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.

Abstract
 1. 서 론
 2. 실험방법 및 재료
  2.1. 입상활성탄
  2.2. 입상활성탄 재생
  2.3. 재생탄 물성치 실험
  2.4. 연속 흡착실험
  2.5. 수질분석
 3. 실험결과 및 고찰
  3.1. 재생탄 물리·화학적 특성
  3.2. 연속 컬럼 흡착실험
  3.3. 재생비용 평가
 4. 결론
 REFERENCE

• 김상구(부산광역시 상수도사업본부 수질연구소) | Sang-Goo Kim (Water Quality Institute, Busan Water Authority)
• 손희종(부산광역시 상수도사업본부 수질연구소) | Hee-Jong Son (Water Quality Institute, Busan Water Authority) Corresponding author
• 정종문(부산광역시 상수도사업본부 수질연구소) | Jong-Moon Jung (Water Quality Institute, Busan Water Authority)
• 류동춘(부산광역시 상수도사업본부 수질연구소) | Dong-Choon Ryu (Water Quality Institute, Busan Water Authority)
• 유평종(부산광역시 상수도사업본부 수질연구소) | Pyung-Jong Yoo (Water Quality Institute, Busan Water Authority)