Ruiz-Pérez M R, Alba-Rodríguez M D, Marrero M
School of Building Engineering, Department of Architectural Constructions II, University of Seville, Av. Reina Mercedes 4, Seville 41012, Spain.
School of Building Engineering, Department of Architectural Constructions II, University of Seville, Av. Reina Mercedes 4, Seville 41012, Spain.
Water Res. 2022 Aug 1;221:118715. doi: 10.1016/j.watres.2022.118715. Epub 2022 Jun 7.
This publication presents a methodology for the evaluation of the water footprint of urban renewal projects. The indirect water footprint is obtained by adding together the embodied or virtual water of the materials incorporated in the 12-month project, while the direct footprint is mainly due to the green areas and rainwater collection system over its 40-year life span. The methodology, originally defined for the agricultural sector, is adapted to an urban system that includes gardens and sustainable urban drainage systems. In an innovative way, the present work analyses the amortisation of the indirect water footprint of the construction products by improvements in the city water cycle. The project involves street renewal with water-sensitive criteria, with five green areas, and road and pavement construction. The methodology identifies changes in garden designs, soil drainage, and rainwater-collecting systems in terms of blue, green, and grey water footprints. Five scenarios of a project in Seville, Spain are studied. The indirect water footprint of the project is 2.6 times higher than that in a standard project, but, due to annual savings of 65% in its direct water footprint, the breakeven point is reached in the 10th year.
本出版物介绍了一种评估城市更新项目水足迹的方法。间接水足迹是通过将12个月项目中所含材料的隐含或虚拟水相加得出的，而直接水足迹主要源于其40年使用寿命内的绿地和雨水收集系统。该方法最初是为农业部门定义的，现适用于包括花园和可持续城市排水系统的城市系统。本研究以创新的方式分析了通过改善城市水循环对建筑产品间接水足迹的摊销情况。该项目涉及以水敏感标准进行街道更新，包括五个绿地以及道路和人行道建设。该方法从蓝水、绿水和灰水足迹的角度识别花园设计、土壤排水和雨水收集系统的变化。研究了西班牙塞维利亚一个项目的五种情景。该项目的间接水足迹比标准项目高2.6倍，但由于其直接水足迹每年节省65%，在第10年达到收支平衡点。
