Figure 7. Nitrate nitrogen concentrations for final experiment. Total aeration time was about 18 hours; total anaerobic stirring duration was about 11 hours

From

Removal of Nitrogen by Bioreactor Method

Krishna Kumar, Omprakash Sahu

Journal of Environment Pollution and Human Health. 2014, 2(1), 16-22 doi:10.12691/jephh-2-1-4