Can boiling water be boiled twice, and can boiled water be boiled a second time

Boiling water boils and boils again to drink. Boiling water is boiled and boiled twice, as long as the water itself is not contaminated, it can be drunk. However, it is not recommended to boil the water repeatedly or boil it for too long to drink, because the water may be contaminated and will have an impact on human health.

Repeatedly boiling water, may have a greater risk of bacteria in the water, bacteria and dust in the water may affect the human body, and it is difficult to ensure that the boil to 1, bacteria can not be guaranteed to be destroyed, if the drinker has weak gastrointestinal function, may have diarrhea, bloating and other uncomfortable symptoms. In addition, if the water boiled a few days ago is boiled a second time, there is a greater possibility of unclean substances, and it is not recommended to continue drinking.

It is recommended to drink the boiled water on the same day, if the boiled water is not drunk on the same day, special attention should be paid to the storage environment and method, such as covering the lid to avoid foreign objects falling into the water and preventing contamination by bacteria in the air.

It is possible to reheat it, but do not reheat it overnight. Boiled water should not be stored for a long time, and there will be a certain concentration of nitrite in the overnight boiling water, which is a carcinogen, although the concentration is not high, but long-term drinking will gradually be enriched. <

It is possible to reheat it, but do not reheat it overnight. Boiled water should not be stored for a long time, and there will be a certain concentration of nitrite in the overnight boiling water, which is a carcinogen, although the concentration is not high, but long-term drinking will gradually be enriched.

Water that has been boiled twice can be drunk. From a health point of view, boiling water can be boiled a second time, and we usually say that we can't drink "thousand boiling water", not the second boiling water, but the water that has been boiled many times, and the water will vaporize part of it when boiled, and repeated boiling will cause a large number of mineral components to remain in the remaining water, and the concentration is very high.

The water is boiled, and the spring can generally be boiled a second time.

From a health point of view, it is possible to continue drinking water if it is boiled twice, but it is best not to boil the water repeatedly, after boiling it once, before the next drink, as long as it is heated to drink.

Although water can be boiled twice, it is not recommended to boil water overnight. There will be a certain concentration of nitrite in the overnight boiling water, which is a harmful substance to the human body, although the impact is not particularly large, but long-term drinking will be harmful to health.

If you usually drink purified water or mineral water, there is no need to boil the water at all, as long as the water is heated and you can drink it, because the two types of water are filtered themselves, and if you boil it, the nutrients in it will be lost.

Recommended daily water intake:

Under normal circumstances, if an adult is engaged in light physical labor, he should drink 1500 1700 ml of water per day; If you are engaged in manual labor in a high-temperature environment, how to increase the amount of water intake.

In addition to the water drunk every day, the meal also contains a certain amount of water, so the normal water intake plus the water in the diet, a person's daily water intake of about 2700 3000 ml is more appropriate. <>

OK. From a health point of view, boiling water can be boiled a second time, and it is usually said that you can't drink a thousand boiled water, not the second boiling water, but the water that has been boiled many times, and the water will vaporize part of it when it is boiled.

Repeated boiling will cause a large number of mineral components to remain in the remaining water, the concentration is very high, after drinking will increase the risk of liver, kidney, stomach, intestinal stones, and the mineral concentration in the water boiled twice does not reach the pathogenic concentration at all, you can drink.

Notes:

When the water is about to boil (80 -90), the lid should be opened: because there are more and more organic pollutants in the water now, some substances are volatile and will volatilize with the water vapor when heated. Therefore, when the water is about to boil, the lid of the kettle should be opened to allow these substances to be volatilized to the maximum.

Boiling water is not the longer it is boiled, the better, because the longer it is burned, the non-volatile harmful substances and nitrites in the water will be concentrated due to the evaporation of the water, and the content will be relatively high.

The above content reference: People's Daily Online - Repeatedly boiled water can be drunk.

Yes, it is possible to drink water that has been boiled repeatedly.

People are worried that the water that has been boiled repeatedly cannot be drunk, mainly because they are afraid that the nitrite of the water boiled repeatedly will rise, but in fact the nitrite does not rise. The reason for the increase of nitrite caused by repeated heating of drinking water is mainly the increase of nitrite concentration due to water evaporation and concentration, but the total amount does not increase; Another possibility is that some nitrates are heatedly broken down into nitrites.

After boiling water is stored in a thermos pot for 5 to 6 days for a long time, due to the action of bacteria and the relatively high nitrate content in the water in some rural areas, the content of nitrite is indeed at risk of elevating. Therefore, it is recommended to drink the boiling water as soon as possible after boiling, and do not store it for a long time.

Boiling water can be boiled twice. But a lot of things are relative. Drinking reheated boiled water of different water quality has different effects on the human body;

1. The secondary heating of boiling water is the concentration of water, which will increase the hardness of non-carbonate in the water, and the content of some elements harmful to the human body in the water may increase due to concentration, and drinking such may have an adverse effect on the human body. This is the reason why people say that "a thousand boiling water" cannot be drunk.

2. There are individual areas where the temporary hardness of tap water is larger, after people drink normal boiled water, the incidence of stones is higher, and calcium and magnesium ions can be precipitated through a heating, which is equivalent to a special treatment of water.

In the past, the water in my mine was temporary, and the water treatment engineer came up with the solution of heating the drinking water. Most people drink this kind of secondary boiling water, and a lot of limescale is left in the kettle.

Boiling water can be boiled a second time.

However, boiled water cannot be boiled multiple times, which will increase the nitrite content in it. In reality, water is not pure, repeatedly boiled water, nitrite will continue to rise, the concentration of the solution will change, the proportion of harmful substances will exceed the standard, it is not recommended to continue drinking. Therefore, the water should not be boiled all the time, and the boiling water should be drunk as soon as possible after boiling.

Precautions for the use of electric kettles for boiling water

1. When using, the scale or other stains on the electric kettle should be removed frequently, otherwise the thermal efficiency and life of the electric heater will be affected. You can put vinegar in the pot, add some water appropriately, soak in the place where there is no scale, then turn on the power, cut off the power after the vinegar boils, soak for 10 minutes and then take it out. Gently wipe the surface with a cloth to remove dirt.

2. Do not power on first, then load water; Do not use an electric kettle to cook anything with acid, alkali or salt, so as not to corrode the kettle and heater. Carefully check for pot water leakage around the bakelite socket before powering it on after each water filling.

3. The electric kettle is to use an electric heating pipe to heat the water. The heating part of the electric heating pipe is located in the kettle, but its conductive terminal is placed outside the kettle, and the inside and outside are mostly connected by bolts, and the rubber ring between the electric heating pipe and the kettle body is sealed and leak-proof.

The above content refers to Encyclopedia - boiled water.

Boiling water can be boiled a second time.

But water should not be boiled repeatedly. Water vaporizes a portion of it when it is boiled, and repeated boiling causes a large amount of mineral components to remain in the remaining water, producing nitrite, which is not good for health.

After boiling boiled water, after being left in the air for 16 hours, the total number of E. coli will seriously exceed the standard, therefore, the shelf life of boiled water after boiling is only 16 hours, and it is recommended to drink it up within this time.

From a health point of view, boiling water can be boiled a second time, and when we usually say that we can't drink "a thousand boiling water", we are not talking about boiling water twice, but water that has been boiled many times.

When the water is boiled, it vaporizes a part, and if it is boiled many times, a large amount of mineral components remain in the remaining water, and the concentration is very high.

Water that cannot be drunk in life:

1. Raw water: Raw water contains a variety of microorganisms and viruses, which cannot be directly drunk, and can be infected with fungi, parasites, viruses and so on.

2. Aging water: Aged water is also called stagnant water, water that has been stored for a long time, and there are few active water molecules in this water, and long-term drinking will increase the risk of esophageal cancer and stomach cancer.

3. Thousands of boiling water: Thousands of boiling water is water that has been boiled many times, and the content of minerals in this water is very high, which will increase the risk of liver and kidney stones after drinking.

4. Unboiled water: Unboiled water is similar to raw water, and fungal and viral infections are possible, and it will also increase the risk of carcinogenesis and teratogenicity.

Boiling water can be boiled a second time. Boiled water can be reheated when it cools. The biggest advantage of boiling water is that most of the bacteria, viruses, and fungi that remain in the water can be killed by high temperature when boiling for a few minutes to tens of minutes.

After the boiled water becomes cool, if it is stored for too long, bacteria and other microorganisms will invade, and it is generally heated at this time. Prevent vomiting, diarrhea and other symptoms of infection after drinking, especially infants and young children with weakened immunity are more likely to have digestive symptoms.

Water that has been boiled twice can be drunk. From a health point of view, boiling water can be boiled a second time, and we usually say that we can't drink "thousand boiling water", not the second boiling water, but the water that has been boiled many times, and the water will vaporize part of it when it is boiled, and repeated boiling will cause a large number of mineral components to remain in the remaining water.

The concentration is very high, and after drinking, it will increase the risk of liver, kidney, stomach, and intestinal stones, and the mineral concentration in the water boiled twice does not reach the pathogenic concentration at all, so you can drink it.

Usually said that you can't drink the second boiled water, it should be said that the overnight water or long-term storage of boiling water boiled again, boiled water is the same as other food, should not be stored for a long time, overnight boiling water will have a certain concentration of nitrite, this ingredient is a carcinogen, although the concentration is not high. However, long-term drinking will gradually be enriched, so that it can cause disease.