How much invisible dirt is there in the swimming pool? I don’t want to go swimming after watching it

The seemingly clear water in the swimming pool actually hides a lot of things you can’t imagine. Do you think disinfectant can help you isolate these disgusting things? People often think that chlorine in the swimming pool can make the water in the swimming pool clean and sterile. In fact, the truth is often unsatisfactory.

Data show that everyone enters the pool with some of their own excrement.

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1. 14 g feces

2. 400-500ml of sweat

3. 250 ml urine

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4. Billions of skin microbes

5. Some skin disease patients have blistered dander

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Many people’s eyes will be red and swollen after frequent swimming. Some people think that it is because of chlorine disinfectant. In fact, it is not because chlorine reacts with urine. At the same time, swimming pool cosmetics and other substances will also interfere with the germicidal efficacy of chlorine. It has to be said that urine is the main interfering substance, and the water in the swimming pool is not changed every day, but is disinfected by the regular circulation system. When the disinfectant loses its function, you can imagine how dirty it will be.

Urine itself is harmless to human body, but its nitrogen-containing compounds such as urea, ammonia, amino acids and creatinine will react with chlorine and other disinfectants to produce chloramines. These chloramines are toxic, and the indoor swimming pool lacks sunlight for a long time, and the ventilation is poor. These by-products are more difficult to disperse. Why do some people’s eyes turn red after swimming? These chloramines are a source of stimulation. They not only stimulate the eyes, but also stimulate the skin, corrode the scalp and make swimmers feel disgusted. And it can penetrate into the body through the skin. Although there is no obvious discomfort, it will become a disease over time. And every swimmer in the learning process will drink a few mouthfuls of the original pool water, drinking too much will also make you vomit.

In order to solve the problem of urea exceeding the standard, the daily water exchange rate of swimming places should reach about 10%. Meanwhile, swimmers should also keep good personal hygiene habits, and do not defecate in the swimming pool. Although there are always some people who can’t, we can reduce the damage of chloramines in swimming pools by cleaning ourselves thoroughly after swimming. Not only that, looking at the water in the pool is also one of the ways to reduce injuries.

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1. Before swimming, we might as well carefully observe whether the water in the swimming pool is clear, and check the amount of plankton with a glass. Normally, our country requires that the water clarity of the swimming pool is 1 NTU, which is higher than or equal to the domestic water.

2. Stand by the swimming pool and smell the smell of chlorine. When chlorine works, it has a slight smell but not strong. If it is not smelled, it means that too little chlorine can not achieve the disinfection effect. If it is too strong, it means that excessive chlorine will harm human body.

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3. You can ask the swimming manager about the change of water, know about the time of changing water in the pool, and infer whether the water is still safe according to the number of people in the pool and the time of changing water.

Of course, many swimming pools use intelligent systems to control the amount and time of disinfectant, avoid human error, and ensure the safety of water quality. But parents who take their children swimming also need to pay attention to, even if the water quality of the swimming pool meets the standard, try to avoid the peak flow of people to swim; when children have wounds, they should avoid swimming; don’t stay too long in the swimming pool, usually about an hour; change the clothes and fashion well, to avoid cross infection.

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