인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
The immobilization of nitrifier consortium was carried out for the application to recirculating aquaculture system(RAS). The abilities of NH₄⁺-N removal by immobilized nitrifier consortia prepared with borc acid treated, ethanol treated, and freezing-thawing treated PVA beads at the concentration of 15% were examined. To identify the possibility of applying the beads in the fluidized bed reactor, characteristics of beads were evaluated. The suitable bead was borc acid treated beads which had highest ammonia removal rate of 16.09 g/m³/day. It took 12 days for nitrifier consortium immobilized beads to be stable for the removal of NH₄⁺-N. Life spans of the beads were more than three months with aggressive aeration in the fluidized bed reactor when nitrifier consortia immobilized in PVA beads were used. In order to apply the nitrifier consortium immobilized beads to aquaculture facility, the continuous reactor was used for 49 days with synthetic aquacultural water containing 2 mg/L ammonia. The highest ammonia removal rate of 31.87 g/m³/day was observed when hydraulic residence time was 0.6 hour(36min.).
본문·목차
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