| Title |
Anoxic - Oxic - Anoxic - Stripper SBR process for biological nutrient removal |
| Authors |
이병헌(Byun Hun Lee),강성재(Seong Jae Kang),감성희(Seong Hee Kam),이동석(Dong Seuk Lee),유평종(Pyung Jong yoo) |
| Abstract |
This study was conducted to estimate the effects of real time control for AOAS SBR system. D0, pH and ORP were good indicators on nitrification and denitrification. Among these, ORP was the most effective and stable. To save the aeration energy and to promote the removal efficiency, the system was controlled on real time basis by using ΔORP as a control parameter. When the system was controlled on real-time basis, 31∼66% of energy was preserved. NH₄^+-N removal efficiency was 99%, but post denitrification rate was very poor because of deficiency in the carbon source. This process should select to add external carbon source or step-feeding method in order to improve the post-dinitrification reaction. |