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Eco-friendly management of enteroviruses in wastewater

机译：废水中肠病毒的生态友好管理

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The wastewater treatment facility in El-Manzala (sedimentation basins followed by vegetated cells) was investigated to evaluate its performance as a low cost treatment facility in managing viral pollution. Sedimentation basins are considered to be physical treatment, while vegetated cells are considered as biological treatment. Enteroviruses were detected and determined using two techniques, cell culture as infectivity assay and real time reverse transcriptase-polymerase chain reaction (real time RT-PCR) as a molecular biological technology. The results revealed that the wastewater treatment facility in El-Manzala showed good performance under Egyptian climatic conditions. The aquatic macrophytes system (biological treatment) showed better performance compared to the sedimentation basins (physical treatment) in removing viral loads. Enteroviruses load at the wetland inlet ranged between 50 and 100% as viral infectivity (VI) by cell culture, and between 4.9×10 4 and 59.5×10 5 gene copies (GC) by real time RT-PCR. The virus load after sedimentation basins ranged between 25 and 50% as VI and between 3.7×10 2 and 4.5×10 4 GC, while after the biological treatment recorded 0% as VI and between 0 and 2 GC. An empirical model was developed to describe the relationship between the quantity of enteroviruses using molecular biology and infective assay as a predictor variable. The present study concluded that the wastewater treatment wetland in El-Manzala can be considered as an effective facility in reducing viral contamination of the Bahr El-Baqar drainage water.
机译：对El-Manzala的废水处理设施（沉淀池，然后是植物细胞）进行了调查，以评估其作为管理病毒污染的低成本处理设施的性能。沉淀池被认为是物理处理，而植被细胞被认为是生物处理。使用两种技术检测和确定肠病毒，一种是细胞培养作为传染性检测方法，另一种是实时逆转录聚合酶链反应（实时RT-PCR）作为分子生物学技术。结果表明，在埃及气候条件下，曼萨拉的废水处理设施表现良好。与沉积池（物理处理）相比，水生植物系统（生物处理）在去除病毒负荷方面表现出更好的性能。通过细胞培养，肠病毒在湿地入口的病毒载量（VI）介于50％至100％之间，实时RT-PCR介于4.9×10 4和59.5×10 5个基因拷贝之间（GC）。沉淀池后的病毒载量为VI，介于25％至50％之间，而GC为3.7×10 2至4.5×10 4 GC，经过生物处理后，VI为0％，介于0至2 GC之间。建立了一个经验模型来描述使用分子生物学和感染性分析作为预测变量的肠道病毒数量之间的关系。本研究得出的结论是，可以将El-Manzala的废水处理湿地视为减少Bahr El-Baqar排水中病毒污染的有效设施。

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