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Temporal and Spacial Distributions of Water Quality and Evaluation of Pollutant Removal Efficiency in the Sihwa Constructed Wetland  

Choi, Don-Hyeok (Sihwa Lake Environmental Management Center, Korea Water Resources Corporation)
Choi, Kwang-Soon (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Kim, Dong-Sup (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Kim, Sea-Won (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Choi, Dong-Ho (Institute of Construction Technology, Kumho Engineering & Construction)
Hwang, In-Seo (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Lee, Yun-Kyoung (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Kang, Ho (Civil and Environmental Engineering, Chungnam National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.30, no.10, 2008 , pp. 1013-1020 More about this Journal
Abstract
To evaluate the pollutant removal efficiency and clarify the cause of low removal efficiency of the wetland, temporal and spacial distributions of water quality were investigated at 16 sites in the Sihwa constructed wetland. The removal efficiency showed a tendency to decrease since the construction of the wetland, except for TN. In addition, the efficiency was largely varied with season, especially BOD and TP. No removal efficiency of BOD was observed in April and July when algal bloom was occurred in lower part open water of the wetland. On the other hand, TP showed no removal efficiency from April to August showing -291% of removal efficiency in August. From the horizontal distribution in closed water regions, SS concentration for the central area was significantly higher than for left and right areas(p = 0.013, center > left > right areas). From the results of this study, we infer that anaerobic condition due to the excessive accumulation of organic matters and lack of uniformity of water flow distribution are major factors of the low removal efficiency of the wetland.
Keywords
Constructed Wetland; Distribution of Water Quality; Removal Efficiency; Cause Analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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