Effect of antecedent dry weather period on urban storm runoff pollution load

Twelve storm events were surveyed at Shilipu catchment in Wuhan City through three-year monitoring regime. The flow discharges, total suspended solids (TSS), chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) in runoff were measured to study the mechanism of urban stormwate...

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Bibliographic Details
Published inHuanjing kexue Vol. 28; no. 10; p. 2287
Main Authors Li, Li-qing, Yin, Cheng-qing, Kong, Ling-li, He, Qing-ci
Format Journal Article
LanguageChinese
Published China 01.10.2007
Subjects
China
Cities
Environmental Monitoring
Nitrogen - analysis
Phosphorus - analysis
Rain
Water Movements
Water Pollutants, Chemical - analysis
Weather
China
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Summary:Twelve storm events were surveyed at Shilipu catchment in Wuhan City through three-year monitoring regime. The flow discharges, total suspended solids (TSS), chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) in runoff were measured to study the mechanism of urban stormwater runoff pollution. The relationship between the event pollution load and the antecedent dry weather period was identified to discuss the influence of the urban surface sanitation management, operation of sewer pipe maintenance and rainfall characteristics on the urban stormwater runoff pollution. It was found that the antecedent dry weather period and runoff amount were the important determining factors in the generation of urban stormwater runoff pollution. The event pollution load was positively correlated to the antecedent dry weather period between two rainfall events (R2 = 0.95, p < 0.01). It was the most important hydrological factor influencing the events pollution loads. The best regression equation to est
ISSN:0250-3301