| Title |
A Study on Leaching Characteristics Change for Sediment Dredging in Yongwon Channel, Busan New Port |
| Authors |
추민호(Choo, Min Ho) ; 김영도(Kim, Young Do) ; 정원무(Jeong, Weon Mu) |
| DOI |
https://doi.org/10.12652/Ksce.2017.37.3.0541 |
| Keywords |
퇴적물 용출;수질;용원수로;퇴적토 준설 Sediment release;Water quality;Yongwon channel;Sediment dredging |
| Abstract |
In Yongwon channel, its natural flow of seawater is blocked by the construction of Busan Newport including the container berth. The channel was transformed into a narrow and long one, where it is possible that ships are only allowed to pass through the north-side channel of Gyeonmado located at the point of river mouth to Songjeongcheon. So it is considered that the changes in the terrain characteristics of Yongwon channel is likely to alter the circulation of sea water, thereby changing its water quality. Contaminants are accumulated from the sediment release. In this study, before and after dredging the sediment release test was performed. As a result, after the sediment dredging is performed, the reduction rate was higher at the same point. The results show that the water quality can be improved by dredging. Each group (A~C) reduction rate of the evaluation of the reduction rate of 4.64% T-N, 18.00%, 18.59%, respectively. T-P rate of 24.75% reduction, 24.17%, 44.08%, respectively. COD reduction rate was 18.57%, 19.76%, 38.08%, respectively. These results can be used as basic data for controlling the contamination by dredging in Yongwon channel. |