PDF(Pubmed)
Abstract：
The novel SARS-CoV-2 is expanding internationally. While the current focus is on limiting its transmission from direct contact with infected patients and surfaces during the pandemic, the secondary transmission potential via sewage should not be underestimated, especially in low-income and developing countries with weak wastewater treatment technologies. Recent studies have indicated SARS-CoV-2 positivity also be detected in the feces of patients. Therefore, the risk of transmission and infection can be increased into sewage by the fecal-oral way, mainly in some parts of the globe with a high amount of open defecation. This review collected scattered data and recent studies about the direct and indirect effects of coronavirus in the water cycle. The direct impacts of COVID-19 on wastewater are related to the presence of the coronavirus and suitable viral removal methods in different phases of treatment in wastewater treatment plants. The indirect effects of COVID-19 on wastewater are related to the overuse of cleaning and disinfecting products to protect against viral infection and the overuse of certain drugs to protect against virus or novel mental problems and panic to COVID-19 and consequently their presence in wastewater. This unexpected situation leads to changes in the quality of wastewater and brings adverse and harmful effects for the human, aquatic organisms, and the environment. Therefore, applying effective wastewater treatment technologies with low toxic by-products in wastewater treatment plants will be helpful to prevent the increasing occurrence of these extra contaminants in the environment.
摘要：
新型SARS-CoV-2正在向国际扩展。虽然目前的重点是限制其在大流行期间直接接触感染患者和表面的传播，通过污水的二次传播潜力不可低估，特别是在污水处理技术薄弱的低收入和发展中国家。最近的研究表明，在患者的粪便中也可以检测到SARS-CoV-2阳性。因此,通过粪便-口腔的方式可以增加传播和感染的风险，主要是在全球的一些地方有大量的露天排便。这篇综述收集了有关冠状病毒在水循环中的直接和间接影响的零散数据和最新研究。COVID-19对废水的直接影响与冠状病毒的存在以及废水处理厂不同处理阶段的合适病毒去除方法有关。COVID-19对废水的间接影响与过度使用清洁和消毒产品以防止病毒感染以及过度使用某些药物以防止病毒或新的精神问题以及对COVID-19的恐慌以及因此它们在废水中的存在有关。这种意想不到的情况导致废水质量的变化，给人类带来不利和有害的影响，水生生物,和环境。因此,在污水处理厂中应用具有低毒性副产物的有效污水处理技术将有助于防止环境中这些额外污染物的增加。
