Influence of Liquid Height to the Oxidation Process of Landfill Leachate by Using Ozone

摘要

The influence of liquid height on chemical oxygen demand (COD) of leachate was investigated. When 400mL leachate was filled in a thick tube reactor (TTR) with height of 0.063m, COD removal efficiency was 45.69%, while ozone dosage was 3.35mg(O3)/mg(COD). As leachate was filled in a slender tube reactor (STR) with a height of 0.815m, removal efficiency was 51.81%, and ozone dosage was 3.12mg(O3)/mg(COD). The results indicated that COD removal efficiency increased with the height of liquid. It is believed that the liquid height increased hydraulic pressure and resulted in COD removal efficiency.