Nitrification and Denitrification processes for Biologic Treatment of Industrial Effluents

摘要

Nitrification process performance was evaluated using a three-phase flu- idized-bed bioreactor. A synthetic effluent was used for this experiment con- taining 180-230 mg/L of chemical oxygen demand (COD), 25-30 mg/L of N-NH;, 12 to 13 mg/L of total phosphorous, and micronutrients. The bioreactor used for denitrification behaved as completely mixed. The results indicate that the nitrification process was efficient, reaching efficiencies of about 98%. The best results related to the efficiency of the denitrification process were obtained when the processes were supplemented with the car- bon source. The results indicated an efficiency of 86-98% COD removal.