...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Food and Waterborne Parasitology >Risk-based management of drinking water safety in Australia: Implementation of health based targets to determine water treatment requirements and identification of pathogen surrogates for validation of conventional filtration
【24h】

Risk-based management of drinking water safety in Australia: Implementation of health based targets to determine water treatment requirements and identification of pathogen surrogates for validation of conventional filtration

机译：澳大利亚基于风险的饮用水安全管理：实施基于健康​​的目标，以确定水处理要求并鉴定病原体替代物，以验证常规过滤

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

摘要

The safety of drinking water in Australia is ensured using a risk management framework embedded within the Australian Drinking Water Guidelines (ADWG). This framework includes elements for hazard identification, risk assessment, risk mitigation, verification of barrier performance and monitoring for any changes to the hazards that influence source water quality. The next revision of the ADWG will incorporate Health-Based Targets (HBTs) for achieving microbiologically safe drinking water. This incorporates Quantitative Microbial Risk Assessment and the metric of Disability Adjusted Life Year (DALY) to define safety, with a target of 1×10 ?6 Disability Adjusted Life Year (1 microDALY) set as the maximum tolerable disease burden from drinking water, which in the case of Cryptosporidium is <1.3×10 ?5 oocysts/L. The resulting product water specification, in combination with knowledge of pathogen challenges in source waters, allows the determination of the treatment requirements to ensure public safety. The ADWG revision provides default removal values for Cryptosporidium for particular treatment processes, such as conventional coagulation and dual media filtration. However, these values are based on assumptions regarding treatment plant design, operation and water quality. To properly manage risk and demonstrate compliance with the guidelines, water utilities may need to validate treatment performance for Cryptosporidium removal. A particular limitation is the absence of Cryptosporidium surrogates for full-scale filter validation. This paper will provide an overview of risk-based management of drinking water safety in Australia, the development of health-based targets for microbial pathogens and the evaluation of Cryptosporidium surrogates for conventional coagulation and dual media filtration. Graphical abstract Display Omitted Highlights ? Used pilot-scale coagulation, sedimentation, granular media filter water treatment ? Compared the removals of Cryptosporidium oocysts and surrogates ? Pilot-scale treated water quality was comparable to full-scale treatment. ? Modified microspheres most similar to oocyst filtration removal ? Clostridium spores, algae and turbidity conservative indicators of oocyst removal ? Turbidity, algae have great potential as on-line indicators for oocyst removal.
机译：通过使用《澳大利亚饮用水准则》（ADWG）中嵌入的风险管理框架，可以确保澳大利亚的饮用水安全。该框架包括危害识别，风险评估，风险缓解，屏障性能验证以及监测危害水源水质的危害变化的要素。 ADWG的下一个修订版将纳入基于健康的目标（HBT），以实现微生物安全的饮用水。该方法结合了微生物定量风险评估和残疾调整生命年（DALY）指标来定义安全性，目标是将饮用水的最大可耐受疾病负担设置为1×10？6残疾调整生命年（1 microDALY），在隐孢子虫的情况下，<1.3×10 5个卵囊/ L。最终的产品水规格，再加上对源水中病原体挑战的了解，可以确定处理要求，以确保公共安全。 ADWG修订版提供了特定处理过程（例如常规混凝和双重培养基过滤）的隐孢子虫的默认去除值。但是，这些值基于与处理厂设计，运行和水质有关的假设。为了适当地管理风险并证明其符合准则，自来水公司可能需要验证去除隐孢子虫的处理性能。一个特殊的限制是缺乏用于全尺寸过滤器验证的隐孢子虫替代品。本文将概述澳大利亚基于风险的饮用水安全管理，制定基于健康的微生物病原体目标以及评估常规凝固和双重培养基过滤的替代隐孢子虫盐酸盐的评估。图形摘要显示省略的突出显示？采用中试规模的混凝，沉淀，颗粒介质过滤水处理？比较了隐孢子虫卵囊和代孕卵的清除率？中试处理后的水质与全尺寸处理相当。 ？改性微球与卵囊滤过去除最相似？梭状芽胞杆菌孢子，藻类和浊度去除卵囊的保守指标？浊度，藻类作为清除卵囊的在线指标具有巨大潜力。

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