Studies on the aerobic denitrification process for treating ammonia nitrogen rich leachate.

The results of tests show that TN removal rate higher than 10% could be reached in the aerobic denitrification process of common activated sludge technique for the ammonia nitrogen rich leachate. Nitrification rate decreases with decrease of the DO, and denitrification rate increases with the decrease of the DO. According to the kinetic analysis of nitrification anddenitrification, there is a point at which nitrification rate is equal to denitrification rate of 4.7mg/(Lh) when DO is about0.14mg/L, The ralated kinetics parameters are kN =0.37mg/L for nitrification and kD=0.48mg/L for denitrification.