In this study the effects of co-digestion of sewage sludge and food waste leachate on the anaerobic digestion efficiencyfrom sewage treatment facilities in S. Korea were investigated. For this study 15 facilities were selected including 9facilities treating sewage sludge only (S-Only) and 6 facilities treating sewage sludge and food waste leachate (S-MIX).The average volatile solid (VS) removal rate of S-Only was 30.7% and that of S-MIX was 45.2%. The COD removalrate of S-MIX (61.3%) was higher than that of S-Only (48.6%). It has been observed that the anaerobic digestion efficiencyof S-MIX was superior to that of S-Only because S-MIX contained more sufficient nutrient with higher VS contents andtotal solid (TS) contents emerging from food waste leachate. Therefore food waste leachate addition in sewage sludgeanaerobic digestion would be the preferred option to treat only sewage sludge.

Abstract
 I. 서 론
 II. 연구 방법
  1. 대상시설 설정 및 시료채취
  2. 분석방법
 III. 결과 및 고찰
  1. 시료의 물리화학적 특성
  2. VS 제거율과 CODCr 제거율
  3. S-Only와 S-MIX의 소화효율에 대한 결과비교
 IV. 결 론
 References

• 이동진(국립환경과학원 환경자원연구부) | Dong-Jin Lee
• 이수영(국립환경과학원 환경자원연구부) | Su-Young Lee
• 강준구(국립환경과학원 환경자원연구부) | Jun-Gu Kang
• 이성수(국립환경과학원 환경자원연구부) | Seong-Soo Lee
• 김영란(국립환경과학원 환경자원연구부) | Young-Lan Kim
• 황동건(국립환경과학원 환경자원연구부) | Dong-Gun Hwang
• 김기헌(국립환경과학원 환경자원연구부) | Ki-Heon Kim
• 정진(국립환경과학원 환경자원연구부) | Jin Chung Corresponding author