EXPERIMENT FOR CHROMATICITY IMPROVEMENT OF SEWAGE-TREATED WATER WITH MICRO OZONE AND JET EQUIPMENT

Abstract

Water quality of sewage-treated water from Seibu sewage plant in Nagasaki city is always low value compared with the drainage regulations. However, it is necessary to consider about chromaticity and smell of sewage-treated water. In this study, experiments for chromaticity improvement of sewage treated water with micro ozone and jet equipment is done. As a result, chromaticity is reduced about 50 percent more effectively than conventional method, because ozone consumption rate goes up dramatically. And, it is clear that chromaticity is dominated by reaction rate equation. This developed method may reduce the initial and running costs for water quality improvement.