살수식 여과조의 질산화작용에 대한 수리학적 부하량과 C/N 비의 영향 (Impacts of the Hydraulic Loading Rate and C/N Ratio on Nitrification in a Trickling Filter with Styrofoam Bead Media in Seawater)

서지정보

· 발행기관 : 한국수산과학회
· 수록지 정보 : 한국수산과학회지 / 52권 / 3호 / 256 ~ 267페이지
· 저자명 : 최태건, 김병기, 박정환

초록

Styrofoam beads, which are relatively inexpensive and can provide a large specific surface area, were tested as filter media. Styrofoam beads with a diameter of 3±0.5 mm were used; the specific surface area of the beads was 1,034 m2·m-3. Five independent recirculating culture systems were used in the experiment. Each system consisted of one culture tank and three trickling bio-filters. Using the systems, nitrification efficiency was evaluated with respect to hydraulic loading rate (HLR) and carbon/nitrogen (C/N) ratio. The lowest ammonia and nitrogen concentrations were 0.84 mg·L-1 and 1.30 mg·L-1, respectively, observed at an HLR of 50.9 m3·m-2·h-1. Nitrification efficiency in the culture tank was highest at a C/N ratio of 0, with ammonia and nitrite nitrogen concentrations of 0.32 mg·L-1 and 0.90 mg·L-1, respectively. Ammonia and nitrite nitrogen concentrations in the culture tank abruptly changed at C/N ratios ≥ 3.

영어초록

Styrofoam beads, which are relatively inexpensive and can provide a large specific surface area, were tested as filter media. Styrofoam beads with a diameter of 3±0.5 mm were used; the specific surface area of the beads was 1,034 m2·m-3. Five independent recirculating culture systems were used in the experiment. Each system consisted of one culture tank and three trickling bio-filters. Using the systems, nitrification efficiency was evaluated with respect to hydraulic loading rate (HLR) and carbon/nitrogen (C/N) ratio. The lowest ammonia and nitrogen concentrations were 0.84 mg·L-1 and 1.30 mg·L-1, respectively, observed at an HLR of 50.9 m3·m-2·h-1. Nitrification efficiency in the culture tank was highest at a C/N ratio of 0, with ammonia and nitrite nitrogen concentrations of 0.32 mg·L-1 and 0.90 mg·L-1, respectively. Ammonia and nitrite nitrogen concentrations in the culture tank abruptly changed at C/N ratios ≥ 3.

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