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Influence of rainfall characteristics on pollutant wash-off for road catchments in urban Shanghai.
- Source :
-
Ecological Engineering . Aug2015, Vol. 81, p102-106. 5p. - Publication Year :
- 2015
-
Abstract
- The influence of different rainfall characteristics on pollutant wash-off was investigated in stormwater runoff from three road surfaces in a highly urbanized area of Shanghai, China. The relationships between rainfall characteristics and pollutant wash-off were analyzed using sectional analysis, an innovative concept of using sector parameters to investigate the relationship between the pollutant wash-off process and different sectors of the runoff hydrograph and rainfall hyetograph. Results indicated that the rainfall intensity of the initial phase of a rainfall event was critical to the magnitude of the first flush. Rainfall duration and the antecedent dry period also influenced pollutant load washed-off during intermediate and final phases of a rainfall event. No influence of rainfall depth on first flush was observed. Several rainfall characteristics played important roles in pollutant wash-off processes. These findings are critical for designing and implementing low impact development practices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258574
- Volume :
- 81
- Database :
- Academic Search Index
- Journal :
- Ecological Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 103053699
- Full Text :
- https://doi.org/10.1016/j.ecoleng.2015.04.016