표제지
목차
요지 6
1. 서론 12
2. 이론적 배경 13
3. 연구지역 및 지질 17
4. 실험방법 20
4.1. 시료채취 20
4.2. 현장측정 및 이온분석 20
5. 실험 장치 22
6. 결과 및 고찰 25
6.1. 통기갱 갱내수의 시료분석 결과 25
6.2. 갱내수 처리실험 결과 및 고찰 29
6.2.1. 폭기 실험(Ⅰ) 29
6.2.2. Sludge 첨가와 폭기 실험(Ⅱ) 32
6.2.3. 철산화물 첨가, 폭기 및 철산화물 반송실험(Ⅲ) 42
6.2.4. 부유물질 46
7. 결론 53
8. 참고문헌 55
Abstract 58
감사의 글 60
Table 1. Physicochemical properties of AMD of the ventilation adit in the Yeonhwa Mine in 2007 and 2008. 26
Table 2. The varying amount of SS depending on the added amount of the ventilation adit sludge of the Yeonhwa mine with aeration. 47
Table 3. The varying amount of SS depending on the added amounts and size of sludge of the Hamtae coal mine. 49
Table 4. The varying amount of SS depending on the added amounts of sludge of the ventilation adit. 52
Table 5. The varying amount of SS depending on the velocity of transfering precipitates from the settling tank to the reaction tank. 4g sludge of the ventilation adit was added. 52
Fig. 1. Effect of initial Fe(Ⅲ) on the removal of Fe(Ⅱ) in batch reactor tests at the Bird Mine site(Dempsey et al., 2001). 15
Fig. 2. A mountain chain and water system near study area. 18
Fig. 3. The inside of the ventilation adit. 19
Fig. 4. Water channel of AMD in the ventilation adit. 19
Fig. 5. Designs of the Reactors for the Treatment System of AMD in the Yeonhwa Mine. 23
Fig. 6. pH changes of AMD of the ventilation adit with time. 27
Fig. 7. Changes of Fe contents of AMD of the ventilation adit with time. 27
Fig. 8. Changes of Mn contents of AMD of the ventilation adit with time. 28
Fig. 9. Changes of SO42- contents of AMD of the ventilation adit with time.(이미지참조) 28
Fig. 10. Changes of iron contents with time in batch test with aeration. 30
Fig. 11. Changes of iron contents with time in continuous system test with aeration. 31
Fig. 12. Results of batch tests for the reduction of iron contents with time. AMD was aerated and added different amounts of the ventilation adit sludge. 33
Fig. 13. Results of continuous system test for the reduction of iron contents with time. AMD was aerated and 2g sludge of the ventilation adit was added. 34
Fig. 14. Results of batch test for the reduction of iron contents with various sludge sizes. AMD was aerated and 2g sludge the Hamtae Coal Mine was added. 36
Fig. 15. Results of batch test for the reduction of iron contents with various sludge sizes. AMD was aerated and 4g sludge the Hamtae Coal Mine was added. 37
Fig. 16. Results of batch test for the reduction of iron contents with various sludge sizes. AMD was aerated and 8g sludge the Hamtae Coal Mine was added. 38
Fig. 17. Results of continuous system test for the reduction of iron contents with time. AMD was aerated and 2g sludge the Hamtae Coal Mine was added. 39
Fig. 18. Results of continuous system test for the reduction of iron contents with time. AMD was aerated and 4g sludge the Hamtae Coal Mine was added. 40
Fig. 19. Results of continuous system test for the reduction of iron contents with time. AMD was aerated and 64g sludge the Hamtae Coal Mine was added. 41
Fig. 20. Results of continuous system test for the reduction of iron contents with time. AMD was aerated and 2g sludge of the ventilation adit was added. Precipitates in the settling tank was transferred to the reaction tank. 43
Fig. 21. Results of continuous system test for the reduction of iron contents with time. AMD was aerated and 4g sludge of the ventilation adit was added. Precipitates in the settling tank was transferred to the reaction tank. 44
Fig. 22. Results of continuous system test for the reduction of iron contents with time. AMD was aerated and 64g sludge of the ventilation adit was added. Precipitates in the settling tank was transferred to the reaction tank. 45
Fig. 23. Variation of SS depending on the amount of sludge. 50