10th
International Rainwater Catchment Systems Conference
"Rainwater
International 2001"
Mannheim, Germany - September 2001
Section
1: Rainwater
Harvesting
in an Urban Context
Paper
1.3
The Quality and Major Influencing Factors of Runoff in Beijing's Urban
Area
Che Wu, Wang Huizhen, Li Junqi, Liu Hong, Meng Guanghui
Beijing Institute of Civil Engineering and Architecture
China
email: chewu812@sina.com
Introduction
Beijing is faced with dual pressure brought on by the shortage of water
resources and water environment pollution. To cope with this situation,
it is important to study the quality of the average annual runoff of about
200 million cubic meters in the urban area (Che, 2001).
We analyzed and studied the quality of the natural rainfall on roofs
and roads during the rainy season 1999-2000. The study shows that the
pollutants quantity of natural rainfall was relatively low and the water
quality was basically fine. The rainwater on roofs and roads showed serious
pollution, mainly organic pollution and suspended solid pollution. This
article, therefore, focuses its analysis on the two COD and SS indexes
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