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HUMAN HEALTH-BASED CHEMICAL GUIDELINES IN PURIFIED RECYCLED WATER

机译：净化循环水中基于人体健康的化学指南

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A framework has been developed to inform the public health risk assessment process for indirect potable reuse schemes. A stepwise framework has been designed to 1) prioritise chemicals in recycled water using a risk-based approach; and 2) incorporate chemical characteristics and the natural barrier when guideline exceedances are detected. Triggers in the framework include method detection limits exceeding health guidelines, chemicals considered persistent/bioaccumulative/toxic and chemicals detected routinely for which it is possible to produce a probability distribution function.rnOf the 468 chemicals monitored in the purified recycled water scheme of South-East Queensland, only 4% were classed as Category 1. Of these 20 chemicals, 16 were included in Category 1 due to method detection limits exceeding the Queensland Public Health Regulation. Examples are provided for specific chemicals to illustrate triggers in the assessment process and the benefits of the natural barrier in reducing water concentrations. Further work is required to fully integrate chemical fate and reservoir hydrodynamic models with the assessment framework.
机译：已经开发了一个框架，用于间接饮用重复利用计划的公共卫生风险评估过程。设计了一个逐步框架，以：1）使用基于风险的方法对循环水中的化学品进行优先排序；和2）在检测到超出准则时纳入化学特性和自然屏障。框架中的触发因素包括方法检测限制超过健康准则，被认为具有持久性/生物蓄积性/毒性的化学药品以及常规检测出的可能产生概率分布函数的化学药品。东南净化纯净水计划中监测的468种化学药品昆士兰州只有4％被归类为1类。在这20种化学药品中，由于方法检出限超过了昆士兰州公共卫生条例，因此16种被归入1类。提供了针对特定化学品的示例，以说明评估过程中的触发因素以及天然屏障在降低水浓度中的益处。需要进一步开展工作，以将化学归宿和储层水动力模型与评估框架完全整合。

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