This study, changes in raw water quality is to indicate on the efficiency of ozone treatment of each pollutant as compared to derive the appropriate operating measures. The appropriate selection for injection rate of pre-ozone and did not inject pre-ozone assess changes in the water. When good water quality, you not injected of pre-ozone to evaluate the economic efficiency of electricity and put the most cost-effective ozone concentration were evaluated. Evaluation remove organic matter and chlorophyll-a concentration level in experiments with each factor of the water DOC> 2.5 ㎎ / L, THMFP> 70 ㎍ / L, Chl-a> 30 ㎎/ ㎥or less constant process, if you do not need to put pre-ozone showed little impact. It also does not put you in pre-ozone appropriate produce enough power rate savings was calculated as approximately 90 million won. Ability to remove organic materials and the ability to produce disinfection byproducts, and cost-effective decisions by considering the concentration of injection if pre-ozone 1 mg/L was investigated by the appropriate concentration of ozone injection.

Abstract
 1. 서 론
 2. 실험재료 및 방법
  2.1. 실험재료
  2.2. 분석방법
  2.3. 경제성 평가
 3. 결과 및 고찰
  3.1. 산화환원전위 및 오존전달율 평가
  3.2. 유기물질 제거율
  3.3. 클로로필-a 제거율 특성
  3.4. 오존공정의 전력비용 산출 및 경제성 평가
 참 고 문 헌

• 최동훈(부산광역시 상수도사업본부 수질연구소) | Dong-Hoon Choi (Water Quality Institute, Water Authority)
• 류동춘(부산광역시 상수도사업본부 수질연구소) | Dong-Choon Ryu (Water Quality Institute, Water Authority)
• 권기원(부산광역시 상수도사업본부 수질연구소) | Ki-Won Kwon (Water Quality Institute, Water Authority)
• 이수애(부산광역시 상수도사업본부 수질연구소) | Soo-Ae Lee (Water Quality Institute, Water Authority)
• 박진식(경운대학교 보건바이오학부) | Jin-Sik Park (School of Healthcare & Biotechnology, Kyungwoon University)
• 문추연(경운대학교 보건바이오학부) | Choo-Yeun Moon (School of Healthcare & Biotechnology, Kyungwoon University)
• 이재용(경운대학교 보건바이오학부) | Jae-Yong Lee (School of Healthcare & Biotechnology, Kyungwoon University)
• 장성호(부산대학교 바이오환경에너지학과) | Seong-Ho Jang (Department of Bioenvironmental Energy, Pusan national University) Corresponding author