Potential spreading risks and disinfection challenges of medical wastewater by the presence of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) viral RNA in septic tanks of Fangcang Hospital

被引：209

作者：

Zhang, Dayi ^{[1
]}

Ling, Haibo ^{[2
]}

Huang, Xia ^{[1
]}

Li, Jing ^{[3
]}

Li, Weiwei ^{[2
]}

Yi, Chuan ^{[2
]}

Zhang, Ting ^{[3
]}

Jiang, Yongzhong ^{[3
]}

He, Yuning ^{[4
]}

Deng, Songqiang ^{[4
]}

Zhang, Xian ^{[1
]}

Wang, Xinzi ^{[1
]}

Liu, Yi ^{[1
]}

Li, Guanghe ^{[1
]}

Qu, Jiuhui ^{[1
,5
]}

机构：

[1] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China

[2] Hubei Acad Environm Sci, Wuhan 430072, Peoples R China

[3] Hubei Ctr Dis Control & Prevent, Wuhan 430079, Peoples R China

[4] Res Inst Environm Innovat Tsinghua Suzhou, Suzhou 215163, Peoples R China

[5] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2020年 / 741卷

关键词：

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2); Disinfection; Cabin hospital; Disinfection by-products; BY-PRODUCTS; DRINKING-WATER; INACTIVATION; TRANSMISSION; TOXICITY; SURFACES; VIRUSES; WUHAN;

D O I：

10.1016/j.scitotenv.2020.140445

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The outbreak of coronavirus infectious disease-2019 (COVID-19) pneumonia raises the concerns of effective deactivation of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in medical wastewater by disinfectants. In this study, we evaluated the presence of SARS-CoV-2 viral RNA in septic tanks of Wuchang Cabin Hospital and found a striking high level of (0.5-18.7) x 103 copies/L after disinfection with sodium hypochlorite. Embedded viruses in stool particles might be released in septic tanks, behaving as a secondary source of SARSCoV-2 and potentially contributing to its spread through drainage pipelines. Current recommended disinfection strategy (free chlorine >= 0.5 mg/L after at least 30 min suggested by World Health Organization; free chlorine above 6.5 mg/L after 1.5-h contact by China Centers for Disease Control and Prevention) needs to be reevaluated to completely remove SARS-CoV-2 viral RNA in non-centralized disinfection system and effectively deactivate SARS-CoV-2. The effluents showed negative results for SARS-CoV-2 viral RNA when overdosed with sodium hypochlorite but had high a level of disinfection by-product residuals, possessing significant ecological risks. (c) 2020 Elsevier B.V. All rights reserved.

引用

页数：5

共 43 条

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