| Title |
Effects of feeding time in advanced biological wastewater treatment on the fractal dimension and size distribution of flocs |
| Authors |
문병현 ( Byung Hyun Moon ) ; 김상수 ( Sang Soo Kim ) ; 이강춘 ( Gang Choon Lee ) |
| Abstract |
When wastewater treatment is performed with the advanced biological wastewater process, the quality of effluent depended on the floc characteristics is affected by the fill time for influent. The aim of this study was to investigate how different fill time for sequence batch reactors (SBR) influences pollutants removal and characteristics of biological flocs. The biological flocs were characterized by size distribution and fractal dimension using Small Angle Laser Light Scattering (SALLS) method. SBR with short fill time shown higher removal efficiencies of COD, BOD, T-N and T-P. Larger floc size and fractal dimension were produced at SBR with short fill time. The short fill time produced the sludge with better settling properties and thickening, Alternating anaerobic and aerobic condition also affected the floc size. The floc size decreased under anaerobic phase, and floc size increased under aerobic phase. However, the fill time condition more affected the fractal dimension of floc. |