Can I drink tap water after putting it in the freezer and waiting for it to cool down?

No, unboiled water contains a variety of microorganisms, pathogens and a large number of bacteria, and the human body is prone to infection with bacteria when drinking this water for a long time, and even hepatitis in severe cases. Although it is mixed with boiling water, it is difficult to kill bacteria in raw water.

Water should be boiled for 3 minutes before drinking, because drinking water that is not thoroughly boiled is easy to get cancer.

People in the city drink tap water, and ordinary water from rivers and lakes is chlorinated after being sent to the waterworks to remove impurities such as microorganisms. But at the same time, chlorine interacts with residual organic matter in water to form toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform.

Studies have proved that the content of halogenated hydrocarbons and chloroform is closely related to the change of water temperature and the duration of boiling. When the water temperature reaches 90, the content of halogenated hydrocarbons rises from 53 micrograms per liter to 191 micrograms, and chloroform rises from micrograms per liter to 177 micrograms, both exceeding the national standard by two times. When the water temperature rises to 100 μg, the content of halogenated hydrocarbons and chloroform drops to 110 micrograms and 99 micrograms respectively, which still exceeds the national standard.

If it continues to boil, after 3 minutes, the halogenated hydrocarbons and chloroform levels drop to micrograms and micrograms, respectively, and it becomes safe drinking water. And most of the water contains some microorganisms and bacteria.

You put water in the fridge and it doesn't kill microbes and bacteria, and it doesn't eliminate carcinogens!

There is no sterilization and disinfection, how can you drink it?

Brew straight without thawing. Generally, in order to soak lemons, the lemons will be frozen for dozens of minutes to facilitate knife cutting.

But we say that it is better to freeze as little as possible so as not to destroy the vitamins and weaken the aroma of the lemon.

And freezing lemons for a long time can cause the lemons to change and produce a bitter taste.

If the volume of the cup is the same, it is the room temperature drinking water that freezes first, and the room temperature refers to 25 °C, and the specific heat capacity of the same solution is the same, so the room temperature drinking water carries less heat, and the energy is released in the refrigerator to the temperature required for freezing.

According to the law of conservation of heat conversion, of course, it is at room temperature!

The 40-degree warm water first softened due to the high temperature.

People who agree with the negative answer, not only that, but often this will also lead to **cold and heat imbalance, and the resistance will decrease! If you're really going to fix your pores, you can use some gentle astringent products. Don't do anything that hurts your ** function.

If you don't understand, you can ask me again. 40989080

Hehe, it can indeed achieve the effect of shrinking pores, but it is only temporary, unless you always slap ice water on your face, hot expansion and cold contraction.

I think the first step is to put cleansing first (pore cleansing, so that the pores can be tightened), and the second step is to use ice water to tighten the skin.

Many people think that tap water is delivered to residential areas for drinking water after strict disinfection, and think that tap water can be drunk directly, but this is a very lack of common sense, why can't you drink tap water directly? The quality of tap water in China has not yet reached the level of tap water that can be directly drunk in some developed countries. In this case, boiling tap water before drinking it is the most economical and hygienic method of disinfection.

At this stage, in addition to chlorine, disinfectants also include chlorine dioxide and ozone, and the use of alternative disinfectants can reduce the amount of harmful substances and improve treatment efficiency.

At present, the world's safe tap water disinfection method is ozone disinfection, but this method is too expensive to treat, and the retention time of ozone treated water is limited, as for how long it can be retained, there is no exact concept. Therefore, only a few developed countries currently use this treatment method.

Tap water refers to the water produced by the tap water treatment plant after purification and disinfection that meets the corresponding standards for people's life and production. Domestic water is mainly absorbed from rivers, lakes, groundwater and surface water through the water intake pumping station of the water plant, which is treated by the waterworks in accordance with the relevant health standards for domestic drinking water, through precipitation, disinfection, filtration and other technological processes, and finally transported to various users through the water distribution pumping station.

The water produced by the waterworks is drinkable. However, this does not indicate that it is standard drinking water.

There are two reasons: 1) Although the use of chlorine to purify the water in the production process of tap water can kill harmful substances such as pathogenic microorganisms, the addition of chlorine itself can cause new chemical pollution. Chlorine can be combined with organic matter in water to form chloroform, which is a carcinogen. At the same time, chlorine also destroys nutrients and can easily lead to heart disease.

2) In the pipe network of tap water, long-distance pipeline transportation, old and rusty pipelines, urban high-rise water tanks and building reservoirs are not clean or used all year round without disinfection, which can cause secondary pollution. Secondary pollution causes bacteria, viruses and algae to multiply, plus the original chlorine and chloride, rust, heavy metals, radioactive substances, make the water turbid, have a peculiar smell, and its harm is endless.

Now tap water disinfection mostly adopts chlorination, the main purpose of public water chlorination is to prevent water-borne diseases, this method has been promoted to more than 100 years of history, with more perfect production technology and equipment, chlorine for tap water disinfection has the advantages of good disinfection effect, low cost, and almost no harmful substances. However, after understanding and studying the theoretical data, it is found that the use of chlorine for tap water disinfection still has certain drawbacks. Chlorinated tap water can produce carcinogens, and experts in the relevant field have also proposed many improvement measures.

Chlorine is soluble in water and reacts with water to form hypochlorous acid and hydrochloric acid, and hypochlorous acid plays a major role in the entire disinfection process. For inorganic substances that produce odors, it can completely oxidize and disinfect them, and for living natural substances such as algae and bacteria, it can penetrate the cell wall and oxidize its enzyme system (enzymes are biological catalysts) to make it inactive, so that the life activities of bacteria are hindered and die.

Hypochlorous acid itself is close to neutral, easy to approach the bacterial body and shows a good sterilization effect, hypochlorite ion also has a certain disinfection effect, but it is negatively charged and difficult to approach the bacterial body (the bacterial body has a negative charge), so compared with hypochlorous acid, its sterilization effect is much worse, so the chlorine disinfection effect is better than the use of bleach disinfection.

Although the hygienic quality of tap water meets national health standards, it is best not to drink unboiled tap water, because tap water is domestic drinking water, not direct drinking water, and there is a huge difference between the two.

Chlorine in tap water may induce cancer, and if you drink tap water for a long time, you may have a high risk of cancer, especially for rectal cancer and colon cancer.

How to boil tap water:

1. The water should be boiled thoroughly.

When boiling water, you can't think that the water is boiling because it is about to boil, and the water is more toxic at this time, and it has not been thoroughly boiled, so it should be boiled for a while before drinking.

2. The boiling time should not exceed 15 minutes.

In order to kill the bacteria and viruses in the water to the greatest extent, reduce the hardness in the drinking water and reduce the nitrite content in the drinking water, it is better to control the boiling time of boiling water within 5-10 minutes. If the boiling time is more than 15 minutes, or the water heater in a public place is boiling repeatedly, 3. Avoid using it for a long time to "heat up quickly".

Boiling water is equivalent to electrolyzed water, and boiling it will affect the quality of the water. Moreover, some inferior ones heat quickly and are easy to rust, which will pollute water quality, and more importantly, there are potential safety hazards such as electric shock.

4. Leave the tap water for a while before boiling the water.

If you use tap water to boil water, it should be noted that after chlorination, the combination of chlorine and organic matter in the water will produce halogenated hydrocarbons, chloroform and other carcinogens. When boiling water, take out the tap water and leave it for a while before boiling, which can accelerate the volatilization of harmful substances.

5. Open the lid of the pot when the water is about to boil.

When the water is fully boiling, remember to open the lid of the kettle to let it dry for a while (be careful not to get burned), and finally wait for 3 minutes after the water boils before turning off the heat, so that the chlorine content in the water can be reduced to the safe drinking standard, and it is the real boiling water.

Checking that tap water contains hard water: Methods for testing hard water and soft water:

Pour soapy water into the water and stir, if the water is not easy to foam, it is hard water, otherwise it is soft water.

Methods of softening hard water:

Boiling hard water can precipitate some soluble calcium and magnesium compounds, thereby reducing the hardness of water; According to the boiling point of the impurities of the water, the distilled water is obtained by distillation. Exposure to the sun, etc.

Level: Senior.

Hard water refers to the water containing more dissolved calcium salts and magnesium salts, which contains calcium bicarbonate and more magnesium bicarbonate water called temporary hard water, after this water is boiled, soluble calcium and magnesium salts become carbonate (one of the main components of the stone), most of which are precipitated, and the well water is temporary hard water; The water containing calcium sulfate (the main ingredient of gypsum) and magnesium sulfate is called permanent hard water, and when this water is boiled, the salt contained in it cannot be precipitated, and the seawater is permanent hard water.

Although there are many kinds of drinking water in the market, tap water is still the main daily drinking water for ordinary people, whether it was, is or will be. In terms of nutrients, tap water is not as rich in minerals as mineral water, and the pH value does not reach 7-8, but it can basically meet the needs of the human body. What needs to be paid attention to is the pollution problem of tap water.

In order to convert tap water into clean, healthy drinking water, the correct method of boiling water is extremely important. In life, we often see people boiling water by mistake like this: first, turn off the heat as soon as the water boils; the second is that the water is boiled and let it boil for a long time; Third, after the water is boiled, it is boiled with the lid of the kettle and boiled for a few minutes.

In fact, this is not good for water safety and health. The correct way to do this is to open the lid when the water is about to boil (80-90 degrees Celsius), wait for the water to boil for another 2-3 minutes, and then turn off the heat.

If you can't always get the right time for the water to boil, open the lid as soon as the water is boiling and wait another 2-3 minutes.

The reason for this is that there are more and more organic pollutants in the water now, some of which are volatile and volatilize with the water vapor when heated. Therefore, when the water is about to boil, open the lid of the kettle and boil it for another two or three minutes after the water is boiling to allow these substances to be volatilized to the maximum. On the other hand, boiling water for too long will also cause the water to deteriorate and form harmful substances.

Therefore, healthy, human-like water should be fresh.

In addition, if the water is left for too long after boiling, it will also become aging water, and the toxic substances in the aging water will increase with the increase of water storage time. Therefore, it is best to drink the boiled water on the same day, and some experiments have shown that drinking boiled water that is naturally cooled and left for no more than 6 hours is the most beneficial to human health.

Health Regimen Kidneys Stomach Cause Disease, Will You Get Sick by Drinking Tap Water Directly? Can you get sick if you eat the washed fruit directly? I see.

Tap water can't be drunk directly, so why can you eat fruit washed with it?

There is nothing wrong with drinking less if you can't do it, but it's best not to drink it directly, because there are a lot of chemicals in tap water, so it is recommended that we pay attention to healthy drinking water and be responsible for our own health!

It is best not to drink it for a long time.

Unboiled tap water may contain pathogenic microorganisms such as bacteria, viruses, parasites or eggs.

Although tap water is disinfected and filtered, many factors will affect the disinfection effect, so the disinfection effect is not necessarily particularly good, and it is easy to get sick after drinking it for a long time.

There are more germs in tap water, and it is better to boil it, at least above 80°C.

Hello. OK. It won't be damaged.

If it is winter, it is recommended to wait until the tank is warm before rinsing. If the tank is overheated and the tap water is cold, it will have a little effect on the tank, but it won't hurt the engine, unless your car hasn't turned off all the time.

Hello owner, as you said, high temperature and quick cooling are easy to cause deformation of the cylinder head, and it is not recommended to operate in this way. The front-line maintenance technician will answer the questions for you, please refer to the solution, and wish you a happy driving. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

1. Tap water contains bleaching powder. 2. The bleaching powder in tap water will appear CL (chemical name) after freezing, and after melting, it cannot be reduced, resulting in small white objects.

Why does natural spring water appear white flocculent after being left for a while.

If there is white flocculent or cloudy in the urine, there may be protein in the urine, and it is recommended to go to the regular urine routine for a regular examination. Other possible causes:1Drinking less water and changes in urine pH cause urate phosphate crystallization