Pilot Study of Three-Stage Catalytic Ozonation - Biological Activated Carbon for Drinking Water Advanced Treatment

Abstract

A novel three-stage catalytic ozonation-BAC process is proposed to treat highly polluted source water. A pilot study of 120 m3/d was performed in south China and lasted 9 months. The results showed that catalysts improved the THMsFP reduction efficiency by around 18% for BAC step and reduced the effluent bromate by 20%-77%; reduced NH4-N to below 1 mg/L; The effluent COD met the national standard under all circumstances.