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Anonymous users2024-02-05Hard water can have a big impact on daily life and physical health.
According to the Northeast News Network, if you use hard water to wash your clothes, you need to add a lot of fabric softener to the water; If hard water is used for cleaning, the sanitary ware is prone to limescale; If you use hard water to bathe, the skin is easy to dry and tight, and the hair is easy to dry and dull; If hard water is used in electric water heaters and humidifiers, it is easy to form scale in electrical appliances, thereby increasing energy consumption and shortening service life.
People who are not accustomed to hard water occasionally drink hard water, which will cause gastrointestinal disorders, that is, the so-called "water and soil adaptation"; Brewing tea with hard water will change the color, aroma and taste of tea, and greatly weaken its drinking quality; In addition, according to the "Southern **", "hard water" such as deep well water and mountain spring water contains more minerals, and drinking too much of this water may cause kidney stones.
However, this is not to say that hard water is only bad for the human body, according to the "Xinmin Evening News", water-soluble calcium and magnesium ions are more easily absorbed by the human body than calcium tablets. In addition, there are also foreign controlled experiments that show that people who drink hard water with moderate hardness have a 25%-30% lower incidence of cardiovascular disease than those who drink soft water regularly.
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Anonymous users2024-02-04The hardness of water refers to the concentration of calcium and magnesium ions in the water, and the unit of hardness is ppm, and 1ppm represents the calcium carbonate content in the water 1 milligram liter (mg l).
Hard water has a number of drawbacks:
1。The consumption of hard water will have a certain impact on human health and daily life. 2 who do not drink hard water regularly. Occasional drinking of hard water will cause gastrointestinal disorders, which is the so-called "water and soil adaptation";
3。Cooking fish and vegetables in hard water can destroy or reduce the nutritional value of the food as it is not easy to cook;
4。Brewing tea with hard water will change the color and aroma of tea and reduce its drinking value;
5。Making tofu with hard water will not only reduce the yield, but also affect the nutritional content of the tofu.
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Anonymous users2024-02-03Categories: Health Wellness >> Health Knowledge.
Analysis: The hardness of water refers to the concentration of calcium and magnesium ions in water, and the unit of hardness is ppm, and 1ppm represents the calcium carbonate content in water 1 milligram liter (mg l).
Water is soft water and hard water, and water that does not contain or contains a small amount of calcium and magnesium ions is called soft water, and vice versa is called hard water.
The hardness component of water, if caused by sodium bicarbonate or magnesium bicarbonate, is temporary hard water (boiling temporary hard water, decomposing sodium bicarbonate, forming insoluble carbonate and precipitating, and the water changes from hard water to soft water); If it is caused by sulfate or chloride containing calcium and magnesium, it is permanent hard water and cannot be removed after boiling. Together, these two hardness are called total hardness. According to the total hardness value of water, the total hardness of 0-30ppm is called soft water, the total hardness of more than 60ppm is called hard water, high-quality drinking water is not more than 25ppm, and the total hardness of high-quality soft water is less than 10ppm.
In natural water, unpolluted rain and snow water away from the city are soft water; Spring water, stream water, river water, and reservoir water are mostly temporary hard water, and some groundwater is high hardness water.
When water droplets condense in the atmosphere, they dissolve carbon dioxide in the air to form carbonic acid. Carbonic acid eventually falls to the ground with rainwater and then seeps through the soil to the rock layers, dissolving lime (calcium carbonate and magnesium carbonate) to produce temporary hard water. This is how the hard water in the caves and near the caves in some areas is formed.
Hard water has a number of drawbacks:1When it reacts with soap, it produces insoluble precipitate, which reduces the washing effect.
This can also be used to distinguish between hard water and soft water)2Industrially, the precipitation of calcium salt and magnesium salt will cause pot scale, hinder heat conduction, and in severe cases, it will also lead to boiler **. Due to the problem of hard water, the maintenance and replacement of equipment and pipelines in the industry cost tens of millions of yuan every year.
3.The consumption of hard water can also have a certain impact on human health and daily life. People who do not drink hard water regularly occasionally drink hard water, which will cause gastrointestinal disorders, that is, the so-called "water and soil adaptation"; Cooking fish and vegetables in hard water can destroy or reduce the nutritional value of the food as it is not easy to cook; Brewing tea with hard water will change the color and aroma of tea and reduce its drinking value; Making tofu with hard water will not only reduce the yield, but also affect the nutritional content of the tofu.
So is hard water useless? No, otherwise how could so many people buy mineral water to drink. It turns out that calcium and magnesium are both macro-metal elements among the essential elements of life.
Scientists and medical scientists have found that the mortality rate of certain cardiovascular diseases, such as hypertension and arteriosclerotic heart disease, is inversely proportional to the hardness of drinking water. In fact, drinking too hard or too soft water for a long time is not good for human health. Our country stipulates:
The hardness of drinking water should not exceed 25 degrees.
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Anonymous users2024-02-02Harmless. Although hard water has a bad taste, it is harmless to the human body, and the calcium and magnesium it contains are essential elements for the human body, and most people in modern times have a low intake of calcium and magnesium.
In this sense, drinking water with high hardness can also replenish some minerals to the human body. Of course, the mineral content in hard water is far from enough for the daily needs of the human body, and the right way to replenish minerals is a balanced diet.
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