Does the toilet lid need to be covered when flushing the toilet?
Does the toilet lid need to be covered when flushing the toilet? For this issue, there have been two non-stop arguments. Some people think that: when flushing the toilet, it is necessary to close the toilet lid and the bacteria will not come out when flushing. Some people think that even if the toilet lid is closed when the toilet is flushed, the next time the toilet lid is opened, it will also be exposed to bacteria. Which statement is correct?
I remember the first two years, we were a foreign expert "scientific" passed, flush the toilet without a toilet lid, the instantaneous cyclone inside the toilet can bring germs or microorganisms up to 6 meters high in the air, and suspended in the air for several hours It sounds terrible. This theory has also been widely disseminated and widely recognized. Even now, there are many friends who are spreading it.
This issue was recently discussed again. After re-examination by scholars from the Beijing Normal University's School of the Environment, the results are quite different from those before. Beijing Normal University's experts first poured the E. coli solution into the toilet and set a sampling point every 25cm.
The experiments were divided into two groups: Group A was the distribution of bacteria within 3 minutes after the toilet lid was flushed, and Group B was the distribution of bacteria within 3 minutes without the toilet lid.
After 24 hours, the bacteria of the sample were cultured. The total number of open colonies was 34, which was lower than the number of colonies covered: 60. In other words, flushing the toilet not only has bacteria, but also more bacteria than the lid to flush the toilet!
Why is the result of the experiment so much different?
Beijing Normal University professor explained: The current general toilets are siphonic toilets. The siphon effect produced after the water goes down sucks all the excrement away. The effect of the suction is much greater than the effect of water flowing out of the air. Therefore, the bacteria will not fly up to 6 meters high. Instead, when closing the toilet, there may be a small portion of bacteria attached to the toilet seat, causing more bacteria around the toilet.
Although the experiment has overturned the mainstream arguments of the previous two years, the experiment also illustrates one thing: the toilet lid is covered or not, and bacteria are there. To reduce bacteria, the most important thing is to clean the toilet, clean the interior of the seat and toilet!
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