Drinking overnight water is a drinking habit of many people. However, two primary school students in Beijing have proved through scientific experiments that water can be drunk overnight. They put the hot water in the science and technology museum for one day, two days and three days, and then compared it with the water samples of tap water for chemical analysis. The values of PH, phosphate, nitrate, dissolved oxygen, chlorine and chemical oxygen consumption are all within the normal range, that is to say, overnight water has no side effects on human body and can be drunk.
Two primary school students did this experiment because they made unannounced visits to some institutions and found that an office of an institution pumped four thermos bottles of boiling water every day and poured out more than one bottle the next morning. This institution has 62 offices and pours 38 tons of water a year. There are many offices in Beijing, and there are many offices in China. It is an amazing number to waste water just by not drinking overnight water.
Two primary school students used science to tell people that water can be drunk overnight, and also put forward specific water-saving suggestions: first, be careful and calculate how much water to drink; Second, concentrate on recycling, prepare some clean containers, and concentrate the leftover water for other purposes; Third, try to use electric water heaters for drinking. It should be said that these suggestions are not difficult to do.
China is short of water resources, but on the other hand, it is seriously wasted. It is a big problem directly related to the future survival and development of our nation to establish water-saving consciousness, effectively use limited water resources and put an end to all water resources waste. Faced with the "scientific" advice of two primary school students, shouldn't all adults do better?
The General Administration of Quality Supervision, Inspection and Quarantine said that repeatedly heating water is not necessarily harmful.
On February 22nd, at a press conference of Zhejiang Cixi Qixi Electric Appliance Co., Ltd. in Beijing, Frank Fang, the marketing director of the company, broke out two "shady" industries that shocked everyone: the hot-gallbladder water dispenser with a domestic usage of 99.3% was "all toxic"; The traditional water dispenser is the "invisible champion" of all household appliances. This news immediately triggered a huge market response. So, is the water dispenser in the consumer's home a "drug maker"? How do experts judge the "toxic theory"? The reporter conducted a relevant investigation on this matter.
● Core event: "All the drinking fountains with gallbladder heat are poisonous"
A news that 99.3% of drinking fountains are toxic immediately triggered a huge market response. Is it true or is there something else? The reporter made a relevant investigation on whether the drinking fountain is poisonous. On February 22nd, at a press conference of Zhejiang Cixi Qixi Electric Appliance Co., Ltd. in Beijing, Frank Fang, the marketing director of the company, broke out two "shady" industries that shocked everyone: the hot-gallbladder water dispenser with a domestic usage of 99.3% was "all toxic"; The traditional water dispenser is the "invisible champion" of all household appliances.
Frank Fang believes that at present, 99.3% of domestic drinking fountains are unhealthy hot-bladder products, and there are congenital defects in design and structure.
It is particularly noteworthy that "drinking water will be heated, cooled and reheated repeatedly in a hot container to form' thousand boiling water'". Frank Fang's reason is: "Although boiled water looks clean, it is a concentrated solution of harmful substances such as heavy metals and arsenic. Long-term drinking will interfere with people's gastrointestinal function, causing diarrhea and bloating. "
At the press conference, Frank Fang quoted a test report issued by the national environmental testing department. The report shows that if the inner container of traditional drinking fountains is not cleaned for more than three months, a large number of bacteria, residues and even red worms will breed and attach to the inner wall of hot containers, becoming toxic "additives" for drinking water. After the water dissolved in this "additive" enters the human body, it will cause diseases of digestive, nervous, urinary and hematopoietic systems, and even cause premature aging.
Are most water dispensers on the market poisonous? Is the water dispenser in consumers' homes a "drug maker"? How do experts judge the "toxic theory"? When reporters interviewed relevant parties on related issues, they unexpectedly got different answers.
● Three major questions: the "toxic theory" is suspected of speculation.
Question 1: Where did the data of 99.3% drinking fountains come from?
Chen Licheng, marketing director of Zhejiang Cixi Qixi Electric Appliance Co., Ltd. told the reporter that this data is based on the sales statistics in the market. At present, only 0.7% of the manufacturers in the market, including the company, produce courageous water dispensers, and most of them produce courageous water dispensers. Therefore, it is concluded that "99.3% drinking fountains are toxic".
Frank Fang, the marketing director of Zhejiang Cixi Qixi Electric Appliance Co., Ltd. said that the reason why 99.3% of the data were thrown out was only to show that if the bile machine was not cleaned for more than three months, it would breed bacteria and cause secondary pollution.
At present, there are only two domestic enterprises producing bravery-free drinking fountains. "This kind of data is only the result of a market survey in Ningbo. According to the survey, the liner will be dirty if it is not cleaned for 3 months, and these scales are harmful to human body. About 0.7% of drinking fountains on the market do not need cleaning. The problem of scale can be ignored on the gallbladder-free drinking machine. "
Question 2: Is there no scale without courage?
According to Frank Fang, drinking water in drinking fountains is usually divided into mineral water and pure water. Mineral water is prone to scale when the water temperature is high. When there is "boiling water" after repeated heating, the scale phenomenon is inevitable. This problem is inevitable, but the scale phenomenon is not obvious, even if it has been formed for a long time, it may be two or three years.
Question 3: Does the "toxic theory" belong to hype?
Regarding whether the theory of toxicity belongs to vicious speculation, Frank Fang believes that the emergence of the bravery-free drinking machine lies in the discovery of a good scheme, and the problems related to water health have been puzzling the drinking machine manufacturers. "Now we have the responsibility to explain this problem to consumers and hope that consumers can drink healthy water. I don't think this is malicious hype. We also hope to cooperate with traditional water dispenser manufacturers in this respect, "Frank Fang said.
Eight kinds of water can't be drunk.
There are different opinions about whether drinking fountains are toxic or not, but no matter who is right or wrong, you should drink healthy water, and remember that you can't drink eight kinds of water.
Raw water: chlorine in tap water can interact with residual organic matter in raw water, which can easily lead to bladder cancer and rectal cancer; The raw water in the wild contains harmful bacteria, viruses and parasites. It is easy to get acute gastroenteritis, hepatitis, typhoid fever, dysentery and parasitic infection after drinking.
Unbboiled water: Drinking unboiled water increases the possibility of bladder cancer and rectal cancer by 265,438+0%-38%; When the water temperature reaches 100℃, the harmful substances will be greatly reduced with the evaporation of steam. If you keep cooking for 3 minutes, it will be much safer to drink.
Re-boiled water: If boiled water is re-boiled, the content of nitrite in the water will exceed the standard, which will cause damage to human health for a long time and lead to cancer.
Water left in the air for a long time: cold boiled water should not be exposed to the air for too long, otherwise it will lose its biological activity and thus lose many special functions; If the time is too long, it will not only lose all kinds of minerals, but also increase the content of some harmful substances.
Overnight water: it is not the boiling water in the thermos bottle that day, but similar to the water that has been put in the air for a long time.
Aged water: water that cannot be stored for a long time. Drinking this kind of water often will obviously slow down the metabolism of minors' cells and affect their growth and development; Middle-aged and elderly people accelerate aging; Therefore, the incidence of esophageal cancer and gastric cancer is increasing.
Thousands of boiling water: Thousands of boiling water is boiled on the stove for one night or a long time, and it is repeatedly boiled in electric water heaters. Drinking this water for a long time will interfere with people's gastrointestinal function and cause temporary diarrhea and bloating.
Steamed water: Steamed water is the boiled water left at the bottom of the pot when steaming steamed bread, meals and other foods. Drinking this water often, or cooking porridge with this water, will cause nitrite poisoning, and scale will often enter the human body with water, causing digestive, nervous, urinary and hematopoietic diseases, and even premature aging.
● Authoritative statement-AQSIQ: Repeated heating is not necessarily harmful.
In view of the quality and safety of household drinking fountains, the relevant person in charge of the General Administration of Quality Supervision, Inspection and Quarantine said that China's national standards have corresponding regulations on the sanitary indicators and electrical safety indicators of stainless steel tableware containers such as drinking fountains. AQSIQ will intensify the national supervision and spot check on stainless steel tableware such as drinking fountains.
Regarding the quality of stainless steel containers in drinking fountains, the relevant person in charge of AQSIQ pointed out that from the analysis of the working principle of drinking fountains equipped with stainless steel containers, the water in drinking fountains is repeatedly heated, but it cannot be considered that drinking water may produce harmful substances such as heavy metals and arsenic compounds. After testing, the stainless steel liner that meets the requirements of national standards is safe.
● Expert opinion: The "toxic theory" is groundless.
Chloe Wang, Deputy Secretary General of China Household Electrical Appliances Association:
Chloe Wang, Deputy Secretary-General of China Household Electrical Appliances Association, said in an interview that he attended the company's new product launch conference to support the technology of new products, but he did not agree with the so-called "toxic theory" of drinking fountains. "As an enterprise, we may not have the courage to express our views on right and wrong, but in the attitude of being responsible to consumers, the' toxic theory' of water dispensers lacks scientific basis. So far, I haven't heard of anyone being poisoned by drinking water from the water dispenser, "Chloe Wang told reporters.
In Chloe Wang's view, the good Samaritan drinking fountain not only enriches the varieties of drinking fountains, but also avoids some problems in the use of the good Samaritan drinking fountain, such as "boiling water". However, "in places with large water consumption, units that drink a bucket of water for a day or two should not have these problems."
Is the bravery-free drinking machine really perfect? At the same time, Chloe Wang questioned: "The bravery-free drinking machine can't produce ice water. In addition, the scale of the water dispenser with gallbladder is all on the surface of the inner container, so where is the scale of the water dispenser without gallbladder? Especially in the areas with serious scale formation in the north, how to solve the scale problem of the gallbladder-free water dispenser deserves our attention. "
Li Fuxing, Chairman of Health Drinking Water Professional Committee of Chinese Medical Association:
In an interview, Li Fuxing, the chairman of the Healthy Drinking Committee of the Chinese Medical Association, who was accused of supporting the courageous drinking machine at the scene, stressed that the language for judging that "thousand boiling water" contains harmful substances such as heavy metals was "never said".
According to Li Fuxing, at the press conference held that day, he focused on the secondary pollution of drinking fountains. "Any technology has two sides, and the main problem of drinking fountains is secondary pollution. We have done tests, and the cold water in the water dispenser will smell after seven or eight days. Therefore, the most common way is to avoid light as much as possible. " Li Fuxing thinks: "I don't think the toxic theory has scientific basis. Now all water dispenser manufacturers are seeking to solve the problem of secondary pollution. An effective way is to clean the water dispenser frequently. "
● Interview Notes: Don't forget to read the instructions.
In the interview, the reporter also found that the product specifications of regular water dispenser manufacturers all indicate that the water dispenser should be cleaned after 3-6 months of use, and regular water dispenser manufacturers basically provide on-site cleaning services for customers.
What is worrying, however, is that many consumers rarely read the product instruction manual after buying the water dispenser. Not only drinking fountains, but also many household appliances, consumers rarely read the instructions after buying them back. Nowadays, people are increasingly concerned about whether the quality of life is healthy. When consumers use household appliances, should they also carefully check the "Product Instruction Manual" that brings convenience to them?