Variations of Concentration Characteristics of Rainfall Runoff Pollutants in Typical Urban Living Areas

Based on a typical residential area, this paper studies the characteristics of pollutant concentration changes in two rainfall runoffs and the first flush effect of rainfall. In rainfall runoff, the concentrations of seven pollutants (COD Mn , TN, DTN, NH 3 -N, TP, DTP, and PO 4 3− ) increased durin...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 2021-04, Vol.106 (4), p.608-613
Main Authors: Xu, Jie, Wu, Xiaodong, Ge, Xuguang, Tian, Ying, Ma, Xiaochan, Li, Yunmei, Xu, Xiaoguang, Li, Zhichun
Format: Article
Language:English
Subjects:
Ammonia
Aquatic Pollution
China
Cities
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Monitoring
Environmental Pollutants
Household wastes
Pollutants
Pollution
Pollution control
Pollution levels
Rain
Rainfall
Rainfall-runoff relationships
Residential areas
Runoff
Sewage
Soil Science & Conservation
Urban runoff
Waste Water Technology
Water Management
Water Movements
Water Pollutants, Chemical - analysis
Water pollution
Water Pollution Control
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Summary:Based on a typical residential area, this paper studies the characteristics of pollutant concentration changes in two rainfall runoffs and the first flush effect of rainfall. In rainfall runoff, the concentrations of seven pollutants (COD Mn , TN, DTN, NH 3 -N, TP, DTP, and PO 4 3− ) increased during the initial rainfall period and decreased in the later period. Rainfall causes the erosion of pollutants on the underlying surface so that water pollution begins when rainfall runoff occurs, and the pollution level drops over time. The seven pollutants all experience this first flush effect, of which, rainfall has the strongest scouring effect on NH 3 -N produced by domestic sewage. The significant excess of pollutants in rainfall runoff should be considered by management departments. In addition, the existence of the first flush effect makes it possible in theory to partially intercept rainfall runoff to control water pollution, thereby reducing the cost of pollution control.
ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-021-03110-0