使用水安全计划方法评估乌干达布希尼供水质量的风险

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-11-09 DOI:10.2166/wpt.2023.193
Christopher Kanyesigye, Innocent Twesigye, Sara Marks, Charles Niwagaba, Robinah Kulabako, Giuliana Ferrero, Frank Kansiime
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引用次数: 0

摘要

摘要/ Abstract摘要:本研究评估了2017-2020年busshenyi供水系统环境和运行危险事件的影响。将2013年7月至2017年12月的月度二级水质数据与2018年1月至2020年11月每月采集的现场样本数据进行分析。分析了pH、浊度、总铁、游离氯和粪便大肠菌群。在实地访问期间,查明和评估了影响水源、处理和分配系统供水的危险事件和风险。控制措施在水安全计划制定期间确定,于2017年7月生效,并于2018年8月实施。配水系统水质浊度(93%)、总铁(99%)、剩余游离氯(90%)、粪便大肠菌群(96%)均达到国家标准。储配系统pH值低于国家标准(年平均范围5.5 ~ 6.7)。水源处的极端季节性天气变化、水源保护缺口、澄清剂、过滤器和化学品剂量管理相关的处理缺陷以及分配管理和维护缺口对水质产生了负面影响。建议改善水源保护、处理和配电网管理和维护,以实现可持续的系统和水质标准。
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Assessment of risks to the quality of water supplied in Bushenyi-Uganda using the water safety plan approach
Abstract This study assessed the effects of environmental and operational hazardous events on the Bushenyi water supply system over the period 2017–2020. Monthly secondary water quality data for the period July 2013–December 2017 were analyzed together with data from field samples collected monthly from January 2018 to November 2020. The parameters analyzed were pH, turbidity, total iron, free chlorine and faecal coliforms. Hazardous events and risks affecting the water supply at the source, treatment and distribution system were identified and assessed during the field visits. Control measures were determined during water safety plan development effective July 2017 and implemented effective August 2018. Quality of water in the distribution system met the national standards for turbidity (93%), total iron (99%), residual free chlorine (90%) and faecal coliforms (96%). pH in the storage and distribution system was below the national standard (annual mean range, 5.5–6.7). Water quality was negatively influenced by extreme seasonal weather variations at the source, source protection gaps, treatment deficiencies related to clarifier, filter and chemical dose management as well as distribution management and maintenance gaps. Improved source protection, treatment and distribution network management and maintenance are recommended for sustainable system and water quality standards.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
期刊最新文献
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