Influent, as opposed to activated sludge, is more suitable for SARS-CoV-2 surveillance in wastewater treatment plants

IF 12.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2024-12-27 DOI:10.1016/j.watres.2024.123038

Zhou-Hua Cheng , Ji Li , Hui Zhang , Dong-Feng Liu , Han-Qing Yu

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Abstract

Wastewater surveillance programs based at wastewater treatment plants (WWTPs) have been widely implemented, becoming a crucial measure for public health. Recently, the scope of monitoring has expanded from influent wastewater to include primary settled solids and activated sludge. The effectiveness of monitoring primary settled solids has been widely validated, but the suitability of activated sludge as a monitoring target remains unclear. In this work, we investigated the total amount distribution coefficients of SARS-CoV-2 RNA in both solid and liquid fractions of influent and biological treatment process in WWTPs. Capitalizing on the strategic timing of policy adjustments in China, we conducted a quantitative analysis of the SARS-CoV-2 monitoring results over a three-month span during the first large-scale COVID-19 outbreak from three WWTPs in Hefei city, China. Importantly, in the monitoring of activated sludge, we observed a significant delayed effect, with the viral peak occurring 1 to 2 weeks later than in the influent. In addition, we also reveal a significant correlation between the abundance of SARS-CoV-2 in influent and urban resident behaviors, providing novel insights into the pandemic's dynamics. Collectively, this work demonstrates that influent sample is more appropriate for wastewater surveillance compared to sludge sample.

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与活性污泥相比，进水更适合污水处理厂的SARS-CoV-2监测

基于污水处理厂（WWTPs）的废水监测项目已经广泛实施，成为公共卫生的重要措施。最近，监测的范围已经从进水废水扩大到包括初级沉淀固体和活性污泥。监测初级沉淀固体的有效性已得到广泛验证，但活性污泥作为监测目标的适用性尚不清楚。在这项工作中，我们研究了SARS-CoV-2 RNA在污水处理厂进水固体和液体组分以及生物处理过程中的总量分布系数。利用中国政策调整的战略时机，我们对中国合肥市三个污水处理厂首次大规模暴发COVID-19期间为期三个月的SARS-CoV-2监测结果进行了定量分析。重要的是，在对活性污泥的监测中，我们观察到明显的延迟效应，病毒峰值出现的时间比进水晚1至2周。此外，我们还揭示了河流中SARS-CoV-2的丰度与城市居民行为之间的显著相关性，为大流行的动态提供了新的见解。总的来说，这项工作表明，与污泥样品相比，进水样品更适合于废水监测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.