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Author(s): |
Sung Min Cha, Department of Environment, Gwangju Institute of Science and Technology, Gwangju, Korea
Seo Jin Ki, Department of Environment, Gwangju Institute of Science and Technology, Gwangju, Korea
Eun Ju Jung, Department of Environment, Gwangju Institute of Science and Technology, Gwangju, Korea
Hee Seon Kim, Department of Environment, Gwangju Institute of Science and Technology, Gwangju, Korea
Seung Won Lee, Department of Environment, Gwangju Institute of Science and Technology, Gwangju, Korea
Yeong Eun Park, Department of Environment, Gwangju Institute of Science and Technology, Gwangju, Korea
Min Kyu Park, Department of Environment, Gwangju Institute of Science and Technology, Gwangju, Korea
Joon Ha Kim, Department of Environment, Gwangju Institute of Science and Technology, Gwangju, Korea |
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Abstract: |
This study describes the nonurban runoff from agricultural area including paddy field and removal efficiency of the Naju Constructed Wetland (NCW) located in the Gomakwon catechment. To elucidate the characteristics of runoff and assess the reduction ability of nonpoint pollutants, seven monitoring for rainfall events were carried out and in the inflow and outflow of NCW. Considering the land use and major pollutants of NCW drain area, BOD5, CODMn, TN, NO3-N, TP, PO4-P, TSS, turbidity, conductivity, pH, temperature, precipitation, total coliform and E. coli. was measured. From the monitoring and analysis, it was found that the NCW achieves reasonable treatment efficiencies for stormwater runoff from the agricultural area. NCW Removal efficiency, in terms of mass removal, of 78-99% for total coliform and E.coli, 48% for BOD5, 43% for CODMn, 16% for TN, 74% for phosphorous were revealed. From these results, the wetland can be applied to water quality management with respect to total maximum daily load (TMDL) due to the mass reduction of pollutants.
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