| Title |
Pollutant Removal and Characteristic of Floc by PACI Coagulation |
| Authors |
문병현(Byung Hyun Moon),김승현(Seung Hyun Kim),이향인(Hyang In Lee) |
| Abstract |
This study is to investigate the floc structure and removal of turbidity and organic matter by PACI coagulation. The turbidity removal by PACI coagulation was obtained at larger pH range than alum coagulation. And the removal of organic matter was obtained at smaller pH range than that of turbidity. The organic matter was removed by the adsorption of A1(OH)₃ precipitates. Floc structure was characterized by measuring fractal dimension and volume diameter using AIA and SALLS. Fractal dimension measured by AIA did not show the different characteristics of floc produced in sweep floc and charge neutralization region. Using SALLS, flocs in sweep floc region were found to be larger size and fractal dimension than flocs in charge neutralization region. As pollutant removal increased, larger fractal dimension and size of floc were measured. SALLS method was found to be more useful method to characterize flocs in coagulation than AIA method. |