Biological nutrient removal from agroindustrial wastewater using a two reactor system

Abstract

Agroindustrial wastewater is rich in oganic material, especially organic carbon and nutrient. In this work a two reactors syste, consinsts of anoxic and erobic reactor was operated with different recycle and C/N ratio. Experimentation using molasses-based artificial wastewater containing 114 mg/L of NH3-N, 10 mg/L of NO3-N, 25 mg/L of No2-N, and 1300 mg/L COD, which was fed directly into the anoxic reactor showed increaing of DO concentration in the anoxic reactor from 0,13 mg/L to 032 mg/L which increasing recycle ration from 100% to 300%.