将中水回用作为农村供水系统水资源综合管理措施的技术和经济影响

Water Supply Pub Date : 2024-05-03 DOI:10.2166/ws.2024.099
Irina Angelova, Dimiter Alitchkov, Viden Radovanov
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引用次数: 0

摘要

中水回用已成为传统供水系统的一种替代方案,尤其是在非饮用水使用(如花园和草地灌溉)占主导地位的地区。本研究评估了原水水质不符合饮用水标准、需要进行复杂处理的农村地区小型供水系统的回用足迹。家庭中潜在雨水、浅灰色、灰色和生活废水的单独回用设施可使非饮用水自来水用量减少达 60%,家庭每年的供水费用减少达 93 欧元/户。安装单独的雨水和含灰废水共同回用设施所需的投资成本最高,但该方案的运营成本比所有其他方案低 15% 至 20%。由于实施了这些措施,饮用水处理厂的处理能力降低了,从而使居民区饮用水供应的总运营成本节约了 48% 至 58%。如果雨水和含灰废水同时回用,小型供水系统的投资回收期最短,经济效益最好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Technical and economic impact of water reuse as an integrated water resource management measure in rural water supply systems
Water reuse becomes an alternative in the conventional water supply systems, especially in regions where nonpotable use of drinking water, as for garden and grass irrigation, is predominant. This study evaluates the footprint of reuse on small water supply systems in rural areas, where raw water quality does not meet the drinking water standards, and complicated treatment is needed. Individual facilities for the reuse of potential rainwater, light gray, gray, and domestic wastewater in the households could lead to a decrease in nonpotable tap water use up to 60% and a decrease in households' annual expenses for water supply up to 93 €/household. The installation of individual facilities for common reuse of rainwater and gray wastewater requires the highest investment costs, but the optioǹs operational costs are between 15 and 20% lower than all other options considered. The drinking water treatment plant capacity reduction due to measures’ implementation enables from 48 up to 58% saving in the total operational costs for drinking water supply in the settlement. The shortest payback period and best economic impact of reuse for small-scale water supply systems are observed if rainwater and gray wastewater are reused together.
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