Enhanced denitrification process by monitoring and controlling carbonaceous nutrient addition

摘要

A method of determining denitrification time for at least a portion of wastewater in a wastewater treatment process including isolating a wastewater sample from the wastewater in the wastewater treatment process; detecting changes in fluorescence emitted by NADH from microorganisms contained within the sample; detecting changes in pH of the sample; analyzing the changes in NADH and pH and establishing that the sample is denitrified at a point where NADH shifts from a steady state or a decreasing state to an increasing state and, substantially simultaneously, the pH shifts from a steady state or an increasing state to a decreasing state; and calculating elapsed time between when the sample was taken and when the sample was denitrified to determine the denitrification time for the portion of the wastewater treatment process.