Analysis of Runoff Pollution Characteristics in Rain Pipes on the Basis of Different CatchmentsReport as inadecuate




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With the development of urbanization, Non-point pollutions caused by runoff become the main pollution resource of the urban watershed. Two different catchments were selected as research objects, the pollutants flush and conveyance characteristics were analyzed on the basis of the two different catchments. The result showed that: pollutants concentration in trunk pipe was fluctuate with time elapse, many peaks were appeared, first flush phenomenon were not exist remarkably; there exist well correlation between pollutants, R2 among TN、TP、COD were varied from 0.7 to 0.8; The dissolved and non- dissolved pollutants were about 50% separately, the conveyance of dissolved pollutants approximate obey index decay process, and the conveyance of non-dissolved pollutants approximate flux profile process; Maximum value of pollutants in trunk pipe were deeply affected by rainfall intensity, and all appeared behind the peak of rainfall intensity.

KEYWORDS

Runoff pollution; First flush; Runoff catchments

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Author: Jian-long Wang, Wu Che, Bo-yuan Wang, Guo-qing Pan

Source: http://www.scirp.org/



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