Nutrients dosage control in biological treatment of whitewater reuse

Abstract

Nutrients, like nitrogen and phosphorous, are deficient in whitewater compared to what is required in order to fully degrade. So N and P are added to the whitewater biological treatment system to achieve efficient reduction, at the same time, we must ensure the effluent of the treatment be has a low nutrients concentration. Nutrients dosage control is a main problem in the whitewater treatment of whitewater reuse. We often use the strategy of maintaining BOD:N:P ration in a certain degree with the influent flow. By establish the mathematical model, we can look into the process of the biological treatment system, so as to adjust the BOD:N:P ration. © 2011 Springer-Verlag Berlin Heidelberg.