This study found that flotation efficiencies for removing algae and micro particles in raw water were optimized on mixing intensity and time of the mixing and flocculation conditions with a continuous DAF system. It is more efficient for mixing intensity at 23.1 s-1 and time at 660 s(Gt value : 15246) to float flocculated floc with the raw water in M water treatment plant. Flotation efficiency was more than about 0.9 when operated pressure and A/S ratio were sustained at 5 kgf․cm-2 and up to 0.056 mL․mg-1. The continuous DAF system made by the study could be continuously operated for 20 days and sustained not exceeding 4 NTU with raw water with low turbidity(13.4 ～ 9.8 NTU).

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 원수 및 분석방법
  2.2. 회분식 및 연속식 부상분리 실험방법
 3. 결과 및 고찰
  3.1. 교반조건에 따른 응집 특성
  3.2. 압력 및 A/S 비에 따른 부상분리 효율
  3.3. 연속운전에서 부상분리 효율
 4. 결 론
 참 고 문 헌

• 안갑환(부산가톨릭대학교 환경행정학과) | Kabhwan Ahn (Department of Environmental Administration, Catholic University of Pusan)
• 이창한(부산가톨릭대학교 환경행정학과) | Changhan Lee (Department of Environmental Administration, Catholic University of Pusan) Corresponding Author