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- Shanghai secondary water supply cleaning requirements
- Shanghai water tank cleaning issues to pay attention to!
- -Effective household cleaning and disinfection methods.
- -"Four Harms" Specific Prevention Measures
Secondary drinking water tank cleaning steps!
Shanghai secondary drinking water tank cleaning steps! People are getting richer, people are paying more and more attention to health, and water quality safety for high-level secondary water supply is also on the agenda. To maintain the water quality of the secondary water supply, the water tank equipment of the secondary water supply facility needs to be cleaned frequently, and the secondary pollution is often caused by the dirty water tank. Here comes the question: how to clean the water tank for secondary water supply? How often is it cleaned? Is it disinfected every time it is cleaned? First prepare for cleaning, and inform residents to prepare for water stop 3 days in advance
Water tank cleaning environment: sweltering
Before cleaning, drain the water from the water tank and drain the water from the water tank, leaving only about 30 cm. Subsequently, the staff put a non-slip notice board near the drainage well. Follow the cleaning port and enter the water tank. After entering the water tank, it felt hot and humid. Because the cleaning mouth is small, the air is not flowing, and the water tank is relatively humid and stuffy, and if you stay in it for a long time, some people will feel dizzy, chest tight, and hypoxia, let alone wait. In summer, the temperature in the water tank can reach 40-50 degrees, which is no different from a sauna.
Cleaning the water tank by hand: professional
Because there is no light in the water tank, the cleaning staff needs to bring their own lighting equipment. "These stainless steel supports have played a supporting role in the water tank and cannot be removed." Master Li, the cleaner, said. Due to the small space, the cleaning staff must pay more attention, otherwise they will be easily injured by collision with the steel frame. Because the cleaning was done half a year ago, the entire water tank looks very clean. However, some water tanks are extremely dirty and have never been cleaned, and the smell of them has been soaring.
Testing water quality: take water after cleaning and test the results
After finishing the cleaning work, the cleaning staff still need to spray disinfectant powder and disinfectant in the water tank and let it stand for half an hour, and then they can clean it again. After half an hour, you need to inject twice the water to wash the disinfectant and the residual powder. Finally, the gauze is laid out. This cleaning is not complete. The whole process takes about 4 hours. But don't think this is over, the Water Industry Group will send the cleaned tank water for testing, and publicize the water quality monitoring report in the community. Such tests are performed at least four times a year, and cleaning the water tank twice a year.