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KMID : 1024520120210080977
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Journal of the Environmental Sciences
2012 Volume.21 No. 8 p.977 ~ p.988
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Estimation of Runoff Characteristics of Non-point Pollutant Source by Land Cover Characteristics
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Lee Jae-Woon
Yi Youn-Jung
Kwon Hun-Gak
Yoon Jong-Su
Lee Chun-Sik
Cheon Se-Uk
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Abstract
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This study analyzed the characteristics of stormwater runoff by rainfall type in orchard areas and transportation areas for
2 years(2010~2011year). Effluents were monitored to calculate the Event Mean Concentrations(EMCs) and runoff loads of
each pollutant.
The pollutant EMCs by volume of stormwater runoff showed the ranges of BOD 0.9~13.6 ㎎/L, COD 13.7~45.2 ㎎/L, SS
4.1~236.4 ㎎/L, T-N 2.123~21.111 ㎎/L, T-P 0.495~2.214 ㎎/L in the orchard areas, and was calculated as BOD 2.3~22.5㎎
/L, COD 4.4~91.1 ㎎/L, SS 4.3~138.3 ㎎/L, T-N 0.700~13.500 ㎎/L, T-P 0.082~1.345 ㎎/L in the transportation areas.
The correlation coefficient of determination in the orchard area was investigated in the order of Total Rainfall(0.81) >
Total Runoff(0.76) > Rainfall Intensity(0.56) > Rainfall Duration(0.46) > Antecedent Dry Days(0.27). Also, in the case of
the transportation area was investigated in the order of Total Rainfall (0.55) > Total Runoff(0.54) > Rainfall Intensity(0.53) >
Rainfall Duration(0.24) > Antecedent Dry Days(0.14).
As the result, comparing valuables relating to runoff of non-pollutant source between orchard areas and transportation
areas, orchard area(R2 ≥ 0.5 : X3, X4, X5) was investigated to have more influence of diverse independent valuables
compared to the transportation area(R2 ≥ 0.5 : X3, X4) and the difference of discharge influence factor by the land
characteristics appeared apparently.
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KEYWORD
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Non-point, EMCs, Pollution load, Orchard area, Transportation area
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