In this study, the fate and removal of 15 pharmaceuticals (including stimulants, non-steroidal anti-inflammatory drugs, antibiotics, etc.) in unit processes of a sewage treatment plant (STP) were investigated. Mass loads of pharmaceuticals were 2,598 g/d in the influent, 2,745 g/d in the primary effluent, 143 g/d in the secondary effluent, and 134 g/d in the effluent. The mass loads were reduced by 95% in the biological treatment process, but total phosphorous treatment did not show a significant effect on the removal of most pharmaceuticals. Also, mass balance analysis was performed to evaluate removal characteristics of pharmaceuticals in the biological treatment process. Acetaminophen, caffeine, acetylsalicylic acid, cefradine, and naproxen were efficiently removed in the biological treatment process mainly due to biodegradation. Removal efficiencies of gemfibrozil, ofloxacin, and ciprofloxacin were not high, but their removal was related to sorption onto sludge. This study provides useful information on understanding removal characteristics of pharmaceuticals in unit processes in the STP.

ABSTRACT
1. 서 론
2. 연구방법
    2.1 조사대상 물질
    2.2 조사대상 시설 및 시료 채수
    2.3 전처리 및 분석방법
    2.4 정도보증/정도관리
    2.5 물질수지 분석
3. 결과 및 고찰
    3.1 하수처리시설 잔류의약물질 농도 분포
    3.2 단위공정별 잔류의약물질 거동 및 제거효율
    3.3 생물학적 처리공정에서의 제거 특성
4. 결 론
References

• 박준원(국립환경과학원 환경기반연구부) | Junwon Park (Department of Environmental Infrastructure Research, National Institute of Environmental Research)
• 김창수(국립환경과학원 환경기반연구부) | Changsoo Kim (Department of Environmental Infrastructure Research, National Institute of Environmental Research)
• 이원석(국립환경과학원 환경기반연구부) | Wonseok Lee (Department of Environmental Infrastructure Research, National Institute of Environmental Research)
• 이수형(국립환경과학원 환경기반연구부) | Soo-Hyung Lee (Department of Environmental Infrastructure Research, National Institute of Environmental Research)
• 정현미(국립환경과학원 환경기반연구부) | Hyenmi Chung (Department of Environmental Infrastructure Research, National Institute of Environmental Research)
• 정동환(국립환경과학원 환경기반연구부) | Dong-Hwan Jeong (Department of Environmental Infrastructure Research, National Institute of Environmental Research) Corresponding author