| Title |
Comparison of Estimation Method of Pollutant Unit Loads from Bridge Area |
| Authors |
김태원 ( Tae Won Kim ) ; 길경익 ( Kyung Ik Gil ) |
| Keywords |
Arithmetic average method; Nonpoint sources; Pollutant unit Load; Rainfall class method; Regression method |
| Abstract |
This research analyzed the runoff patterns and estimated unit loads of selected pollutatnts using monitored data conducted for three years in a bridge area. Three estimating methods; the arithmetic average method, the regression method and the rainfall class method were used to estimate the unit load. Results of three estimating methods were compared with the unit pollutant loads from landuses in Korea and the unit pollutant loads from urban watersheds in Milwaukee, USA. Unit load using the arithmetic mean method were found to be overestimated. In terms of TSS, unit loads of two estimate were half lower than that of USA. Estimated TN and TP unit loads of three estimate were lower than that of Ministry of Environment in Korea. |