입상활성탄 재생온도에 따른 정수처리 효율 평가 = ORIGINAL ARTICLE : Evaluation of Drinking Water Treatment Efficiency according to Regeneration Temperatures of Granular Activated Carbon (GAC)

다국어 초록 (Multilingual Abstract)

This study carried out continuous column test for estimating the regeneration efficiency with regeneration times and temperatures. More times regenerated granular activated carbon (GAC) has more ash in the GAC and has less apparent density. Two times regenerated GAC (2nd re-GAC) could removed the Trihalomethanes (THMs) in the water for the first two week after starting continuous column test, on the other hand five times regenerated GAC (5th re-GAC) did not have adsorption capacity. The THMs concentration in the effluent was almost equal or higher than that of influent at the first time of continuous column test. 2nd re-GAC showed much more DOC adsorption capacity than 5th re-GAC and the GAC which was regenerated with 700 ℃ had highest DOC removal efficiency among the GACs with 600, 700, 800, 900 ℃ regeneration temperatures. It is anticipated the cost of GAC regeneration could be saved more 100 million won by reducing the furnace temperature of 3rd~4th and 5th~6th about 150 ℃ compared to the current regeneration condition.

참고문헌 (Reference)

• 1 손희종, "활성탄 공정에서의 염소 소독부산물 제거특성(050525-050719)" 대한환경공학회 27 (27): 762-770, 2005
• 2 손희종, "석탄계 활성탄의 재생 횟수 증가에 따른 세공 구조 변화가 수중의 NOM과 THM 흡착에 미치는 영향" 대한환경공학회 32 (32): 965-972, 2010
• 3 노재순, "고도정수처리 공정에서의 천연유기물질 특성변화 및 소독부산물 전구물질의 제거특성 평가" 대한환경공학회 24 (24): 3-2087, 2002
• 4 Waer, M. A., "Thermal regeneration of activated carbon for the treatment of drinking water: time and temperature dependence" 84 (84): 82-91, 1992
• 5 Ebie, K., "Pore distribution effect of activated carbon in adsorbing organic micropollutants from natural water" 35 (35): 167-179, 2001
• 6 Narbaitz, R. M., "Electrochemical regeneration of field spent GAC from two water treatment plants" 46 : 4852-4860, 2012
• 7 Cannon, F. S., "Effect of calcium in field-spent GACs on pore development during regeneration" 85 (85): 76-89, 1993
• 8 손희종, "DGGE 기법을 이용한 생물활성탄 공정의 부착 박테리아 군집분석" 대한환경공학회 34 (34): 533-540, 2012
• 9 Moore, B. C., "Changes in GAC pore structure during full-scale water treatment at Cincinnati: a comparison between virgin and thermally reactivated GAC" 39 : 789-807, 2001
• 10 Dąbrowski, P., "Adsorption of phenolic compounds by activated carbon-a critical review" 58 : 1049-1070, 2005