@article{ART003009368},
author={Pyeol-Nim Park and Ji-Min Lee},
title={Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir},
journal={Journal of Environmental Impact Assessment},
issn={1225-7184},
year={2023},
volume={32},
number={5},
pages={291-304}
TY - JOUR
AU - Pyeol-Nim Park
AU - Ji-Min Lee
TI - Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir
JO - Journal of Environmental Impact Assessment
PY - 2023
VL - 32
IS - 5
PB - Korean Society Of Environmental Impact Assessment
SP - 291
EP - 304
SN - 1225-7184
AB - Harmful algal blooms (HABs) have become an increasing concern in terms of human health risks as well as aesthetic impairment due to their toxicity. The reduction of water pollutants, especially nutrients from non-point sources in a reservoir watershed, is fundamental for HABs prevention. We investigated the pollutant removal efficiencies of a constructed wetland to evaluate its feasibility as a method for controlling non-point sources located in the Annaecheon stream within the Daecheong Reservoir watershed. The overall removal efficiencies of pollutants were as follows: BOD 14.3%, COD 17.9%, SS 50.0%, T-N 19.0%, and T-P 35.4%. These results indicate that constructed wetlands are effective in controlling pollutants from non-point sources. The seasonal variation in removal efficiency depended on the specific pollutants. The removal efficiencies of BOD, COD, and T-N were stable throughout the year, except during winter, which might have been influenced by lower microorganism activity. In contrast, T-P showed a consistent removal efficiency even during the winter season, suggesting that the wetland can reduce external phosphorus loading to the reservoir.Regarding the effects of pollutant loadings on removal efficiency, the effluent concentrations of all pollutants were significantly decreased compared to those in the influent in case of middle and high loadings. This demonstrates that constructed wetlands can handle high pollutant loads, including the initial runoff during rainfall, to prevent reservoir eutrophication. Despite the various strengths of wetland water purification, there are limitations as passive treatment. Therefore, more case studies should be conducted to suggest optimum operational conditions for constructed wetlands, taking into consideration reservoir-specific characteristics.
KW - constructed wetland;non-point source;nutrient;harmful algal blooms;Annaecheon stream
DO -
UR -
ER -
Pyeol-Nim Park and Ji-Min Lee. (2023). Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir. Journal of Environmental Impact Assessment, 32(5), 291-304.
Pyeol-Nim Park and Ji-Min Lee. 2023, "Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir", Journal of Environmental Impact Assessment, vol.32, no.5 pp.291-304.
Pyeol-Nim Park, Ji-Min Lee "Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir" Journal of Environmental Impact Assessment 32.5 pp.291-304 (2023) : 291.
Pyeol-Nim Park, Ji-Min Lee. Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir. 2023; 32(5), 291-304.
Pyeol-Nim Park and Ji-Min Lee. "Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir" Journal of Environmental Impact Assessment 32, no.5 (2023) : 291-304.
Pyeol-Nim Park; Ji-Min Lee. Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir. Journal of Environmental Impact Assessment, 32(5), 291-304.
Pyeol-Nim Park; Ji-Min Lee. Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir. Journal of Environmental Impact Assessment. 2023; 32(5) 291-304.
Pyeol-Nim Park, Ji-Min Lee. Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir. 2023; 32(5), 291-304.
Pyeol-Nim Park and Ji-Min Lee. "Removal Efficiency of Non-point Source Pollutants through Constructed Wetland: Case Study of Annaecheon Wetland in Daecheong Reservoir" Journal of Environmental Impact Assessment 32, no.5 (2023) : 291-304.