Abstract:Potassium permanganate (KMnO4) oxidation of trichloroethylene (TCE) in soil slurry system was investigated on effects of KMnO4 cocentration, pH, reaction time, initial TCE concentration and treatment times. Through the orthogonal test, the optimal operation condition of oxidation was determined to be KMnO4 concentration 125mg/L , pH value of 7.0, reaction time 30min, resulting in 100mg/kg TCE degradation reaching 93.7%. The removal rate of TCE was decreased with increased initial TCE concentration. Second treatments significantly enhanced contaminant removal, particularly in high-level TCE contaminated soils. Results from soil column experiments showed that TCE with initial concentration of 50mg/kg could be oxidized by KMnO4 at 88.1% removal rate after 12 days.