en-us https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001 Comments from Coronavirus And The Water Cycle—Here Is What Treatment Professionals Need To Know https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1097557425So quickly, a year has passed when I reread this article, the world is still immersed in the coronavirus pandemic. Sun, 14 Feb 2021 12:53:26 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1097557425 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1096479923Covid-19 es la enfermedad causada por el virus SARS-COV2, no es un virus como se ha expuesto acá. Para asegurar el tratamiento se debe usar el Proceso de Oxidación Avanzado, el cual es efectivo para la eliminación de virus. Wed, 6 Jan 2021 15:09:14 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1096479923 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1090288064Appreciated for the best presentation! my comments is since coved-19 virus is pandemic as oceanographer scientist it used to hypothesized virus contributes to kill other pathogens and makes the water body pure than previous status just intespecific competition with other organism is it more pronounced in river continuum or? Thu, 21 May 2020 09:36:04 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1090288064 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1089418069The paper does not seem to address the use of gray water irrigation systems. Virus has been found in gray water systems. If it’s directed to irrigation without testing for the virus, particularly when irrigation occurs near human populations, it seems that the aerosolized virus could pose a significant danger. Wed, 22 Apr 2020 19:24:55 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1089418069 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1089151866I just read this: It has been established with other human pathogens that formation of droplets and aerosols from water contaminated with microorganisms can serve as a vehicle for transmission. Examples include Legionella, a respiratory pathogen acquired when contaminated water droplets are inhaled (Butler and Breiman, 1998), and Cryptosporidium, an enteric pathogen acquired via ingestion of contaminated droplets (CDC, 1998). Desiccation and aerosolization of body fluids and fecal matter, resulting in ingestion or inhalation of dried particles, can also serve as a source of pathogens such as norovirus (Marks et al., 2003) and hantavirus (LeDuc, 1998). SARS was spread when water contaminated with fecally shed virus was inhaled, causing respiratory infection. This person-to-person fecal droplet–respiratory transmission route was observed in the Amoy Gardens apartment building outbreak in Hong Kong, the largest point-source outbreak attributable to this type of transmission pathway. When an individual shedding infectious virus in feces used the toilet facilities in a building, a combination of faulty drain traps and powerful exhaust fans in residential units resulted in virus-laden liquid droplets being drawn from the waste system into living spaces via floor drains. The droplets were inhaled by occupants and carried on air currents to other areas of the building, resulting in a large number of SARS cases (WHO, 2003, McKinney et al., 2006). More data are needed on the survival of SARS-CoV in fecal droplets and aerosols to assess this new risk pathway in the event that SARS reemerges. The results of this study suggest that coronaviruses can survive long enough in water and sewage for these vehicles to serve as a source of exposure. The potential for long-term survival, along with the airborne fecal droplet transmission model, suggests that fecally contaminated aqueous media could pose a health risk in future outbreaks. If water or sewage contaminated with SARS-CoV becomes aerosolized, it could potentially expose large numbers of people to infection. This could create an ongoing risk during an outbreak, even with quarantine measures to isolate infected individuals. Commercial, residential, and hospital water or sewer systems contaminated with persistent infectious SARS-CoV might defeat quarantine measures by continuing to spread virus even after infected individuals have been removed from the area. The persistence of coronaviruses in water and sewage in this study suggests that quarantine measures, which proved effective in containing the last SARS outbreak, could be seriously undermined unless adequate attention is paid to the safety and security of building plumbing systems. For assessment of these risks, further work is necessary to better define the kinetics of SARS-CoV survival and inactivation in water, sewage, and other aqueous media. The survival and persistence data presented here show that TGEV and MHV may serve as conservative indicators of the survival of SARS-CoV in water and sewage, providing a starting point for risk assessments of water and sewage as vehicles for SARS transmission. Go to: 5. Conclusions • The coronaviruses TGEV and MHV survived and remained infectious for long periods in different water types, including reagent-grade water, surface water, and pasteurized settled sewage. • Both viruses survived and remained infectious at both low (4 °C) and ambient (25 °C) temperatures. • In all water types tested (reagent-grade water, lake water and settled sewage), the titer of infectious virus declined more rapidly at 25 °C than at 4 °C. • Water type, incubation time, and temperature were significant predictors of log10 viral reduction kinetics. • The persistence of coronaviruses in water observed in this study suggests that if SARS-CoV should reemerge in human populations, water contaminated with these viruses may continue to pose an exposure risk even after infected individuals are no longer present. Wed, 15 Apr 2020 18:59:34 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1089151866 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088834521For companies that process water with chlorine gas, chlorine-containing reagents or chlorine dioxide in the process of its preparation, I think that there is no risk to infect the employees of wastewater treatment plants. Normally, the residual chlorine should be in the tap of each consumer, and as a result, the coronavirus will die in the water that drains into the sewer. Tue, 7 Apr 2020 18:21:39 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088834521 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088617640The risk is higher in hospital wastewater . WWTPs should be retrofitted with advanced techniques to disrupt the DNA. We should explore if disinfection strategies inside hospital for small apparatus made of plastic and metals cleaning is effective or alternate strategies should be developed. Thu, 2 Apr 2020 10:26:15 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088617640 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088598466Great article except one technicality: You are calling COVID-19 a virus, but it is my understanding that SARS-CoV2 is the virus; COVID-19 (Coronavirus Disease 2019) is the disease which that virus spreads.Is this correct? Wed, 1 Apr 2020 20:27:53 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088598466 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088584659Do we know the real danger to workers who may come in contact with raw sewerage? Such as flow monitoring maintenance activities, smoke testing (can this activity cause airborne exposure from raw sewerage?), etc. Wed, 1 Apr 2020 12:41:55 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088584659 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088582599That's why inline and online sensors are necessary for continuous monitoring. Wireless transmission with a mobile app visualization will also ensure that the operator doesn't miss a thing. For eg if the chlorine sensor is no longer measuring or if the TSS value at the outlet of the filter hits the maximum allowable limit, an alarm should be sent to your operator's mobile device. Wed, 1 Apr 2020 11:43:23 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088582599 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088582565Thank you. A very informative and timely article. Chlorination as the last step is mandated for long time by most governing bodies in Canada and it should be ensure we get the highest log reduction for viruses in drinking water treatment. Wed, 1 Apr 2020 11:42:13 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088582565 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088419611Am I over concerned regarding the amount / concentration of "human sewage" if there are conference halls being filled with 2000 beds where the plumbing for that conference hall was never designed for the safe disposal / disinfection of "human sewage". Am I also being alarmist as to the low probability of the conference centre's "waste water supply AND THE MAIN DRAINS THEY ARE CONNECTED TO to being "with minimum / fast / temporary waste water plumbing coping? FINALLY if this error leads to a massive, wider contamination (or even rupture of the system) just how will this significantly larger network of pipe-work be safely disinfected at ACCEPTABLE intervals and with potential repairs if ruptured? Dr. Philip Monro PhD Sat, 28 Mar 2020 17:48:53 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088419611 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088109845This comment is disturbing knowing I work with alot of people who work in the sewer still everyday even today.... I am self isolating after coming home out of country Sat, 21 Mar 2020 06:16:08 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1088109845 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087973404This info seems to be deliberately 'suppressed' here in the UK. Is CORONAVIRUS - COVID-19 present in Raw Sewage? … YES…AND STILL THE RAW SEWAGE IS BEING DISCHARGED INTO UK RIVERS, STREAMS, CANALS, SEA, ETC. BY UK PRIVATISED WATER AND SEWAGE COMPANIES NATIONWIDE AND AUTHORISED BY GOVT AND THE ENVIRONMENT AGENCY… TO PROFITEER AND SAVE MONEY ON PROPER SEWAGE TREATMENT THAT WOULD SOMEWHAT LESSEN THE RISK OF SPREADING THE CONTAMINATION... THE PUBLIC PAY FOR RAW SEWAGE TREATMENT IN THEIR WATER AND SEWAGE BILLS. Wed, 18 Mar 2020 01:54:38 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087973404 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087814955Very good article, very focused, especially in this time of exaggeration and disinformation. Based on what the author has stated, I would like to highly recommend the reliable and sustainable online disinfection system (directly on the water stream): BlueSense OXAQUA manufactured in the Netherlands, is a natural generator of Electrochemically Activated Water (ECA Water). This system produces hypochlorous acid (HOCI) naturally in drinking water to disinfect flows of up to 10 m3 / hour, without adding chemicals or precursors such as sodium chloride (the concentration must be greater than 20 ppm of chlorides). OXAQUA also creates a residual oxidant up to the point of use by the end user. OXAQUA uses chlorides naturally present in water to generate up to 2 ppm of free chlorine in the form of hypochlorous acid. This strong oxidant is known to prevent the spread of bacteria, viruses, algae, and molds in drinking water and hot water systems. Sun, 15 Mar 2020 00:11:55 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087814955 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087811615Hmm I have one of these uncovered sludge aeration tanks on the other side of my fence downwind of my garden and house. Seems I'm right to be concerned? Sat, 14 Mar 2020 22:55:19 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087811615 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087611457Very informative article and quite useful in understanding the impact of controlling corona viruses in water and wastewaters. Wed, 11 Mar 2020 08:19:56 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087611457 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087588063This is why we need to stick to WQ monitoring - you cannot control what you do not measure! Tue, 10 Mar 2020 15:40:05 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087588063 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087582174Of course chlorination,UV or Reverse Osmosis in drinking water treatment are effective barriers against all viruses, also coronavirus. But what will happen if such a barrier fails? Then the coronavirus can spread through the distribution system. What is the risk if you drink such contaminated water? In other words: Is the oral intake of coronavirus a significant route for infection? Tue, 10 Mar 2020 11:55:32 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087582174 https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087580934We must thank the authors for this sensible evaluation of the public health risks from Coronovirus Corvid 19. It would appear they are indicating that there is potential risks from Coronovirus in wastewater for example aerosols from uncovered activated sludge aeration tanks and in discharging untreated sewage into cold (bathing) water through Combined Sewer storm Overflows of which there are 31,000 in the UK alone. Tue, 10 Mar 2020 11:10:52 +0000https://www.wateronline.com/doc/coronavirus-and-the-water-cycle-here-is-what-treatment-professionals-need-to-know-0001#IDComment1087580934