Advanced oxidation processes for the treatment of mineral oil-contaminatedwastewaters

Advanced oxidation processes (O-3/UV and O-3/H2O2) have been adopted for th e treatment of mineral oil-contaminated wastewater. Air the experimental ru ns have been performed in a 0.2-1 semicontinuous reactor (equipped with a n ominal power of 17 W UV lamp for illuminated experiments). The results of t his investigation show that the system O-3/UV is capable of achieving high levels of purity ranging from 80 to 90% abatement of the inlet COD with rea ction times not longer than 30 min. Modeling of the reacting system has bee n also attempted to evaluate the rate parameters involved in some reaction steps. A preliminary estimation of the costs of adopted AOP techniques is p rovided. (C) 1999 Elsevier Science Ltd. All rights reserved.