[Degradation kinetics of ozone oxidation on landfill leachate rejected by RO treatment]

This study kinetically investigated landfill leachate rejected by reverse osmosis (RO) oxidation degradation by ozonation. Initial pH, ozone dosage, temperature and initial COD had significant impact on the oxidation rate. The results demonstrated that for the removal efficiencies of COD 67.6% under the conditions of 8.0 pH, 5.02 g/h ozone dosage, 303K temperature. The empirical kinetic equation of ozonation degradation for landfill leachate under the conditions of 2.0-8.0 pH, 2.53-6.90 g/h ozone dosage, 934-4 037 mg/L initial COD, 283-323 K temperature fitted well with the experimental data(R2 0.969-0.996), with low activation energy E(a) = 1.43 x1094) J x mol(-1).