Nguyen Xuan Cuong, Nguyen Thi Thanh Huyen, Bui Xuan-Thanh, Tran Xuan Vu, Tran Thi Cuc Phuong, Hoang Nhung Thi Tuyet, La Duc Duong, Chang Soon Woong, Ngo Huu Hao, Nguyen Dinh Duc
Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam.
Faculty of Environmental Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam.
Environ Sci Pollut Res Int. 2021 Dec;28(45):63589-63598. doi: 10.1007/s11356-020-11154-8. Epub 2020 Oct 17.
The failure of the centralized water supply system forced XY community to become more dependent on uncertain and unstable water sources. The results of surveying 50 households showed that 89.18% of total households depended on water collected from rivers, which contributed 58.3% of the total water volume used for the domestic demands. The average water volume consumed was 19.5 liters/person/day (l/p/d), and 86.5% of households used more than one source; 13.5% of households collected water only from rivers, and 45.94% of families had rainwater harvesting (RWH) for their activities (domestic water demand); however, RWH only provided 9.9% of total water consumption. In this study, basic methods were applied to calculate the storage tanks necessary to balance the water deficit created by drought months. Three levels of water demand (14, 20, and 30 l/p/d) can be the best choices for RWH; for a higher demand (40 and 60 l/p/d), small roof area (30-40 m), and many people (six to seven) per family, RWH might be impractical because of unsuitable rainfall or excessively large storage tanks.
集中供水系统的故障迫使XY社区更加依赖不确定和不稳定的水源。对50户家庭的调查结果显示，89.18%的家庭依赖从河流收集的水，这些水占家庭生活用水总量的58.3%。平均用水量为19.5升/人/天（l/p/d），86.5%的家庭使用多种水源；13.5%的家庭仅从河流取水，45.94%的家庭有雨水收集（RWH）用于家庭活动（生活用水需求）；然而，雨水收集仅提供总用水量的9.9%。在本研究中，应用基本方法计算平衡干旱月份造成的缺水所需的储水箱。三种用水需求水平（14、20和30升/人/天）可能是雨水收集的最佳选择；对于更高的需求（40和60升/人/天）、小屋顶面积（30 - 40平方米）以及每个家庭人口众多（六到七人）的情况，由于降雨不合适或储水箱过大，雨水收集可能不切实际。
