| Title |
A Study on the Field Application of Intermittently Aerated Activated Sludge Process for Water Reuse System |
| Authors |
서인석(In Seok Seo),김병군(Byung Goon Kim),박승국(Seung Kook Park),권선웅(Sun Woong Kwon) |
| Abstract |
Intermittently aerated activated sludge process was applied as a water reuse process of 70 ㎥ /day for the upgrade of organic, nitrogen and phosphorus removal efficiency and clarifier performance. After application of the intermittently aeration, removal efficiency of BOD, SS, T-N and T-P were achieved 95%, 90%, 80% and 60%, respectively. Removal efficiencies in intermittently aerated process were considerably increased, comparing to those of continuously aerated activated sludge process. Also sludge rising problem in clarifier was improved. Average concentration of supplied reusing water were BOD 5 ㎎/L, turbidity 4 NTU and after chlorination, residual chlorine 0.4 ㎎/L, coliform 0 MPN/100mL. Intermittently aerated activated sludge process could be one of the best alternative process for the retrofit of conventional activated sludge process for the removal of nutrient in water reuse system. |