A₂O 공정을 이용한 저 C/N 비 하수의 질소·인 제거에 관한 연구 = Nitrogen & Phosphorous Removal of Municipal Wastewater with Low C/N Ratio by A₂O Process

다국어 초록 (Multilingual Abstract)

In this study, a pilot-scale A₂O process was applied to remove organics, suspended solids, nitrogen from municipal wastewater with low C/N ratio, and to investigate the treatment efficiency of pilot plant as well as the nitrogen removal characteristics of pilot plant. As a result of studying BOD_(5) and COD removal efficiencies were increase for HRT increase and effluent concentration were to decrease. T-N removal efficiency and concentration of effluent were shown as 60 ~ 80% and below 15mg/L. In aerobic basin, removal efficiency of NH₄-N was shown over 97% with NH₄-N volume load 0.l6kgNH₄-N /㎡·d and in anoxic basin, denitrification efficiency was indicated over 80% with return sludge rate 0.5Q and internal recirculation rate 2.5Q. Removal efficiency and effluent concentration of phosphorus mere shown over 80% and below 2mg/L with return sludge rate 0.5Q.