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Anonymous users2024-02-06Seven standards for healthy and clean drinking water:
Clause. 1. Clean water, without any harmful and odorous substances.
Clause. 2. Nutrient water, containing essential trace elements and minerals for the human body.
Clause. 3. Small molecule water, its solubility, emulsifying power, penetrating power, metabolism and cleaning power are strong.
Clause. 4. Water rich in dissolved oxygen, dissolved oxygen can excrete toxins in the body, inhibit the growth of anaerobic cancer cells, keep us healthy and delay aging.
Fifth, the pH value is weakly alkaline, that is, the water that is weakly alkaline between can balance the pH of our body fluids.
Clause. 6. The hardness of the water is moderate.
Clause. 7. The nutritional and physiological functions of water are strong, and the metabolic power, penetration and diffusion power of water are strong, which can improve metabolic function and enhance immunity.
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Anonymous users2024-02-05To put it simply, sweet and bitter is good water.
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Anonymous users2024-02-04Drinking water refers to water that can be directly supplied to the human body for drinking without treatment. Drinking water includes clean natural springs, wells, rivers and lakes, as well as treated mineral water, purified water, etc. Processed drinking water is available in the form of bottled water, bottled water, and direct drinking water through pipelines.
Drinking water standards include "Hygienic Standard for Drinking Water" GB 5749-2006 and so on.
The water quality test items are:
1. Microbial indicators: total coliform bacteria, heat-resistant coliform bacteria, Escherichia coli.
total number of colonies; 2. Toxicological indicators: arsenic, cadmium, chromium (hexavalent), lead, mercury, selenium, cyanide.
Fluoride, nitrate, chloroform, carbon tetrachloride.
bromate, formaldehyde, chlorite, chlorate;
3. Sensory properties and general chemical indicators: color, turbidity, odor and taste, visible to the naked eye, pH, aluminum, iron, manganese, copper, zinc, chloride, sulfate, total dissolved solids.
total hardness, oxygen consumption, volatile phenols, anionic synthetic detergents;
4. Radioactivity index: total radioactivity, total radioactivity.
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Anonymous users2024-02-03There are three categories of drinking water: pure water, natural water, and pure natural mineral water. With the development of the economy and the increase of population, water resources are scarce in many areas, and the drinking water sources in some cities are seriously polluted, and the safety of residents' drinking water is threatened. The Hygienic Standard for Drinking Water (GB5749 85) issued in 1985 can no longer meet the needs of ensuring the health of the people.
To this end, the Ministry of Health and the Standardization Administration of the People's Republic of China revised the original standards and jointly issued a new mandatory national "Sanitary Standard for Drinking Water" (GB5749 2006).
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Anonymous users2024-02-021. According to international and domestic regulations, any of the strontium, lithium, zinc, selenium, iodine, bromine, metasilicic acid, etc. in the water quality that meets the tap water standards and exceeds the tap water standard, but is within the edible range, can be approved to enter the market as mineral water. Therefore, there are different types of mineral water, such as strontium, lithium, zinc, selenium, iodine, carbonic acid, silicic acid, etc.
2. That is to say, you should choose a certain mineral water according to your physical condition, and it is not advisable to consume a certain mineral water as a given drink for a long time, so as not to overload the element in the body and interfere with health. There is no health risk if you drink it during a short trip or occasionally.
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Anonymous users2024-02-01The sign of immature life is to sacrifice heroically for ideals, and the sign of mature life is to live for the sake of ideals.
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Anonymous users2024-01-31The standard of drinking water, life is inseparable from water, but water is not open mouth can drink, without treatment can be directly drunk water is drinking water, drinking water is divided into pure water, mineral water, tap water, each country has a certain standard for drinking water, this standard can not be too high nor too low.
Drinking water standards
The standard for drinking water in China is the TDS value standard of 1000mg L.
tds
Also known as the total amount of dissolved solids, it indicates how many milligrams of dissolved solids are dissolved in 1 liter of water.
The TDS value is generally lower than 1000mg L, which means that the water quality is okay, but the lower the TDS value, the better the water quality, and it needs to be further evaluated. Drinking water is an indispensable element of human survival and is closely related to people's daily life. For residents living in cities, the drinking water supply is centrally supplied by water companies.
Generally speaking, the quality of water quality is determined by the quality of the centralized water supply, and it is not an individual who can choose it. Therefore, the "Sanitary Standards for Drinking Water" promulgated by the Ministry of Health of China plays an important role in ensuring the quality of centralized water supply in China.
Purified water
Pure water is different from traditional drinking water in principle, and its advantages are: no bacteria, no viruses, clean and hygienic; Purified water contains a very small amount of trace elements, but the mineral supplement required by the human body is mainly food, and only 1% is absorbed from water.
Mineral water
Healthy water is only healthy when the minerals are moderate. For example, the iodide content in drinking water is beneficial to the human body at milligram liters, and iodine poisoning can occur when it is greater than milligram liters.
Tap water
Tap water is a kind of natural water, which is safe water, and also contains beneficial minerals in natural drinking water, which is in line with the physiological functions of the human body. However, there are secondary pollution such as aging of the pipe network and residual chlorine. If it can be deeply purified, it can be a more popular and healthy water.
Pseudoscientific water
Weakly alkaline water, small molecule water, active water, oxygen-rich water, electrolyzed water, ionized water" are all pseudo-scientific concepts fabricated or pretended to be false by merchants.
Attention needs to be paid to the purchase of drinking water
1. Brand
Large-scale enterprises and well-known brands are preferred to buy brands, drinking water has been included in the quality and safety market access management, and all products should have QS marks.
2. Look at the product label
The label of a qualified product should clearly indicate its product name, net content, manufacturer's name, address, production date, shelf life, product standard number, etc.
3. Identify the sensory quality of water
Qualified drinking water should be colorless, transparent, clear, odorless, odorless, and not visible to the naked eye. Water that is yellowish in color, turbid, flocculent precipitate or impurities, and has a peculiar smell must not be drunk.
4. Drink as soon as possible
Once bottled and bottled water is opened, it should be used up in a short period of time and cannot be stored for a long time. It is best to keep it away from light, ventilation and shade.
5. When buying water purification mechanism water, you should see the sanitary status of the machine
Records of machine management inspections and filter replacement and cleaning frequency. Try to choose the purchase with good hygiene of the machine, the inspection of the machine management, and the frequent replacement and cleaning of the filter element.
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Anonymous users2024-01-30The current national drinking water hygiene standard is the "Sanitary Standard for Drinking Water" (GB5749-2006), which was officially released on July 1, 2007.
There are a total of 106 water quality objectives specified in the standard, including four categories of water quality indicators: microbiology, toxicology, organoleptic properties, and general chemical and radioactivity.
Xi'an Water Supply Company's water supply service**029-965113, 24-hour service.
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