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中文摘要：
污水再生利用是解决水资源短缺问题的重要措施,制定科学合理的再生水生物学标准是保证其生物安全性的基本措施,但目前我国已有的再生水利用水质标准生物学指标体系不够健全,水质标准的科学依据也不十分明确,有待进一步完善。基于再生水回用的微生物健康风险定量评价方法,根据微生物的剂量-反应关系、暴露剂量计算方法和浓度分布等模型,确定了再生水生物学标准制定方法。以再生水回用于城市绿地灌溉为例,给出了再生水中典型病原微生物隐孢子虫和贾第鞭毛虫浓度限值的确定方法。
英文摘要：
Wastewater reuse is a significant way to resolve the problem of water shortage.Establishing scientific biological standards for reclaimed water is the basic measure to ensure its biological safety.But current biological index system for reclaimed water in China is not yet integrated.The scientific basis of water quality standards is not very clear and needs more complements.Based on Quantitative Microbial Risk Assessment（QMRA） method,this study set up a method for establishing biological standards for reclaimed water according to dose-response relationship,calculation method of exposure dose and distribution model of microorganism concentration.Taking urban green land irrigation as cast study,this paper determined the concentration limits of Cryptosporidium and Giardia in reclaimed water.
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