scholarly journals Pollutant first flush identification and its implications for urban runoff pollution control: a roof and road runoff case study in Beijing, China

2021 ◽  
Author(s):  
Wei Zhang ◽  
Juan Li ◽  
Huichao Sun ◽  
Wu Che
Keyword(s):  
Pollution Control ◽  
Urban Runoff ◽  
New Method ◽  
Particulate Phosphorus ◽  
First Flush ◽  
Road Runoff ◽  
Asphalt Road ◽  
Runoff Pollution Control ◽  
Beijing China ◽  
Runoff Pollution

Abstract First flush is a common phenomenon in urban runoff pollution. Typical cement roof and asphalt road runoff in Beijing, China were monitored for 2 years. Based on the M(v) curve, the suspended solids (SS), chemical oxygen demand (COD), total phosphorus (TP) and particulate phosphorus in cement roof runoff presented a stronger first flush than those in asphalt road runoff. The first flush volume (VFF) of SS, COD, total nitrogen (TN) and TP in asphalt road runoff differed slightly from the cement roof. There were also differences in the first flush assessment depending on which method was used. We proposed a new method based on the runoff depth versus pollutant cumulative mass curve. According to the national standards in China (VFF = 3 mm), various masses of different pollutants, such as 91.42 ± 9.80% (cement roof) and 78.49 ± 19.41% (asphalt road) of SS and 86.85 ± 13.54% (cement roof) and 72.80 ± 25.79% (asphalt road) of COD, can be effectively controlled, but our mass control efficiencies were 55.91%–66.65% when VFF = 1 mm. The new method proposed in this study provides an alternative approach for assessing runoff pollution control efficiency of different VFF.

Assessment of treatment systems for highway runoff pollution control in Portugal

2009 ◽  
Vol 59 (9) ◽  
pp. 1733-1742 ◽  
Author(s):  
A. E. Barbosa ◽  
J. N. Fernandes
Keyword(s):  
Environmental Protection ◽  
Environmental Impacts ◽  
Pollution Control ◽  
Management Decisions ◽  
Highway Runoff ◽  
Maintenance Costs ◽  
A Priority ◽  
Runoff Pollution Control ◽  
Future Practice ◽  
Runoff Pollution

Treatment systems for highway runoff pollution control are now common structures for environmental impacts reduction in Portugal. Such systems must be monitored and its performance periodically assessed, in order to understand if they are accomplishing the targets for environmental protection. Wise management decisions must incorporate the soundness of the project, the construction and maintenance costs, and the ability of the system to reduce the pollution to the level required for environmental protection. To gather, organize and analyse all the existing information concerning the constructed treatment systems, their operation, maintenance and efficiency were understood as a priority by the Portuguese Roads' Institute. The authors of this article were responsible for this 3 years study that finished in May 2008. A total of 27 different systems, corresponding to 13 different project types, located in different places in Portugal have been characterized and evaluated. Several conclusions could be drawn from the evaluation and recommendations were produced concerning the project, the construction and operation phases and the monitoring activities. The recommendations concern tasks to be performed and information that should be gathered and presented to the Portuguese Road's Institute. It is expected that these indications will contribute to improve the future practice in Portugal.

Discussion about initial runoff and volume capture ratio of annual rainfall

2016 ◽  
Vol 74 (8) ◽  
pp. 1764-1772 ◽  
Author(s):  
Kun Zhang ◽  
Wu Che ◽  
Wei Zhang ◽  
Yang Zhao
Keyword(s):  
Pollution Control ◽  
Urban Areas ◽  
Annual Rainfall ◽  
Rainfall Events ◽  
Capture Ratio ◽  
Design Rainfall ◽  
Rainfall Depth ◽  
Runoff Pollution Control ◽  
The Relationship ◽  
Runoff Pollution

In recent years, runoff pollution from urban areas has become a major concern all over the world. But there exists a worldwide confusion about how much stormwater should be captured for the purpose of runoff pollution control. Furthermore, the construction cost and pollution control efficiency are closely linked with the size of stormwater facilities, which is then related to the first flush (FF) phenomenon and volume capture ratio of annual rainfall (VCRa). Based on this background, analysis of the random and changeable characteristics of the occurrence of FF was carried out first, which was proved to vary with catchment characteristics and pollutant types. Secondly, the distribution of design rainfall depth toward 85% VCRa in China and its causes have been analyzed. Thirdly, the relationship between initial runoff and VCRa has been studied at both conceptual and numerical levels, and the change rule of VCRa along with design rainfall depth in different regions has been studied. The limitation of initial runoff has been illustrated from the perspective of runoff characteristics of single rainfall events in the first part, and from the perspective of regional differences in the two subsequent parts.

scholarly journals Study on purification effect of infiltration materials to pavement runoff pollution

2018 ◽  
Vol 53 ◽  
pp. 04045
Author(s):  
Xueling Xu ◽  
Aihong Kang ◽  
Zhingping Lu ◽  
Keke lou ◽  
Changjiang Kou
Keyword(s):  
Pollution Control ◽  
Suspended Solids ◽  
Control Measure ◽  
Low Impact Development ◽  
Purification Process ◽  
Purification Efficiency ◽  
Three Stages ◽  
Runoff Pollution Control ◽  
Runoff Pollution

The concentrations of pollutants in pavement runoff are higher than those in other surface runoff normally, which causes serious problems in protecting the environment of receiving rivers and soils. According to the concept of low impact development (LID), a pavement runoff pollution control measure was developed by using infiltration structure. In order to infiltration structure play a superior role in the control of pavement runoff pollution, purification capacity of four typical infiltration materials was tested. Then, long-term purification efficiency of infiltration materials was explored to suspended solids. Besides, microscopic observation was performed on infiltration materials. Results indicated that purification effects of infiltration materials were significantly different. The purification process can be divided into three stages, which ware "rapid upgrading ", "slow upgrading " and "slow reduction ". Finally, Infiltration materials mainly have two modes to intercept runoff pollutants, which were pore adsorption and mechanical interception of the gap between materials.

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