Ortiz-Hernández Joyce, Lucho-Constantino Carlos, Lizárraga-Mendiola Liliana, Beltrán-Hernández Rosa Icela, Coronel-Olivares Claudia, Vázquez-Rodríguez Gabriela
Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Km. 4.5, Carr. Pachuca-Tulancingo, C.P. 42184, Mineral de la Reforma, Hidalgo, Mexico.
Área Académica de Ingeniería, Km. 4.5, Carr. Pachuca-Tulancingo, C.P. 42184, Mineral de la Reforma, Hidalgo, Mexico.
Environ Sci Pollut Res Int. 2016 Dec;23(24):25156-25168. doi: 10.1007/s11356-016-7547-7. Epub 2016 Sep 28.
Urban runoff (UR) is a promising new resource that may alleviate growing tensions in numerous arid and semi-arid regions of the world. However, it is precisely in these zones that the available UR quality characteristics are scarcer. This work aims to evaluate a wide set of parameters to establish a detailed approach to both the quality of UR in a midsized city in Central Mexico and the feasibility of using UR to recharge aquifers. UR from an institutional land use site was sampled during wet and dry seasons and assessed for suspended solids, organic matter, nutrients, microorganisms, metals, and persistent organic chemicals (i.e., polycyclic aromatic hydrocarbons, PAH). The results were analyzed using multivariate statistical methods to identify relationships among the variables, the sampling sites and the seasons. The soil erosion and the leaching of materials due to the water flow through vegetated areas were identified as the most influencing factor on the quality of the site runoff in both dry and wet seasons. Additionally, data were more heterogeneous during the dry season, and higher pollutant concentrations were found both during the dry season and in more pervious zones. We consider UR a promising water source for recharging aquifers in arid and semi-arid zones if a program is implemented that can integrate an adequate runoff treatment system, soil protection, and other non-structural measures.
城市径流（UR）是一种很有前景的新资源，有望缓解世界众多干旱和半干旱地区日益紧张的水资源状况。然而，正是在这些地区，有关城市径流的可用质量特征却更为稀缺。这项工作旨在评估一系列参数，以便详细了解墨西哥中部一个中等规模城市的城市径流水质，以及利用城市径流回灌含水层的可行性。在雨季和旱季对一个机构用地的城市径流进行了采样，并对悬浮固体、有机物、养分、微生物、金属和持久性有机化学品（即多环芳烃，PAH）进行了评估。使用多元统计方法对结果进行分析，以确定变量、采样地点和季节之间的关系。在旱季和雨季，土壤侵蚀以及水流经植被区域导致的物质淋溶被确定为对场地径流质量影响最大的因素。此外，旱季的数据更为分散，在旱季和渗透性更强的区域发现了更高的污染物浓度。我们认为，如果实施一个能够整合适当径流处理系统、土壤保护及其他非结构性措施的项目，城市径流将是干旱和半干旱地区回灌含水层的一个有前景的水源。
