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How does kettle boil water time to have scale to do? A quick way to remove scale

When the electric kettle is used for a long time, there will be a lot of scale that can't be removed, and it's easy to grow bacteria if it goes on for a long time. If there's enough water, it's white. Is it very uncomfortable when drinking water? Then how can scale be removed quickly? What's the skill to remove scale?

Is scale harmful?

The main components of incrustation are calcium carbonate and magnesium carbonate, etc. a certain amount of calcium carbonate (magnesium) is allowed in the provisions of the sanitary standard for drinking water in China, i.e. not more than 450 mg / L (calculated by calcium carbonate). As minerals, calcium and magnesium are good for our body. For example, mineral water also contains a certain amount of calcium and magnesium. Some of the calcium and magnesium ions we drink will be excreted with urine, and some will combine with some enzymes and proteins in the body to produce calcium containing proteins, which is good for our bone growth and teeth firmness.

Therefore, the hardness of water within the scope of the country, there is no need to specifically remove calcium and magnesium ions. On the contrary, for people who drink pure water or use drinking fountains for a long time, pure water without any minerals is very unhealthy.

Is it harmful to drink water with scale? Experiments show that even when scale enters people's stomach in the state of solid sediment, it will be decomposed into calcium and magnesium under the action of gastric acid. Therefore, as long as the national standards are met, people can drink the boiled tap water safely even if there is some scale. However, no one is willing to drink the dirty scale. It must be cleaned up after a long time. What are the ways to clean up the scale?

Ways to remove scale

1. Scale removal by chemical method

First of all, we need to know the components of scale, including calcium carbonate (CaCO3), magnesium hydroxide (Mg (OH) 2), magnesium carbonate (MgCO3), calcium sulfate (CaSO4), barium sulfate (BaSO4), silicon dioxide (SiO2), iron (Fe2O3 or Fe3O4).

Cause of scale formation: Ca (HCO3) 2 and Mg (HCO3) 2 are decomposed in boiling water to release CO2, which is formed.

Descaling drugs: usually dilute hydrochloric acid (HCl), hydrochloric acid reacts with insoluble CaCO3 and Mg (OH) 2 to form soluble salt.

2. Method of scale removal by hot expansion and cold contraction

Put the empty kettle on the stove to dry the water in the scale. When the bottom of the kettle is cracked or the bottom of the kettle makes a 'Bang', take the kettle off and quickly pour cold water into it, or wrap the handle and the spout with a rag and hold them with both hands. Quickly sit the dried kettle in cold water (do not let the water pour into the kettle). Repeat for 2 to 3 times, the scale at the bottom of the pot will fall off due to heat expansion and cold shrinkage.

3. Boiling taro in kettle to remove dirt

Put more than half a kettle of taro, fill it with water, boil the taro, and then boil the water, there will be no water and dirt. But we should pay attention to the inner wall of the pot after cooking, do not scrub, otherwise it will lose the function of descaling. For the old kettle which is full of scale, after boiling it for one or two times with the above method, not only the original scale will gradually fall off, but also it can prevent the scale from accumulating again.

4. Bicarbonate descaling

When boiling water in an aluminum kettle with scale, put 1 teaspoon of baking soda and boil for a few minutes to remove the scale. Or dissolve 50g of baking soda in a cup of hot water, then pour it into the bottle and shake it up and down, and the scale can be removed. Soak the coffee pot and teapot in hot water, add 3 tablespoons of baking soda, and the stains and peculiar smell can be eliminated.

5. Boiled eggs for descaling

The kettle of boiling water is hard to remove after a long time. If you boil the eggs twice, you will get the ideal effect. Because the surface of the eggshell is calcium carbonate, in the process of boiling, it will react with water and generate hydrogen chloride, which will react with the scale, thus removing the scale.

6. Scale removal of potato skin

After using the aluminum pot or pot for a period of time, there will be a thin layer of scale. Put the potato skin inside, add some water, boil, boil for about 10 minutes, then remove.

7. Removing scale from eggshell

As long as the eggshell is crushed, put into the dirty cup or bottle to be cleaned, and then drop a few drops of vinegar, shake it slowly, and then wash it with a brush, you can clean the parts that are not easy to clean at ordinary times. The tea cup is easy to accumulate a thick layer of dirt on the wall due to the number of times of tea making. Sometimes the dirt is not easy to clean. If you have a tea cup with heavy tea dirt, you may as well use the broken eggshell to clean the cup. You will find that the tea dirt on the surface of the cup can be cleaned easily!