Seven-year performance of biosand filters in rural Rwanda

IF 1.6 4区 环境科学与生态学 Q3 WATER RESOURCES
Bethesda O'Connell, C. Olomofe, M. Quinn, Deborah Slawson, Théoneste Ntakirutimana, P. Scheuerman
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引用次数: 0

Abstract

Waterborne diseases remain a significant public health problem, and biosand filters (BSFs) are a common household water filtration method for improving drinking water quality to prevent diseases. The purpose of this study was to evaluate the effectiveness of BSFs over time in a rural Rwandan community. Sixteen BSFs were installed – eight in 2015 and eight in 2018. Influent and effluent samples were tested with Colilert Presence/Absence kits in 2015, 2017, 2018, 2019, and 2022. About 92.9% of filters were still in use in July 2022, but only 64.3% were functioning well, and 50% of effluent samples tested positive for fecal coliforms. A Kruskal–Wallis H test showed no statistically significant difference in effluent percent positive for fecal coliforms by filter age [χ2 (1) = 4.00, p = 0.41]. Recorded observations about each filter, such as rusted diffuser plates, may be useful for understanding the need for maintenance over time.
卢旺达农村生物沙过滤器的7年性能
水传播疾病仍然是一个重大的公共卫生问题,生物砂过滤器(BSF)是一种常见的家用水过滤方法,用于改善饮用水质量以预防疾病。本研究的目的是评估BSF在卢旺达农村社区的有效性。安装了16个BSF——2015年8个,2018年8个。2015年、2017年、2018年、2019年和2022年,使用大肠杆菌存在/不存在试剂盒对进水和出水样本进行了测试。2022年7月,约92.9%的过滤器仍在使用,但只有64.3%的过滤器运行良好,50%的污水样本的粪便大肠菌群检测呈阳性。Kruskal–Wallis H检验显示,不同过滤器年龄的粪便大肠菌群阳性率没有统计学上的显著差异[χ2(1)=4.00,p=0.41]。记录每个过滤器的观察结果,如生锈的扩散板,可能有助于了解长期维护的必要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
3.10
自引率
11.80%
发文量
58
审稿时长
16 weeks
期刊介绍: The Journal of Water, Sanitation and Hygiene for Development is a peer-reviewed journal devoted to the dissemination of high-quality information on the science, policy and practice of drinking-water supply, sanitation and hygiene at local, national and international levels.
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