| Title |
Assessments of Rainwater Runoff Quality from Soil Roofs According to Layer Thickness |
| Authors |
박종석 ( Jong Seok Park ) ; 심춘석 ( Chun Seok Sim ) ; 문병석 ( Byoung Seok Moon ) |
| Keywords |
Gravel roofs; Rainwater; Runoff quality; Soil roofs |
| Abstract |
This study aimed at analyzing the runoff quality by the layer thickness and material of soil roof to make best use of the rainwater falling on it in terms of safety and efficiency and resulted in the following assessments. It turned out that the concentrations decreased more in T-N, NO3-N, NH4-N, T-P and PO4-P in roof rainwater except 30 cm for the RW1 soil roof after passing through it than those of first rainwater. On the other hand, the concentrations in rainwater passing through gravel roof turned out to be equal or same to those of the first rainwater. As a result of analysis of metallic stuff in runoff, there was no indication of Cd, Cr, Mn and Pb as well. The concentration of Cu, Fe and Zn in rainwater through soil roof became less than that of the first rainwater. In this research, the soil roof showed the good efficiency in lowering the concentration of such components as nitrogen, phosphorus and metals. Based on the results from this work, more practical study would be required further in the future in relation to soil roof when installing the rainwater-utilizing facilities. |