What about the fouling of the bottom of the kettle? Ji'nan water department: it is safe to drink for minerals
Lu net February 12th news (reporter Liu Meiting) "my hot water pot has just been boiled a few times, how did the pot bottom a layer of scale? Is it a problem with water quality? I worry that drinking such tap water will have an impact on the body. " Recently, a lot of Ji'nan netizens hit the Lu Network Hotline (0531-67753777), reflecting that their own tap water has repeatedly appeared scale. Reporters interviewed Ji'nan water group learned that through strict water quality testing and analysis, tap water scale is a normal phenomenon beneficial and harmless, the public can rest assured that drinking.
people worry that drinking water with scale is easy to sturdy and Ji'nan tap water meets the national standard
to ensure the safe operation of water supply network, reduce the detonating pipe of water supply network, seasonal adjustment of water source ratio in Ji'nan, and the opening of some groundwater, and because of the increase of groundwater content, it is especially the recent continuous low temperature, Ji'nan Zhang. Zhuang Road, Dikou Road, Jingwei area, no shadow mountain area and Yuqing water supply area (ten way) residents reflect more scale users.
"some people worry that drinking water with scale is easy to be sturdy. In fact, it is not necessary. Boiling water has a normal scale, and it has strict control on the hardness of tap water, and Ji'nan tap water meets the 106 standards of national drinking water and fully meets the national standard of drinking water." According to the relevant staff of the water service group.
the content of calcium and magnesium in the growth of the spring water is more abundant
the reporter has learned that Ji'nan belongs to the water supply city with multiple water sources, coexist in the Yellow River water, mountain reservoir water and groundwater. According to the GB5749-2006 national standard of drinking water, the index of total hardness of tap water should not exceed 450 mg/L. CaCO3), the existing tap water indexes are all up to the national standard. So why is the country's standard set at 450? Is it safer to set lower and less water and alkali?
according to the relevant staff of the water affairs group, the national standard is set at 450, according to 1 people's 2 liters of water a day, drinking 70 years to do the health judgment. "In fact, scale is mainly calcium and magnesium precipitate in water. As a mineral, it is very good for our bones growth and strong teeth. Therefore, it is not necessary to remove calcium and magnesium ions in the water with national hardness.
but because of the different hardness indexes of each water source, the mineral salts and processing technology are different, and the scale of the scale is slightly different after the running water is fired. The staff said that the water scale of the Yellow River is less, lighter yellow and easier to deposit. Ground water scale is more, pure white, sometimes powder like, floating in the water, after a long time to sink into the bottom of the water, "Ji'nan people have a long cherished wish for drinking spring water. At the edge of springs, you can see many kinds of municipal vessels for spring. However, due to the spring water spewing from the underground rock strata, its calcium and magnesium and other trace elements are extremely rich, and its hardness is above 300mg/L. After burning, the public will form scale, or there will be white floats on the boiling water. "
tips: some ways to reduce scale.
place some rough material in the kettle. Because calcium and magnesium are easily deposited on some rough objects in the water, the consumers can put the towel gourd and gauze in the boiled water pot and replace it after a period of time.
after boiling, precipitate and drink again.
after boiling, do not pour into the container immediately, then slightly irrigate and then recharge. In addition, the remaining water of the container should be removed and the inner wall of the kettle should be cleaned.
after blending with pure water and drinking
because of the fast pace of modern people's life, the conditioned families can buy some bottled pure water and tap water to boil. Take Beijing as an example, if the total hardness of water is about 300mg/L, people can use the ratio of 2 to 1 to blend, that is, two pure water and one tap water, when the hardness of the water is below 100mg/L, the hardness of the water will not be too much, and the taste is relatively slippery, suitable for mixing water, such as making tea, Flush milk powder, coffee and so on.