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Evaluating four measures of water quality in clay pots and plastic safe storage containers in Kenya

机译：评估肯尼亚的陶罐和塑料安全储藏容器中水质的四项措施

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摘要

Household water treatment with chlorine can improve microbiological' quality and reduce diarrhea. Chlorination is typically assessed using free chlorine residual (FCR), with a lower acceptable limit of 0.2 mg/L, however, accurate measurement of FCR is challenging with turbid water. To compare potential measures of adherence to treatment and water quality, we chlorinated recently-collected water in rural Kenyan households and measured total chlorine residual (TCR), FCR, oxidation reduction potential (ORP), and E. coli concentration over 72 h in clay and plastic containers. Results showed that 1) ORP served as a useful proxy for chlorination in plastic containers up to 24 h; 2) most stored water samples disinfected by chlorination remained significantly less contaminated than source water for up to 72 h, even in the absence of FCR; 3) TCR may be a useful proxy indicator of microbiologic water quality because it confirms previous chlorination and is associated with a lower risk of E. coli contamination compared to untreated source water; and 4) chlorination is more effective in plastic than clay containers presumably because of lower chlorine demand in plastic. Published by Elsevier Ltd.
机译：家用氯气处理水可以改善微生物质量并减少腹泻。氯化通常使用游离氯残留量（FCR）进行评估，可接受的下限为0.2 mg / L，但是，对于混浊的水，准确测量FCR颇具挑战性。为了比较遵守处理和水质的潜在措施，我们对肯尼亚农村家庭最近收集的水进行了氯化处理，并测量了粘土中72小时内的总氯残留量（TCR），FCR，氧化还原电位（ORP）和大肠杆菌浓度和塑料容器。结果表明：1）ORP可以用作长达24小时的塑料容器中氯化的有用替代剂； 2）即使没有FCR，大多数经过氯化消毒的存储水样品在72小时内仍比源水受到的污染要少得多。 3）TCR可能是微生物水质的有用指标，因为它证实了先前的氯化作用，并且与未经处理的原水相比，具有较低的大肠杆菌污染风险； （4）氯化塑料在塑料中比粘土容器更有效，大概是因为塑料中的氯含量较低。由Elsevier Ltd.发布

著录项

  • 来源
    《Water Research》 |2016年第1期|312-319|共8页
  • 作者

    Murphy Jennifer L.; Ayers Tracy L.; Knee Jacqueline; Oremo Jared; Odhiambo Aloyce; Faith Sitnah H.; Nyagol Ronald O.; Stauber Christine E.; Lantagne Daniele S.; Quick Robert E.;

  • 作者单位

    Ctr Dis Control & Prevent, Waterborne Dis Prevent Branch, Div Foodborne Waterborne & Environm Dis, Atlanta, GA 30329 USA;

    Ctr Dis Control & Prevent, Waterborne Dis Prevent Branch, Div Foodborne Waterborne & Environm Dis, Atlanta, GA 30329 USA;

    Ctr Dis Control & Prevent, Waterborne Dis Prevent Branch, Div Foodborne Waterborne & Environm Dis, Atlanta, GA 30329 USA;

    Safe Water & AIDS Project, Kisumu, Kenya;

    Safe Water & AIDS Project, Kisumu, Kenya;

    Safe Water & AIDS Project, Kisumu, Kenya;

    Safe Water & AIDS Project, Kisumu, Kenya;

    Georgia State Univ, Atlanta, GA 30303 USA;

    Tufts Univ, Dept Civil & Environm Engn, Boston, MA 02111 USA;

    Ctr Dis Control & Prevent, Waterborne Dis Prevent Branch, Div Foodborne Waterborne & Environm Dis, Atlanta, GA 30329 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Chlorination; Household water treatment; Safe water storage;

    机译：氯化;家庭水处理;安全储水;

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