Pre-Treatment of Antibiotic Formulation Wastewater by O_3,O_3/H_2O_2,and O_3/UV Processes

摘要

The treatment of synthetically prepared antibiotic formulation wastewater with O_3,O_3/H_2O_2,and O_3/UV processes was examined.The efficiencies of the treatment processes were compared by means of COD,absorbance removals,and biodegradability enhancement.The efficiencies of O_3/pH=7,O_3/ pH=12,and O_3/H_2O_2(50 mM)processes were almost identical in terms of COD and UV254 removals.The BOD_3/COD ratio of formulation wastewater increased from 0.02 to 0.38 and 0.5 at the end of 1 hr of ozone treatment at pH=7 and pH=12,respectively.For the formulation wastewater subjected to O_3/UV process at pH=7,parallel to the UV254 removal efficiency,a 20% increase was obtained in the Oxygen Uptake Rate(OUR)value compared to that of mere ozonation.