Eutrophication and algal blooms can lead to increase of taste and odor compounds and health problems by cyanobacterial toxins. To cope with these eco-social issues, Ministry of Environment in Korea has been reinforcing the effluent standards of wastewater treatment facilities. As a result, various advanced phosphorus removal processes have been adopted in each wastewater treatment plant nation-widely. However, a lot of existing advanced wastewater treatment processes have been facing the problems of expensive cost in operation and excessive sludge production caused by high dosage of coagulant. In this study, the sedimentation and dissolved air flotation (SeDAF) process integrated with sedimentation and flotation has been developed for enhanced phosphorus removal in wastewater treatment facilities. Design and operating parameters of the SeDAF process with the capacity of 100 m3/d were determined, and a demonstration plant has been installed and operated at I wastewater treatment facility (located in Gyeonggi-do) for the verification of field applicability. Several empirical evaluations for the SeDAF process were performed at demonstration-plant scale, and the results showed clearly that T-P and turbidity values of treated water were to satisfy the highest effluent standards below 0.2 mg/L and 2.0 NTU stably for all of operation cases.

ABSTRACT
1. 서 론
2. 재료 및 실험방법
    2.1 일체형 침전부상공정의 실증플랜트 개요
    2.2 실증플랜트 구축 및 운전조건
    2.3 분석기기 및 통계분석 방법
3. 결과 및 고찰
    3.1 기존 총인처리시설의 주요 개발방향 검토
    3.2 일체형 침전부상공정 실증플랜트의 설계인자 검토
    3.3 실증플랜트의 운전특성 평가
4. 결 론
References

• 장여주((주)레오테크 기술사업본부) | Yeoju Jang (Department of Business Headquarters, LEOTEK Co., Ltd.)
• 정진홍(한국건설기술연구원 국토보전연구본부 환경자원재생연구센터) | Jinhong Jung (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT))
• 임현만(한국건설기술연구원 국토보전연구본부 환경자원재생연구센터) | Hyunman Lim (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT))
• 김원재(한국건설기술연구원 국토보전연구본부 환경자원재생연구센터) | Weonjae Kim (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT)) Corresponding author