| Title |
The effect of greening roof on the quantity and quality of rainfall runoff |
| Authors |
Han Moo-Young ; Kim Joon-Kyu ; Park Sang-Cheol |
| Keywords |
빗물저장 ; 빗물유출저감 ; 빗물의 수질변화 ; 옥상녹화빗물저장 ; 빗물유출저감 ; 빗물의 수질변화 ; 옥상녹화 |
| Abstract |
Greening roof is gaining much interest as means for reduction of heat island effect and prevention of urban flooding. However, the effect of Greening roof on the quantity and quality of runoff has not been addressed simultaneously. In this study, the characteristics of rainfall runoff is investigated by a set of pilot plants with different depths of soil in order to investigate the effect of greening roof on the runoff characteristics and runoff water quality. Greening roof had reduction of rainfall runoff about 23-95 % at the 10 cm of depth of soil and about 24-100% at the 20 cm of depth of soil. Also, greening roof could decrease runoff of rainfall about 84-91 % of total quantity of rainfall during experimental period. However, greening roof gives much impact to the water quality. Filtrate of greening roof has been neutralized (pH 7-7.5) from acidic (pH 4-5). However, electro conductivity and turbidity of greening roof slightly increased. ??Overall, the greening roof has a good potential to reduce and delay the runoff peak flow. The quality of runoff from greening roof is good enough to be used for non drinking purpose. |