|
DOI : , Vol.20, No.3, 63 ~ 72, 2012
|
| Title |
| Evaluation of A2/O-BAF System on Nitrogen Removal |
| 신관우 Gwan Woo Shin , 신민수 Min Su Shin , 강민구 Min Koo Kang , 김금용 Keum Yong Kim , 류홍덕 Hong Duck Ryu , 이상일 Sang Ill Lee |
|
|
|
| Abstract |
| This study was initiated to evaluate a proposed A2/O-BAF system, in which a biological aerated filter (BAF) system was incorporated into a A2/O system, by comparing it with the conventional A2/O system. The evaluation was mainly focused on the nitrogen removal. Long term lab-scale experimental results presented that the NH4-N removal of the A2/Q-BAF system was 60.2 and 34.8% higher than that of the conventional A2/O system at the hydraulic retention time (HRT) of 6 and 4 h, respectively, and the similar tendency was observed in the TCQD and SCOD removal, These results would be attributable to the additional BAF installation in the conventional A2/O process, The untreated NH4-N in A2/O system were effectively removed in the BAF reactor. Specifically, it was revealed that the BAF reactor exerted much more ability in treating NH4-N at short HRT. Consequently, it is believed that the proposed A2/O-BAF system could be effectively applied to the wastewater treatment at short HRT and even in winter season for the removal of nitrogen. |
|
|
| Key Words |
| A2/Q process, Biological Aerated Filter, BAF, Nitrification, Nitrogen removal, Hydraulic retention time, HRT |
|
|
|
|
|
PDF