Université Blida 1, Institute of Architecture and Urbanism (IAU), Observatory of City and Architecture for Urban and Spatial Mutations (OVAMUS), Blida, Algeria.
J Environ Manage. 2024 Nov;370:122466. doi: 10.1016/j.jenvman.2024.122466. Epub 2024 Sep 10.
Urban areas in Algeria are increasingly suffering from water scarcity due to climate change and rapid urbanization, prompting the government to introduce an intermittent water supply system. This situation requires households to store potable water during supply interruptions. This study investigates the potential of rainwater harvesting (RWH) to reduce the need for such storage in single-family homes in the municipality of Beni-Mared (north of Algeria). Through five simulated scenarios: "Current" which represents the existing situation without RWH; "Maximum" in which all available rainwater is captured; "Switch" in which the existing potable water storage tanks are used for rainwater; "Optimal" in which the size of the storage tanks and efficiency are balanced; and "Outdoor" in which the focus is on rainwater for external purposes such as watering. The results show that the "Maximum" scenario has the greatest potential, as it reduces the need for potable water storage by up to 84.5%, although it requires large and potentially expensive tanks. The "Optimal" scenario offered a practical solution in which a 2.7 m³ tank covers up to 33% of the storage. The "Switch" scenario, where existing tanks were repurposed, reduced storage requirements by 15.07%, while the "Outdoor" scenario, designed for external uses, achieved a more modest reduction of 5.85%-6.71%. These results demonstrate the importance of implementing an adapted RWH approach supported by a comprehensive development strategy, community involvement and financial support to effectively address water scarcity in Algeria.
阿尔及利亚的城市地区由于气候变化和快速城市化，越来越受到水资源短缺的困扰，促使政府引入了间歇性供水系统。这种情况要求家庭在供水中断期间储存饮用水。本研究调查了雨水收集（RWH）在减少贝尼迈拉德市（阿尔及利亚北部）单户家庭对这种储存的需求方面的潜力。通过五个模拟情景：“当前”代表没有 RWH 的现有情况；“最大”，其中捕获了所有可用的雨水；“切换”，其中使用现有的饮用水储存罐用于雨水；“最优”，其中平衡了储存罐的大小和效率；以及“户外”，其中重点是用于外部用途的雨水，如浇水。结果表明，“最大”情景的潜力最大，因为它可将饮用水储存需求减少多达 84.5%，尽管这需要大型且潜在昂贵的水箱。“最优”情景提供了一种实用的解决方案，其中 2.7 m³ 的水箱可覆盖高达 33%的储存需求。“切换”情景，即将现有水箱重新用于储存，可将储存需求减少 15.07%，而“户外”情景，专为外部用途设计，仅可减少 5.85%-6.71%。这些结果表明，实施支持全面发展战略、社区参与和财政支持的适应性雨水收集方法对于有效应对阿尔及利亚的水资源短缺至关重要。
