This study was carried out in order to observe how the bay sediment would be changed with microbial treatments and a chemical oxidant like CaO2. The sediment during the treatments was analyzed in terms of pH, ORP, volatile organics content, COD, AVS, T-N, and T-P. With CaO2 treatment, pH was kept over 9.66 and ORP ranged from +4.70～+46.0, which meant an aerobic state meanwhile with the microbial treatment those were worse. In addition the chemical treatment showed better environmental index values than the microbial one: volatile organics content and COD values in the former were 12.9% and 37.9% while those in the latter were 4.5% and 18.7%, respectively. AVS and T-P were 71.1% and 100% versus 56.5% and 85.8%, respectively. However, the microbial treatment was better for T-N(66% higher). On the other hand, both treatment at a time enhanced all the environmental indices but COD meantime pH and ORP values were lower than with the chemical treatment only. Thus additional input of an oxygen generator like CaO2 could improve the environmental state of a bay sediment where the biological treatment is going on.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험재료
  2.2. 실험방법
 3. 결과 및 고찰
  3.1. 미생물제재와 CaO2 처리에 의한 pH 관찰
  3.2. 미생물제재와 CaO2 처리에 의한 ORP(oxidationReduction Potential) 관찰
  3.3. 미생물제재와 CaO2 처리에 의한 유기물 변화
  3.4. 미생물제재와 CaO2 처리에 의한 AVS 및 영양염 변화
 4. 결 론
 참 고 문 헌

• 조대철(순천향대학교 에너지환경공학과) | Daechul Cho (Department of Energy & Environmental Engineering, Soonchunhyang University)
• 배환진(경상대학교 해양과학대학 해양환경공학과(해양산업연구소)) | Hwan-Jin Bae (Department of Marine Environmental Engineering and Institute of Marine Industry, Gyeongsang National University)
• 권성현(경상대학교 해양과학대학 해양환경공학과(해양산업연구소)) | Sung-Hyun Kwon (Department of Marine Environmental Engineering and Institute of Marine Industry, Gyeongsang National University) Corresponding Author
• 이정렬((주) 에스제이바이오) | Jung-Yeol Lee (Sjbio Company)