The production of distilled water is to boil the source water and make it evaporate and condense for recovery, which consumes a lot of heat energy and the cost is not too low. Distilled water, such as phenols, benzene compounds that are harmful to health, and even vaporizable mercury. In order to obtain pure water or ultrapure water, two or three distillations must be added and other purification methods must be added.
However, distilled water for drinking on the market is unlikely to do so, nor is it necessary to do so.
At the same time, drinking distilled water often means giving up the source of 5% of the trace elements needed by the human body from water.
If there is no volatile toxic substances such as benzene, phenol or mercury in the raw water, it will be fine, so distilled water can be drunk, but the benefits to the human body are not as good as mineral water.
Drinkable, non-toxic. However, do not drink it often, it is not recommended to drink it. Long-term drinking of distilled water will have the following health and safety hazards:
1. Distilled water is water obtained by heating to evaporation and condensation of water vapor. It is relatively pure sanitary water and is often used to prepare pharmaceuticals and chemical reagents, but it is not suitable for drinking water.
Can I drink distilled water?
1. When distilled water is heated and boiled for a long time, part of the nitrates in the water will become nitrites, and the nitrites will denature the hemoglobin in the blood, thereby reducing the blood pressure, and in severe cases, it will cause blood loss.
2. Distilled water loses many minerals needed by the human body during the distillation process. If a large amount of distilled water is consumed for a long time, it will cause symptoms such as chest tightness, nausea, diarrhea, physical decline, and impatience, which will endanger human health.
3. Distilled water does not have the mineral elements magnesium, sodium and calcium needed by the human body, which is not good for the human body. Long-term drinking will lead to the loss of inorganic salts in the human body.
4. Distilled water is an active absorption medium. When it comes into contact with air, it absorbs carbon dioxide and makes the water sour. The more distilled water you drink, the more harmful your body's acidification will be.
How to make distilled water
First, the production method of distilled water
1 After the water is distilled once, the non-volatile components (salts) remain in the container to be removed, and the volatile components (ammonia, carbon dioxide, organic matter) enter the initial fraction of distilled water, usually only the middle part of the fraction is collected, accounting for about 60%.
2 Times distilled water
To get purer water, add alkaline potassium permanganate solution to primary distilled water to remove organic matter and carbon dioxide; add non-volatile acid (sulfuric acid or phosphoric acid) to make ammonia a non-volatile ammonium salt. Since glass contains a small amount of water-soluble components, when performing secondary or multiple distillations, a quartz distillation vessel must be used to obtain very pure water, and the obtained pure water should be stored in a quartz or silver container.
What are the advantages of distilled water
Water in nature is not pure, usually containing calcium, magnesium, iron and other salts, as well as organic matter, microorganisms, dissolved gases (such as carbon dioxide) and suspended solids. The non-volatile components can be removed by distillation. Distillation method and the following measures can be used to obtain higher quality distilled water.
①Drain the initial fraction (about 20% of the raw water), because the volatile components are mainly concentrated in the initial fraction.
②Drain the residual part (about 20% of the raw water), because many non-volatile components are concentrated in the residual water.
③Add certain substances to facilitate distillation. For example, adding NaOH makes CO2 in water a less volatile component, and adding KMnO4 can oxidize organic matter in water.
What are the advantages of distilled water?
The production of distilled water is to boil the source water and make it evaporate and condense for recovery, which consumes a lot of heat energy and the cost is not too low. Distilled water. Such as phenols, benzene compounds that are harmful to health, and even vaporizable mercury. In order to obtain pure water or ultrapure water, two or three distillations must be added and other purification methods must be added.
But distilled water for drinking on the market is unlikely to do so, nor is it necessary.
At the same time, drinking distilled water often means giving up the source of 5% of the trace elements needed by the human body from water.
The distilled water device used in the laboratory is that the tap water is heated by electricity to cause boiling, and the vapor is condensed into distilled water through the condenser, and collected.
