The activity of anaerobic ammonium oxidation (ANAMMOX) immobilized in synthetic media (Poly Ethylene Glycol, PEG) and granular form was evaluated comparatively to investigate the effect of influent nitrogen concentration and exposure of oxygen. In ANAMMOX granule reactor, when concentration of influent total nitrogen increased to 500mg/L, removal efficiency of ammonium, nitrite and nitrate were shown to 90.5±6.5, 96.6±4.9, and 93.2±6.1%, respectively. In the case of the PEG gel, it showed lower nitrogen removal performance, resulting in that the removal efficiency of ammonium, nitrite and nitrate were shown to 83.3±13.0, 96.4±6.1, and 90.3±7.5%, respectively. In second step, when exposed to oxygen, the nitrogen removal performance in the ANAMMOX granule reactor also remained stable, but the activity of PEG gel ANAMMOX was found to be inhibited. Consequently, the PEG gel ANAMMOX was a higher sensitivity than that of granular ANAMMOX with two variables applied in this study.

1. 서 론
2. 실험방법
    2.1 유입 합성폐수의 특성
    2.2 반응조 구성
    2.3 반응조 운전 조건
    2.4 물질 분석방법
3. 결 과
    3.1 기질 농도 변화에 따른 질소 제거능 평가
    3.2 산소 노출에 따른 질소 제거능 평가
    3.3 Granular ANAMMOX와 PEG gel ANAMMOX 비교 평가
4. 결 론
사 사
References

• 김지영(경상북도 보건환경연구원 대기보전과) | Jiyoung Kim (Department of Air Conservation, Gyeongsangbuk-do Government Public Institute of Health & Environment)
• 윤원상(영남대학교 환경공학과) | Wonsang Yun (Environmental Engineering, Yeungnam University)
• 정진영(영남대학교 환경공학과) | Jinyoung Jung (Environmental Engineering, Yeungnam University)
• 최대희(영남대학교 환경공학과) | Daehee Choi (Environmental Engineering, Yeungnam University) Corresponding author