通过太阳能加热灭活饮用水中的粪便细菌。
Inactivation of fecal bacteria in drinking water by solar heating.
作者信息
Joyce T M, McGuigan K G, Elmore-Meegan M, Conroy R M
机构信息
Department of International Health and Tropical Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland.
出版信息
Appl Environ Microbiol. 1996 Feb;62(2):399-402. doi: 10.1128/aem.62.2.399-402.1996.
Abstract
We report simulations of the thermal effect of strong equatorial sunshine on water samples contaminated with high populations of fecal coliforms. Water samples, heavily contaminated with a wild-type strain of Escherichia coli (starting population = 20 x 10(5) CFU/ml), are heated to those temperatures recorded for 2-liter samples stored in transparent plastic bottles and exposed to full Kenyan sunshine (maximum water temperature, 55 degrees C). The samples are completely disinfected within 7 h, and no viable E. coli organisms are detected at either the end of the experiment or a further 12 h later, showing that no bacterial recovery has occurred. The feasibility of employing solar disinfection for highly turbid, fecally contaminated water is discussed.
摘要
我们报告了关于强烈赤道阳光对受大量粪便大肠菌群污染的水样产生热效应的模拟情况。水样被野生型大肠杆菌严重污染（初始菌量 = 20×10⁵ CFU/ml），被加热到存储在透明塑料瓶中的2升水样所记录的温度，并暴露在肯尼亚充足的阳光下（最高水温55摄氏度）。样本在7小时内被完全消毒，在实验结束时以及之后再过12小时均未检测到存活的大肠杆菌，表明没有发生细菌复苏。文中还讨论了对高度浑浊、受粪便污染的水采用太阳能消毒的可行性。
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