In this study, the treatment of livestock wastewater using an aerobic granular sludge based sequencing batch reactor was investigated. The reactor operation was carried out by general injection and split injection methods. The average removal efficiency of organic matter after the adaptation period was 71.5 and 87.4%, respectively. Some untreated organic matter was attributed to recalcitrant organic matter. The average removal efficiency of total nitrogen was 65.6 and 88.4%, respectively. These results indicate that the denitrification reaction by split injection was carried out smoothly. As for the solids, the ratio of aerobic granular sludge/mixed liquor suspended solid can be determined as the main factor of the process operation, and the ratio increased gradually and finally reached 86.0%. Correspondingly, the sludge volume index (SVI) was also improved, reaching 54 mL/g at the end of operation, and it is believed that the application of a short settling time contributed to the improvement of settleability.

1. 서 론
2. 실험재료 및 방법
    2.1. 유입수 성상 및 실험재료
    2.2. 실험장치 및 운전조건
    2.3. 분석방법
3. 결과 및 고찰
    3.1. 유기물 제거효율
    3.2. 총질소 제거효율
    3.3. MLSS 및 AGS
    3.4. 슬러지 침전성 (SVI30)
4. 결 론
감사의 글

• 김현구(주식회사 블루뱅크) | Hyun-Gu Kim (BlueBank Co., Ltd., The 2nd engineering building, Myongji University, Yongin 17058, Korea)
• 안대희(주식회사 블루뱅크, 명지대학교 환경에너지공학과) | Dae-Hee Ahn (BlueBank Co., Ltd., The 2nd engineering building, Myongji University, Yongin 17058, Korea, Department of Environmental Engineering and Energy, Myongji University, Yongin 17058, Korea) Corresponding author