Stormwater quality performance of permeable interlocking concrete pavement receiving run-on from an asphalt traffic lane in a cold climate
Stormwater quality performance of permeable interlocking concrete pavement receiving run-on from an asphalt traffic lane in a cold climate
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寒冷气候下从沥青车道流过的透水联锁混凝土路面的雨水质量性能
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
J. Dorsey
中科院分区：
文献类型：
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作者：
A. Tirpak;R. Winston;Melissa Feliciano;J. Dorsey
城市已经转向渗透性路面作为一种工具，以减轻城市径流的有害影响。渗透性路面允许雨水渗透通过一系列的聚集层，在水通过暗渠或排水管排入原生土壤之前，污染物被过滤掉。本研究报告了美国俄亥俄州朱红的一个停车场的水质性能与渗透联锁混凝土路面改造。该实践于2015年建成，从沥青交通车道开始运行，并在监测开始前运行了2年。在15个月的监测期内，渗透性路面提供了显着减少沉积物和颗粒营养物质，这是通过在上骨料层过滤去除。尽管底层土壤排水不良，但径流量减少了26%，导致研究中几乎所有营养物质和重金属的负荷显着减少。径流和流出物组成的季节性变化进行了研究，表明在春季和秋季进行的恢复性维护有可能进一步改善所提供的做法，通过去除夹带的颗粒物从上聚集层和恢复系统的过滤能力的治疗。相关性分析显示，第一次刷新的颗粒氮物种，以及潜在的发生侵蚀性流动的聚合底基，导致在高强度降雨事件期间的泥沙浓度升高。这项研究的结果表明，渗透性路面的有效性几年后，建设，即使设计功能，以具体改善治疗没有实施和额外的运行路由到路面从相邻的不透水表面。调查结果还强调了及时维护这些做法的重要性，这可以通过全年清除季节性沉积的污染物来进一步改善其性能。
Cities have turned to permeable pavements as one tool to mitigate the detrimental effects of urban runoff. Permeable pavements permit rainfall to infiltrate through a series of aggregate layers, where pollutants are filtered out before the water discharges via an underdrain or exfiltrates into native soils. This study reports on the water quality performance of a parking area retrofitted with permeable interlocking concrete pavement in Vermilion, OH, USA. The practice was constructed in 2015, received run-on from an asphalt traffic lane and was operational for 2 years before the onset of monitoring. During the 15-month monitoring period, the permeable pavement provided significant reductions of sediment and particulate nutrients, which were removed via filtration in the upper aggregate layers. Despite poorly draining underlying soils, runoff volumes were reduced by 26%, leading to significant load reductions for nearly all nutrient and heavy metals in the study. Seasonal variations in runoff and effluent composition were investigated, showing that restorative maintenance performed in spring and fall has the potential to further improve the treatment provided by the practice by removing entrained particulates from the upper aggregate layers and restoring the filtering capacity of the system. Correlation analyses revealed a first flush of particulate nitrogen species, as well as the potential occurrence of erosive flows within the aggregate subbase which resulted in elevated sediment concentrations during high intensity rain events. Results from this study demonstrate the effectiveness of permeable pavements several years after construction, even when design features to specifically improve treatment were not implemented and additional run-on is routed onto the pavement from adjacent impervious surfaces. Findings also highlight the importance of timely maintenance of these practices, which could further improve their performance by removing seasonally deposited pollutants throughout the year.