The effect of organic Nitrogen Loading Rate (NLR) on the performance of Nitrification-Denitrification (ND) reactors on tofu industrial wastewater treatment

Abstract

This work aims to investigate how Nitrogen Organic Load Rate (NLR) affects nitrification-denitrification (ND) reactor performance when treating industrial wastewater containing tofu. This study uses bio-ball as a biofilter in the ND reactor, NLR variation to substrate concentration is carried out to determine the level of NH3-N removal efficiency in the nitrification-denitrification process so that nitrate production and nitrogen release are obtained optimally. The Effect of Nitrogen Organic Load Rate (NLR) on the Performance of Nitrification-Denitrification (ND) Reactors is determined by substrate equilibrium, which is the relationship between the rate of organic nitrogen entry and the capacity of microorganisms to process it, which is also greatly influenced by operational parameters, such as concentration, retention time and acidity degree. The rate of removal efficiency of NH3-N, nitrate in the ND biofilter reactor showed a significant increase in removal, at the NLR variation.