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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1997.8
- 수록면
- 261 - 271 (11page)
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Ammonia removal capacities of five submerged filter media, 2~3 ㎜ sand, 30~50 ㎜ gravel, 20~40 ㎜ coral sand, polyethylene net, and corrugated plastic plate in a seawater recirculating system were tested. A rotating biological contactor (RBC) was also tested for comparison. Oxygen consumption rates were measured along with the ammonia removal efficiencies.
The ammonia concentrations in the system were maintained from 0.052 to 0.904 ㎎/ℓ (mean 0.338±0.219 ㎎/ℓ) and the water temperature was ranged from 19.2 to 21.4℃ (mean 20.2℃±0.58℃). The 1/2-order kinetic model (Y : g/㎥/day) and the mean ammonia removal rates (g/㎥/day) of the filter media were :
Sand : Y=135.5X^(0.5)-25.1 (r²=0.8110), 45.1
Coral sand : Y=125.1X^(0.5)-33.0 (r²=0.7307), 31.8
Polyethylene net : Y=87.4X^(0.5)-20.1 (r²=0.6780), 25.2
Corrugated plastic plate : Y=71.1X^(0.5)-17.6 (r²=0.5206), 19.2
Gravel : Y=43.7X^(0.5)-5.5 (r²=0.2596), 17.1
RBC : Y=127.6X^(0.5)-33.4 (r²=0.7146), 32.8
where X is the concentration of ammonia.
Oxygen consumption rates well corresponded to the ammonia removal capacities of each filter medium, thus the sands showing the highest value (442 g/㎥/day) followed by coral sands (291.1 g/㎥/day), polyethylene nets (236.9 g/㎥/day), gravels (135.6 g/㎥/day) and corrugated plastic plates (134.2 g/㎥/day). Oxygen consumption rate of the RBC was unable to measure because of the characteristics of the structure.
The ammonia concentrations in the system were maintained from 0.052 to 0.904 ㎎/ℓ (mean 0.338±0.219 ㎎/ℓ) and the water temperature was ranged from 19.2 to 21.4℃ (mean 20.2℃±0.58℃). The 1/2-order kinetic model (Y : g/㎥/day) and the mean ammonia removal rates (g/㎥/day) of the filter media were :
Sand : Y=135.5X^(0.5)-25.1 (r²=0.8110), 45.1
Coral sand : Y=125.1X^(0.5)-33.0 (r²=0.7307), 31.8
Polyethylene net : Y=87.4X^(0.5)-20.1 (r²=0.6780), 25.2
Corrugated plastic plate : Y=71.1X^(0.5)-17.6 (r²=0.5206), 19.2
Gravel : Y=43.7X^(0.5)-5.5 (r²=0.2596), 17.1
RBC : Y=127.6X^(0.5)-33.4 (r²=0.7146), 32.8
where X is the concentration of ammonia.
Oxygen consumption rates well corresponded to the ammonia removal capacities of each filter medium, thus the sands showing the highest value (442 g/㎥/day) followed by coral sands (291.1 g/㎥/day), polyethylene nets (236.9 g/㎥/day), gravels (135.6 g/㎥/day) and corrugated plastic plates (134.2 g/㎥/day). Oxygen consumption rate of the RBC was unable to measure because of the characteristics of the structure.
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