{"id":11668,"date":"2020-04-13T23:08:36","date_gmt":"2020-04-13T15:08:36","guid":{"rendered":"https:\/\/www.envguide.com\/?p=11668"},"modified":"2020-04-14T23:10:46","modified_gmt":"2020-04-14T15:10:46","slug":"the-testing-process-reveals","status":"publish","type":"post","link":"https:\/\/us.envguide.com\/the-testing-process-reveals\/","title":{"rendered":"The Testing Process Reveals the Transmission of the COVID-19 from Wards to the Sewage System"},"content":{"rendered":"
The article was reproduced with permission from the Journal of Water and Wastewater Engineering, and EnvGuide Team translated the Chinese article into English Version.<\/em><\/p>\n Background<\/strong><\/p>\n The environmental characteristics of transmission of the new coronavirus (COVID-19) have become a topic of concern for all parties involved in the prevention and control of the epidemic. Water-borne environments are not only an important carrier for virus transmission but also a major receptor for secondary environmental risks and ecological damage caused by epidemic prevention and control. Relevant scientific data is extremely lacking for whether the urban drainage pipeline network will become a hiding place for COVID-19 and form a transmission route for residual viruses, as well as whether there are hidden dangers in the sewage treatment plant<\/u>. It is urgent to investigate and pay attention to these questions.<\/p>\n Academician Xu Zuxin, from School of Environmental Science and Engineering at Tongji University, was responsible for the special research task of \u201cControl Strategy for Potential Transmission Risk Sources of Urban Sewage Collection and Treatment Systems<\/u>\u201d, conducting an assessment of the potential risks of urban drainage systems, in order to provide empirical data and collaboratively control the spread of the epidemic and secondary environmental risks.<\/p>\n <\/p>\n Academician Xu Zuxin’s team, with the strong support of the Shanghai Public Health Clinical Center and other relevant units, selected the drainage pipelines at the designated quarantine hotel in Shanghai, the designated hospital for patients with COVID-19, and the urban sewage treatment plant at the end. The specific sampling points include wards, disinfection facilities, municipal pipeline networks, and sewage treatment plants<\/u>. The samples from the COVID-19 patient centralized treatment hospital were taken from the ward drain and the sewage disinfection station drain (4 samples at each point); the samples of the suspected patient quarantine hotel were taken from sewage collection wells outside the hotel, with a total of 6 samples; in the municipal sewage pipeline network, samples were taken from inspection wells along the line, with 6 samples taken from each point; in the sewage treatment plant, samples were taken from the water inlet and outlet with 6 samples from each sampling point. A total of 44 samples are shown in Table 1<\/strong> and Figure 1<\/strong>.<\/p>\n Table 1.<\/strong> Sampling point settings and number of samples<\/p>\n Quarantine Hotel<\/td>\n <\/p>\n Figure 1.<\/strong> Results of sampling points on March 11<\/p>\n <\/p>\n Samples were then sent to the Scientific Research Center of Shanghai Public Health Center Laboratory for analysis. With the primers and probe sequences of the new coronavirus recommended by the Chinese Center for Disease Prevention, 1-2 ml of environmental samples were taken, and RNA was extracted using a universal biological automated nucleic acid sequence extractor along with real-time fluorescent RT-PCR technology to determine the new coronavirus nucleic acid sequence.<\/p>\n <\/p>\n The analysis of the results of 44 samples of the new coronavirus nucleic acid sequence is as follows:<\/p>\n <\/p>\n <\/p>\n <\/p>\n Result: Fecal sewage from patients with coronavirus may distribute the virus into the urban drainage system. Normal sewage disinfection methods and doses can effectively inactivate coronavirus.<\/strong><\/p>\n Therefore, the following suggestions are made:<\/p>\n <\/p>\n <\/p>\n <\/p>\n A COVID-19 Centralized Treatment Hospital in Shanghai<\/p>\n Detection points along the drainage pipeline and of sewage treatment plant.<\/p>\n Detection point of a certain quarantine hotel in Shanghai<\/p>\n <\/p>\n EnvGuide, an environmental information & e-commerce\u00a0platform, was developed by the US-China Environmental Education Foundation (UCEEF), sponsored by the US Department of Commerce (USDOC) International Trade Administration (ITA) through its Market Development Cooperator Program (MDCP) and donations from readers like you.<\/p>\n The EnvGuide\u00a0platform is a bridge between the United States and China so that environment-related organizations are able to share the industry\u2019s latest environmental advice, technologies, and instrumentation\/equipment application on the platform; US environmental products can be introduced to China.\u00a0\u00a0For more information please visit EnvGuide\u00a0Website.<\/p>\n","protected":false},"excerpt":{"rendered":"\n
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\n Sampling point<\/td>\n Number of the sampling point<\/td>\n Sampling points and samples<\/td>\n Test items<\/td>\n Notes<\/td>\n<\/tr>\n \n <\/p>\n 1*6<\/td>\n Sediment samples from outdoor drainage wells<\/td>\n COVID-19<\/td>\n The toilet is disinfected with chlorine tablets<\/td>\n<\/tr>\n \n COVID-19 Hospital<\/td>\n 2*4<\/td>\n Water out of ward drainage station and sewage station<\/td>\n COVID-19<\/td>\n Centralized disinfection of sewage<\/td>\n<\/tr>\n \n Hospital sewage municipal drainage pipe network<\/td>\n 3*6<\/td>\n #2, #44 and #30 Inspection well<\/td>\n COVID-19<\/td>\n Halfway from hospital drainage to sewage treatment plant<\/td>\n<\/tr>\n \n Municipal sewage pipe end sewage treatment plant<\/td>\n 2*6<\/td>\n Sewage plant water intake & sewage plant effluent<\/td>\n COVID-19<\/td>\n Routine disinfection of sewage treatment plants<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \n
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