대한환경공학회지 (Journal of Korean Society of Environmental Engineers)
- 제22권7호
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- Pages.1263-1271
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- 2000
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- 1225-5025(pISSN)
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- 2383-7810(eISSN)
응집 현상에 따른 오염물질 제거 및 입자 형태 특성: Alum을 사용한 경우
Pollutant Removal and Characteristic of Floc by Alum Coagulation
- Moon, Byung-Hyun (Dept. of Environ. Eng., Changwon National University) ;
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Kim, Seung-Hyun
(Dept. of Architectural, Civil and Environ. Eng., Kyungnam University) ;
- Lee, Hyang-In (Dept. of Environ. Eng., Changwon National University)
- 투고 : 2000.02.02
- 심사 : 2000.04.17
- 발행 : 2000.07.31
초록
Alum을 이용한 응집 과정에서 탁도 및 유기물 제거와 응집 floc의 특성을 파악하였다. 본 실험에서 구한 탁도 제거영역을 Amitharajah의 연구결과와 비교했을 때 sweep floc 및 charge neutralization의 제거영역이 낮은 pH 영역으로 이동하였는데 그 원인은 원수에 포함된 유기물 농도가 다른데서 찾을 수 있다. 대체적으로 탁도 및 유기물(
This study investigated the floc structure and removal of turbidity and organic matter by alum coagulation. Results of this study indicated that sweep floc and charge neutralization area were shifted to more acidic region than that in the Amirtharajah's diagram. This was caused by organic matter present in the raw water. Removal regions of turbidity and organic matter were generally overlapped. However, organic matters was removed better at lower pH than turbidity. Floc structure was characterized by measuring fractal dimension and volume diameter using AIA and SALLS. SALLS method was found to be more reliable than AIA method. Floes in sweep floc region had larger size and fractal dimension than flocs in charge neutralization region. As pollutant removal increased, larger fractal dimension and size of floc were measured.