Full Scale SBR 공정에서 F/M비에 따른 처리특성 평가

In this study, the treatment of organic matters and nutrients like Nitrogen and Phosphorus with the different F/M ratios in sequencing batch reactors (SBR) was conducted. The following conclusions can be summarized from this study. The influent BOD concentration was varied 19.6 to 37.2 mg/L and the effluent was 3.0 to 9.8 mg/L. The variation of BOD removal efficiency during the experimental period was 71.0~88.4% and the average was 79.8%. Also the COD concentration was flowed into as 12.2~28.6 mg/L and the effluent concentration was varied 3.3 to 11.6 mg/L, and then the average COD removal efficiency was 57.4%(minimun 47.0% and maximum 78.6%). In the case of T-N, the influent concentration range was 7.53~12.30 mg/L and the effluent concentration was 3.56 to 7.34 mg/L (the average removal efficiency was 50.35%). Also the influent T-P concentration was varied from 0.93 to 1.54 mg/L and the effluent concentration was 0.42~0.89 mg/L. The removal efficiency was considerably varied from 25.0 to 68.1%, and the average removal efficiency was 45.48%. The reason was concluded that the sludge wasn't discharged for increasing MLSS concentration.