“…Nitrogen losses from aerated facilities have been observed frequently when suitable environmental conditions are in place (Applegate et al, 1980;Rittmann and Langeland, 1985;von Münch et al, 1996;Pochana and Keller, 1999;Daigger and Littleton, 2000;Kaempfer et al, 2000;Littleton et al, 2002;Littleton et al, 2003;Satoh et al, 2003;Daigger et al, 2007;Ju et al, 2007;Jimenez et al, 2010). This phenomenon has been referred to as simultaneous nitrification-denitrification (SND) because both biological reactions occur concurrently in the same reactor.…”