Why is there some white precipitate in household tap water?

After the water is boiled, there will be white sediment, which is scale, and these white sediments are mainly calcium carbonate.

and magnesium carbonate, among others. Calcium bicarbonate.

and magnesium bicarbonate are present in tap water, and they are both soluble. As the water temperature increases, the bicarbonate becomes unstable and decomposes into carbonate, forming a white precipitate.

When the water is boiled, the bicarbonate in the water begins to decompose into calcium carbonate or magnesium carbonate, which precipitates out of the water in the shape of crystalline particles to form a white precipitate, which is what we usually call water residue, scale, and water alkali.

In the north, precipitation.

Relatively small, people mostly rely on groundwater as their main drinking water. The deeper the well, the higher the mineral content of the water, and the more sediment there is in the water after boiling. This water can be drunk after being left in the sediment for a while, whereas the boiling water in the tap water has precipitation, which is also the reason for drinking.

The hazards of limescale.

A layer of white water alkali on the inner wall of the kettle, in addition to most of the calcium carbonate and magnesium carbonate, also contains a variety of harmful mercury, cadmium, lead, arsenic and other elements, if not often removed in time, repeatedly used to boil water, after filling water, harmful elements accumulate more and more, and can be dissolved in water again, when people drink it will enter the human body, thereby causing chronic poisoning of the human body and even can cause cancer and teratogenicity, seriously endangering human health.

How to remove limescale.

Lemon method to remove limescale.

Chop a lemon and boil it in a pot and soak it for a while to easily remove limescale. Supermarkets also sell detergents that specialize in removing limescale, and the main ingredient is citric acid.

The effect is the same as that of lemon.

The white precipitate is limescale, and the main components of scale are calcium carbonate and magnesium carbonate, and the boiled water will produce a large amount of nitrite in the water after repeated long-term heating, these substances are not good for the body, you must know that the human body ingests too much calcium and is easy to get stone disease, and the high content of calcium ions in the blood will lead to muscle weakness, and nitrite is easy to cause cancer.

However, don't be too nervous, don't turn off the heat immediately after the water boils, and let it boil for another 5 minutes, which can effectively reduce the content of harmful substances in the water, especially the content of nitrite.

Because if there are these things in the tap water, is it a disinfectant? He's going to be sterilizing, and that's it. The tap water head will do a disinfection treatment, so it will have these things, and then there will be some white hard lumps, which will take a long time to water, because if there are these things in the tap water, it will have disinfectant powder, he will be disinfected, this is eh, the tap water head will do a disinfection treatment, so it will have these things, and then there will be some white hard lumps, which will be in the water for a long time, is it all too alkaline.

There is white sediment in the tap water, which is an impurity from the water supply pipes, or bleach added by the water supply plant to the water, which disappears when left to rest.

After boiling hot water, there will be white sediments, which are scale, and these white sediments are mainly calcium carbonate and magnesium carbonate.

This is when the water is treated, some bleaching powder will be put in, and the concentration may be too high, so you will be able to see it when you release it here.

It should be the phenomenon of sewage in the tap water, and it is recommended that you report it directly to the water company, and it is best not to use such water first.

Why is there a white mattress at home, the position is the kind of sediment at home, maybe it is the scale that has passed, right? It's pretty good. Bye-bye, do the clothes look good?

It's pretty good. What are you doing if you're not busy? White precipitate.

You know those words. Big. Two.

Above. Under. What is the reason why there is a lot of white cotton material in the tap water at home?

Some of the substance crystallizes and then heats it up after the paste is finished.

In this case, you can ask your neighbors if this is also the case, see what the reason is, or you can buy a filter to use, it is safer.

Scale.

These white precipitates are commonly known as water bases.

It is formed by the decomposition of bicarbonate in water when it is heated, mainly calcium carbonate.

and magnesium carbonate. In fact, these white sediments are a reaction of the hardness of the water quality, and the presence of sediment indicates that the water quality is hard, and from the safety aspect, the water on the sediment will not cause harm to the human body, and it can be drunk with confidence.

Tap water precautionsAccording to the "National Health Standards for Drinking Water", the zinc and iron content in 1 liter of tap water that meets the safety standards is generally less than milligrams, and adults need to supplement zinc 10 mg 15 mg and iron 12 mg and 18 mg per day. Even if we drink 5 liters of water a day, the trace elements we consume from tap water.

Most of them are less than 1 milligram, which is insignificant compared to the trace elements required by the human body.

In addition, tap water in some areas contains calcium and magnesium.

It is higher, but after boiling, a lot of precipitation will be lost, leaving a small amount of which is good for the human body. We advocate the protection of water resources, and we should pay attention to water conservation.

Water quality should also be kept an eye on.

The above content refers to Encyclopedia - Tap Water.

Scale. Scale, commonly known as "rust, water alkali", refers to the white lump or powder substance gradually formed by the mineral contained in hard water after boiling in the container (such as pot, pot, etc.), and the main components are calcium carbonate, magnesium hydroxide, magnesium carbonate, calcium sulfate, magnesium sulfate, calcium chloride, magnesium chloride, etc.

The thermal conductivity of scale is very poor, if the scale formed in the boiler is too thick, it will lead to the reduction of boiler efficiency, and in the worst case, it will cause boiler pipe burst and cause boiler accidents.

For example, the staff said that if the tap water is boiled, it is very likely that it is the precipitation of some calcium oxide and magnesium oxide.

But for the staff, Mr. Zhang also raised his own questions: "It turns out that there are no such things, from the property after brushing the water tank, there are these white things, floating objects, and the things in the water can't be eaten!" ”

In order to completely solve Mr. Zhang's troubles, the staff of Qiqihar Water Group took samples at Mr. Zhang's home and prepared to take the tap water for relevant water quality testing.

Liu He, deputy director of the water quality testing center of Qiqihar Water Group: We will take it back to test the water hardness and other aspects to see if there is any problem with the water quality.

In daily life, we need to use tap water every day, whether it is washing our hands, cooking or bathing, these are all necessary. I don't know if you have found white sediment in the water when you use tap water, so let's talk to you about what the white sediment in tap water is?

The white sediment in the tap water may be hard water, and in layman's terms, the water contains some trace elements such as calcium, iron and zinc, as well as carbonates. They will settle in the water, which is still a bit harmful to our body. Through the introduction of the appeal, I believe everyone already knows what the so-called white sediment is.

Bring the water to a boil.

This white powder should be limescale, and it is normal for this phenomenon to occur in boiled water. Due to the high hardness of groundwater in Shijiazhuang, the scale phenomenon is more serious after the tap water is boiled, but the composition of scale is calcium carbonate.

It will not cause harm to the human body without exceeding the standard.

If the user finds that there is a white sediment in the water flowing from the water pipe, it may be related to the need to clean the pipe that transports the tap water, and the water quality may be affected in this case, and the user can report it to the jurisdiction management department.

Tap water has white precipitates of calcium carbonate and magnesium carbonate. It reflects the hardness of the water quality, which is often found in the northern part of our country. In the north, the precipitation is relatively small, and the groundwater is the main drinking water, the deeper the well, the higher the mineral content in the water, the more sediment in the water after boiling, this water can be drunk after a while of precipitation, and the boiling water boiled in the tap water has precipitation is also for this reason, and it can also be drunk.

It is inevitable that the water contains some organic pollutants, so when boiling water, when the water begins to steam and is about to boil, open the lid of the pot, which can volatilize some harmful substances and make the boiled water healthier. Some people boil water and turn off the heat as soon as the water is boiled, but it would be better if it could be boiled for another 2 minutes, because this can eliminate harmful substances more thoroughly. When boiling water, do not turn on the faucet and immediately connect the water, but should release some of the water first, because the first water will contain some rust pollutants in the pipes, and the stagnant water left in the original pipes, try not to drink.

The white sediment in tap water is limescale.

Scale, commonly known as "rust and alkali", refers to the white lump or powdery substance gradually formed by the mineral contained in the container after boiling in hard water, and the main components are calcium carbonate and magnesium hydroxide.

Wait. The hazards of limescale.

1. The thermal conductivity of scale is very poor, which will lead to the deterioration of heat transfer on the heating surface, thus wasting fuel or electricity.

2. If the scale adheres to the heating surface of the thermal equipment, it will endanger the safe and economical operation of the thermal equipment. Because the thermal conductivity of limescale is very poor, it hinders heat transfer. The heat absorbed by the furnace tube from the flame side cannot be well transferred to the water, and the cooling of the furnace tube is affected, so that the wall temperature rises, causing the furnace tube to bulge and cause a burst pipe.