Patent ID: 6106718
Filing Date: 2000-08-22
Classification: C02F,C12Q,G01N,Y10S,Y10T

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