The development of a risk-based approach to managing the ecological impact of pollutants in highway runoff.
The development of a risk-based approach to managing the ecological impact of pollutants in highway runoff.
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DOI：
10.2166/wst.2008.269
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发表时间：
2008-05
期刊：
影响因子：
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通讯作者：
B. Crabtree;P. Dempsey;I. Johnson;M. Whitehead
中科院分区：
文献类型：
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作者：
B. Crabtree;P. Dempsey;I. Johnson;M. Whitehead
在英国，公路局负责战略道路网络。人们认识到，目前控制公路径流污染物的设计指南已经过时。目前正在进行一项研究方案，以便更好地了解公路径流中的污染物及其生态影响。本文总结了以下研究成果：(1)对24个站点在不同气候和交通条件下的公路径流污染物进行了监测；(2)制定潜在生态风险评价标准；(3)建立公路径流污染物浓度预测模型。数据收集和分析结果表明，污染物浓度与交通密度之间存在联系。公路径流中经常出现的一些污染物已被确定为构成最大的生态风险。针对这些污染物的可溶性形式，已经制定了急性影响的生态学标准。这些标准将与模型一起使用，以表明哪些地方可能需要径流处理以减轻生态风险。该模型和标准将用于制定改进的设计指导，通过确定需要径流处理的地点和程度，保护接收水免受公路径流污染物的污染。
In the UK, the Highways Agency is responsible for the strategic road network. It is recognised that current design guidance to control pollutants in highway runoff is out of date. A research programme is in progress to develop a better understanding of pollutants in highway runoff and their ecological impact. The paper summarises the outcome of a study to: (1) monitor pollutants in highway runoff under different climate and traffic conditions at 24 sites; (2) develop standards to assess potential ecological risks; and (3) develop a model to predict pollutant concentrations in highway runoff. Data collection and analysis of the resulting data have identified a link between pollutant concentrations and traffic density. A number of pollutants routinely present in highway runoff have been identified as posing the greatest ecological risk. Ecologically based standards for acute impacts have been derived for the soluble form of these pollutants. These standards will be used in conjunction with the model to indicate where runoff treatment may be required to mitigate ecological risk. The model and standards will be used to develop improved design guidance to protect receiving waters from pollutants in highway runoff by identifying where runoff treatment is required, and to what degree.