对多米尼加共和国博纳奥市混凝土生物砂滤池持续使用及其健康影响的评估。
An assessment of continued use and health impact of the concrete biosand filter in Bonao, Dominican Republic.
机构信息
Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, NC, USA.
出版信息
Am J Trop Med Hyg. 2011 Aug;85(2):309-17. doi: 10.4269/ajtmh.2011.09-0122.
Abstract
The biosand filter (BSF) is a promising point of use (POU) technology for water treatment; however there has been little follow-up of initial implementation to assess sustainability. The purpose of this study was to examine continued use, performance, and sustainability of previously implemented concrete BSFs in Bonao, Dominican Republic. Of 328 households visited and interviewed, 90% of BSFs were still in use after approximately 1 year since installation. Water-quality improvement, measured by fecal indicator bacteria reduction, was found to be 84-88%, which is lower than reductions in controlled laboratory studies but similar to other field assessments. In a short prospective cohort study comparing BSF to non-BSF households, odds of reported diarrheal disease in BSF households were 0.39 times the odds of reported diarrheal disease in non-BSF households. These results document high levels of sustained and effective concrete BSF use and associated improvements in water quality and health.
摘要
生物砂滤器（BSF）是一种有前途的现场（POU）水处理技术；然而，对于初始实施的后续评估可持续性的研究很少。本研究的目的是检查在多米尼加共和国博纳奥之前实施的混凝土 BSF 的持续使用、性能和可持续性。在访问和访谈的 328 户家庭中，安装后大约 1 年，仍有 90%的 BSF 在使用。水质改善，以粪便指示细菌减少来衡量，发现减少了 84-88%，这低于实验室对照研究中的减少，但与其他实地评估相似。在一项比较 BSF 和非 BSF 家庭的短期前瞻性队列研究中，BSF 家庭报告腹泻病的几率是非 BSF 家庭的 0.39 倍。这些结果证明了高水平的持续和有效的混凝土 BSF 使用以及与水质和健康相关的改善。
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