| Title |
Effect of Anaerobic Reactor Volume Fraction ( ARVF ) on nutrients removal in dynamic state activated sludge process |
| Authors |
박승국(Seung Kook Park),서인석(In Seok Seo),연동석(Dong Seok Yeon),이상일(Sang Ill Lee) |
| Abstract |
Anaerobic reactor in BNR(Biological Nutrients Removal) process is very important for phosphorus removal. In this research, the effect of ARV(Anaerobic Reactor Volume) and biomass concentration on biological nutrients removal in dynamic state activated sludge processes was evaluated. IAAS(Intermittently Aerated Activated Sludge) and DynaFlow Dynamic Flow Intermittently Aerated Activated Sludge) process were operated as a dynamic state activated sludge process. ARV(Anaerobic Reactor Volume) and biomass concentration have not an great effect on total nitrogen and organic removal efficiencies, whereas, have a great effect on total phosphorus removal efficiencies, especially, at low biomass concentration. When ARVF(Anaerobic Reactor Volume Fraction) were 0, 7, 13% at SRT 5 day, phosphorus removal efficiency were <30, 64, 84%, respectively. At SRT 10 and 12 days, difference of phosphorus removal efficiency on ARVF were only 7%. As bulking was occurred, phosphorus removal were deteriorated, whereas organic and nitrogen removals were not. When biomass concentration was over 5,000 ㎎/liter, the effect of anaerobic reactor on phosphorus removal was not important in both systems. |