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논문 기본 정보

자료유형
학위논문
저자정보

브르테 (인하대학교, 인하대학교 대학원)

지도교수
김창균
발행연도
2017
저작권
인하대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (2)

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This study aims to treat acid mine drainage (AMD) containing significant amount of arsenic (As) by dissolved air flotation (DAF) combined with microbubble (MB) technology. Artificial AMD synthesized to have initial concentrations of 2 mg/L of As and 10 mg/L of iron (Fe) was tested with DAF columns of 20 L capacity. DAF process has merits in solid/liquid separation of process water due to its advantages such as high loading rate, thicker sludge product, shorter flocculation time and smaller footprint over gravity clarification. Ferric sulfate was used as the coagulant and kaolin as the coagulant aid. Quantitative As and Fe removals were achieved up to 99% and 75%, respectively. Residual As content sufficiently satisfied the mine waste effluent standard (500 μg/L) and drinking water standard (10 μg/L).

목차

Abstract i
Contents ii
List of Figures iv
List of Tables v
1. Introduction 1
1.1 Background 1
1.2 Acid Mine Drainage 3
1.2.1 Physical-chemical characteristics of AMD 3
1.2.2 Treatment technologies for AMD 4
1.3 Arsenic 4
1.3.1 Chemistry of arsenic 4
1.3.2 Treatment technologies/methods for arsenic removal 5
1.4 Dissolved Air Flotation and Microbubble Technology 5
1.5 Purpose of the study 5
2. Materials and method 6
2.1. Materials 6
2.1.1 Synthetic acid mine drainage 6
2.1.2 Coagulant and coagulant aid 8
2.1.3 Apparatus 9
2.2 Method 11
2.2.1 Experimental set up 11
3. Results and discussion 15
3.1 Experimental result on addition of kaolin 16
3.2 Experimental result on different mixing intensities 17
3.3 Experimental result on different kaolin concentrations 18
3.4 Experimental result on the change of air injection rate 19
4. Conclusions 20
5. References 21

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