Bioassay: A useful tool for evaluating reclaimed water safety.
Bioassay: A useful tool for evaluating reclaimed water safety.
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DOI：
10.1016/j.jes.2019.08.014
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发表时间：
2020-02
影响因子：
6.9
通讯作者：
Jianying Xu;Dongbin Wei;Feipeng Wang;C. Bai;Yuguo Du
中科院分区：
文献类型：
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作者：
Jianying Xu;Dongbin Wei;Feipeng Wang;C. Bai;Yuguo Du
污水再生利用是缓解淡水危机的有效途径。然而，再生水中残留的有毒污染物可能会导致潜在的风险回用，传统的水质标准难以保证再生水的安全。生物测定法能形象地反映水体中多种有毒物质的综合生物效应，是评价再生水安全性的有力工具。因此，在这项研究中，使用生物测定评价再生水的安全性的优点和缺点进行了比较，与传统的水质标准。虽然生物测定已被广泛用于描述再生水的毒性效应和再生技术的处理效率，但单一的生物测定不能反映再生水的复杂毒性，建议使用一组涉及多种生物效应的生物测定或具有特定毒性机制的体外试验。此外，为了评价再生水的安全性，基于生物测定结果，包括潜在毒理学，毒性单位分类系统，和潜在的生态毒性效应探针的各种方法进行了总结。特别推荐了基于多毒性效应生物测定组合的综合评价方法，作为评价再生水安全性的有效工具，有利于促进和保障再生水资源化的快速发展。
Wastewater reclamation and reuse has been proved to be an effective way to relieve the fresh water crisis. However, toxic contaminants remaining in reclaimed water could lead to potential risk for reuse, and the conventional water quality standards have difficulty guaranteeing the safety of reclaimed water. Bioassays can vividly reflect the integrated biological effects of multiple toxic substances in water as a whole, and could be a powerful tool for evaluating the safety of reclaimed water. Therefore, in this study, the advantages and disadvantages of using bioassays for evaluating the safety of reclaimed water were compared with those of conventional water quality standards. Although bioassays have been widely used to describe the toxic effects of reclaimed water and treatment efficiency of reclamation techniques, a single bioassay cannot reflect the complex toxicity of reclaimed water, and a battery of bioassays involving multiple biological effects orin vitrotests with specific toxicity mechanisms would be recommended. Furthermore, in order to evaluate the safety of reclaimed water based on bioassay results, various methods including potential toxicology, the toxicity unit classification system, and a potential eco-toxic effects probe are summarized as well. Especially, some integrated ranking methods based on a bioassay battery involving multiple toxicity effects are recommended as useful tools for evaluating the safety of reclaimed water, which will benefit the promotion and guarantee the rapid development of the reclamation and reuse of wastewater.