![Two Birds, One Stone](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Ftpo_mebane_drago_0015.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=c9167320703d09f2c086fc699501b7dc)
Faced with a future mandate to limit phosphorus and nitrogen discharged to Jordan Lake, the City of Mebane (N.C.) expected to upgrade its activated sludge plant to a biological nutrient removal system.
Interestingly though, effluent ammonia levels were below 1.0 mg/L even...