| Title |
A Study on Kinetics of Oxygen in Small Size Pond using Oxygen Solubilization Device System |
| Authors |
김영택 ( Young Taek Kim ) ; 배윤선 ( Yoon Sun Bae ) ; 노은경 ( Eun Kyung Roh ) ; 박철휘 ( Chul Hwi Park ) |
| Keywords |
Oxygen solubilization device; Oxygen transfer coefficient (K(La)); Sediment Oxygen Demand; SOD |
| Abstract |
The major problem in closing water like lakes and ponds in Korea is that because they are exposed to surrounding, so easily polluted. The pollution in closing water can be caused by not only artificial factor like sewage but also natural factor like elution from sediment. For insurance of safe and satisfied water source, lots of studies and projects are now going on. In this study, we examined the behavior and effect of microbubble (3~10 ㎛ produced by device called O.S.D (Oxygen Solubillization Device) in small size pond. The value of oxygen transfer coefficient (K(La)) was 0.68/min independently of airflow rate, 6.5 times higher than commercial aeration stone and the variation of nitrogen concentration was 0.008 NO3/O2, DO concentration was potentially saturated for 24 hr. From the results of pilot plant, SOD of experiment (O.S.D) and control were12.18 gO2 · m(-2) · d(-1) and 47.95 gO2 · m(-2) d(-1) respectively. In conclusion, because O.S.D has extraordinary physico-chemical characteristics, it can contribute to improvement of both the waterbody and the sediment environment. |