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首页> 外文期刊>International Journal of Environmental Research and Public Health >Removal of Escherichia coli and Faecal Coliforms from Surface Water and Groundwater by Household Water Treatment Devices/Systems: A Sustainable Solution for Improving Water Quality in Rural Communities of the Southern African Development Community Region
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Removal of Escherichia coli and Faecal Coliforms from Surface Water and Groundwater by Household Water Treatment Devices/Systems: A Sustainable Solution for Improving Water Quality in Rural Communities of the Southern African Development Community Region

机译：家用水处理设备/系统去除地表水和地下水中的大肠杆菌和粪便大肠菌群：改善南部非洲发展共同体地区农村社区水质的可持续解决方案

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There is significant evidence that household water treatment devices/systems (HWTS) are capable of dramatically improving microbially contaminated water quality. The purpose of this study was to examine five filters [(biosand filter-standard (BSF-S); biosand filter-zeolite (BSF-Z); bucket filter (BF); ceramic candle filter (CCF); and silver-impregnated porous pot (SIPP)] and evaluate their ability to improve the quality of drinking water at the household level. These HWTS were manufactured in the workshop of the Tshwane University of Technology and evaluated for efficiency to remove turbidity, faecal coliforms and Escherichia coli from multiple water source samples, using standard methods. The flow rates ranged from 0.05 L/h to 2.49 L/h for SIPP, 1 L/h to 4 L/h for CCF, 0.81 L/h to 6.84 L/h for BSF-S, 1.74 L/h to 19.2 L/h and 106.5 L/h to 160.5 L/h for BF The turbidity of the raw water samples ranged between 2.17 and 40.4 NTU. The average turbidity obtained after filtration ranged from 0.6 to 8 NTU (BSF-S), 1 to 4 NTU (BSF-Z), 2 to 11 NTU (BF), and from 0.6 to 7 NTU (CCF) and 0.7 to 1 NTU for SIPP. The BSF-S, BSF-Z and CCF removed 2 to 4 log10 (99% to 100%) of coliform bacteria, while the BF removed 1 to 3 log (90% to 99.9%) of these bacteria. The performance of the SIPP in removing turbidity and indicator bacteria (>5 log10, 100%) was significantly higher compared to that of the other HWTS (p < 0.05). The findings of this study indicate that the SIPP can be an effective and sustainable HWTS for the Southern African Development Community (SADC) rural communities, as it removed the total concentration of bacteria from test water, can be manufactured using locally available materials, and is easy to operate and to maintain.
机译：有大量证据表明，家用水处理设备/系统（HWTS）能够显着改善微生物污染的水质。这项研究的目的是检查五个过滤器[（生物砂过滤器标准（BSF-S）;生物砂过滤器沸石（BSF-Z）;桶式过滤器（BF）;陶瓷烛式过滤器（CCF）;以及浸银的多孔性壶（SIPP）]，并评估它们在家庭水平上改善饮用水水质的能力，这些饮用水是在茨瓦内工业大学的车间生产的，并评估了从多种水中去除混浊，粪便大肠菌和大肠杆菌的效率。源样品，采用标准方法，SIPP的流速范围为0.05 L / h至2.49 L / h，CCF的流速范围为1 L / h至4 L / h，BSF-S的流速范围为0.81 L / h至6.84 L / h，高炉水的浊度为1.74 L / h至19.2 L / h，106.5 L / h至160.5 L / h，原水样品的浊度为2.17至40.4 NTU，过滤后的平均浊度为0.6至8 NTU（BSF- S），1至4 NTU（BSF-Z），2至11 NTU（BF），SIPP从0.6至7 NTU（CCF）和0.7至1 NTU.BSF-S，BSF-Z和CCF被删除2至4 log10 （99％至100％）大肠菌，而BF去除了这些细菌的1-3 log（90％至99.9％）。与其他HWTS相比，SIPP在去除浑浊和指示细菌方面的性能（> 5 log10，100％）显着更高（p <0.05）。这项研究的结果表明，SIPP对于南部非洲发展共同体（SADC）的农村社区而言，可以成为一种有效且可持续的HWTS，因为它从测试水中去除了细菌的总浓度，可以使用当地可用的材料制造，并且易于操作和维护。

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