will be required to reduce the nitrogen and phosphorus levels in their affluent. To examine the feasibility of biological nutrient removal (biological nitrogen and phosphorus removal), the Bowie WWTP, an oxidation ditch system, was selected because there were few full scale studies on biological nitrogen and phosphorus removal in oxidation ditches under temperate weather conditions.

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