| Title |
A Study on the Discharge Characteristics of Non-point Pollutant Source in the Agricultural Area of the Kyongan Watershed |
| Authors |
이병수 ( Byung Soo Lee ) ; 정용준 ( Yong Jun Jung ) ; 박무종 ( Moo Jong Park ) ; 길경익 ( Kyung Ik Gil ) |
| Keywords |
Discharge characteristic; Event mean concentration; EMC; Kyongan watershed; Non-point source; NPS; Rainfall characteristics |
| Abstract |
A field monitoring was conducted in order to find out the discharge characteristics of non-point source pollutants in the agricultural area. Event Mean Concentration (EMC) of TSS, BOD5, CODMn, TP, TN was calculated based on the monitoring data of 10 rainfall events at agricultural watersheds. A significant relationship was observed from the correlation between EMCs and rainfall characteristics. The result shows that EMC ranges of 95% confidence intervals were 50.5~203 mg/L for TSS, 0.8~14.2 mg/L for BOD5, 4.2~20.7 mg/L for CODMn, 2.4~4.5 mg/L for TN and 0.2~0.5 mg/L for TP, respectively. The correlation coefficients between TSS and TP and between BOD5 and CODMn were found to be 0.912 and 0.961. But TN was lower correlated with other EMC factors. It was also found that rainfall characteristics was not correlated with EMCs. |