• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Biological Sciences >Efficiency and Applicability of Low Cost Home-based Water Treatment Strategies in a Rural Context
【24h】

Efficiency and Applicability of Low Cost Home-based Water Treatment Strategies in a Rural Context

机译：农村背景下低成本家庭水处理策略的效率和适用性

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Background and Objective: Most African communities living in rural and peri-urban areas lack access to safe drinking water. As a result, they use surface waters or harvest tap or rain water in storage containers. Such waters are not safe for human consumption and present great health risks for the consumers. In this study, home-based water treatment strategies were directed for use at household level to disinfect the water at point of use. Materials and Methods: Household bleach, boiling pot and common fabrics available in households were used to study chlorination, boiling and cloth filtration for cost and effectiveness in removing bacteria from river and tank waters for application in rural communities. Results: Two minutes of rolling boil eliminated bacteria from contaminated water with same efficiency as 5 and 10 min of continuous boiling. Household chlorine bleach was applied to contaminate water at the recommended proportion of 5 mL: 20 L of water. Although residual chlorine was detectable up to 8 days of treatment, the germicidal effect of chlorine lasted beyond 3 weeks of treatment. This had a direct impact on re-dosing of stored water and probable formation of disinfection by-products. Cloth filtration improved the clarity and colour and not the microbiological quality of the surface waters. Entrapment of bacteria required filter material with pore sizes of 0.4 μ or less because of their small sizes. Conclusion: Home based water treatment strategies have become significant for management of the quality of available water for the water stressed communities. Cost, efficacy and longevity are empirical elements which determine their adoption and implementation.
机译：背景和目标：生活在农村和城市周边地区的大多数非洲社区都无法获得安全的饮用水。结果，他们在储存容器中使用地表水或收获自来水或雨水。这样的水对于人类食用是不安全的，并且给消费者带来极大的健康风险。在这项研究中，针对家庭使用的水处理策略针对家庭使用，以在使用时对水进行消毒。材料和方法：使用家用漂白剂，沸腾锅和家用常用织物研究氯化，沸腾和滤布的成本和效果，以去除河水和储水罐中的细菌，以用于农村社区。结果：2分钟的滚沸煮沸可以从污水中清除细菌，其效率与连续沸腾5分钟和10分钟相同。建议使用家用氯漂白剂对水进行污染处理，建议比例为5毫升：20升水。尽管在处理8天之内仍可检测到残留的氯，但氯的杀菌作用持续了3周以上。这直接影响了存储水的重新配量以及可能形成的消毒副产物。滤布改善了地表水的透明度和颜色，而不是其微生物质量。细菌的捕获由于其尺寸小而需要孔径小于或等于0.4μ的过滤材料。结论：基于家庭的水处理策略对于管理缺水社区的可用水质量已变得非常重要。成本，功效和寿命是决定其采用和实施的经验因素。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号