How to remove scale from hot water bottles Here are some simple recipes for removing scale from hot water bottles. I hope everyone can learn something.
1. Use 250g vinegar, heat it, pour it into a thermos, soak it for a few hours, and then shake it up, down and left and right, and the scale in the bottle will fall off.
2, can be poured into the concentration of 1% baking soda water about 500 grams, gently shake and rinse, scale can be removed.
3. Take 200 grams of dilute hydrochloric acid and soak it in the bottle for a while, then shake it to remove the scale in the bottle.
4. Grab a handful of mung beans and put them in a thermos bottle, then put some water, plug the bottle mouth, shake it a few times, pour out the mung beans and water, and then rinse it with some clear water.
Put some pieces of paper in the bottle, then pour in warm salt water and shake it gently for a while to remove the scale.
6. Take a little tea, put it in a thermos bottle, then pour boiling water and cover it with a cork. 15 ~ 20 minutes later, you can drink it. The scale in the bottle will fall off and sink to the bottom of the bottle under the action of theophylline. Soak a few times more, and the effect will be better.
7. Gently break two egg shells, put them into a bottle, then put them into a half-tea jar filled with cold water, plug them with a cork, hold them with one hand, hold the bottleneck with your thumb and other fingers, and hold the bottom of the bottle with the other hand, and rotate them up and down, left and right. For about 20 seconds, remove the cork, pour out the eggshell and rinse it twice with clear water.
8. Pour the cooked noodles into the bottle, shake it for a few minutes, then pour it out, and then rinse it with clear water.
9. Take some sunny leaves or pumpkin leaves and cut them into pieces with a square size of 3 cm to 4 cm, put them in a bottle, add a little cold water, gently shake the thermos bottle a few times, pour it out and wash it with clear water.
The harm of scales to human health is 1. It is easy to cause gastrointestinal digestion and absorption disorders and urinary system diseases, such as constipation. At the same time, if the scale is serious, it will also lead to gastritis and various stones, such as kidney calculi and urethral stones. And tartar and periodontitis are also related to scale to some extent.
2. Secondly, when the scale is cemented, a large number of heavy metal ions are often attached. If the container is used to hold drinking water, there is a risk that heavy metal ions will dissolve too much in drinking water.
At the same time, scale has great influence and harm on people's lives. First, the poor thermal conductivity of scale will lead to the deterioration of heat transfer on the heating surface, thus wasting fuel or electricity. Scale usually adheres to the surface of containers or pipes. When domestic water is used, if the kettle is full of scale, it will affect the boiling power of about 30% and consume more electricity, including electric water heaters. For example, the monthly cost of boiling water is calculated in 30 yuan, and 10 yuan is the waste caused by scale.
2. Secondly, if the scale is cemented on the inner wall of the water heater or boiler, it will expand when heated and contract when cooled, which will greatly increase the risk of bursting or even explosion of the water heater and boiler.
The formation of scale water containing minerals such as calcium (Ca) and magnesium (Mg) salts is called "hard water". Rivers, lakes, wells and springs are all hard water. Tap water is obtained from rivers, lakes or well water after precipitation, sediment removal and disinfection. Hard water, too. Fresh rain and snow, the water does not contain minerals, is "soft water." After the water is boiled, part of the water evaporates, and insoluble calcium sulfate (CaSO4, gypsum is calcium sulfate containing crystal water) is precipitated. The original dissolved calcium bicarbonate (Ca(HCo3)2) and magnesium bicarbonate (Mg(HCO3)2) are decomposed in boiling water, releasing carbon dioxide (CO2), which becomes insoluble calcium carbonate (CaCO3) and magnesium hydroxide (Mg(OH)2), and also precipitates out. This is the origin of scale.
According to the formation reason and state of scale, scale can be roughly divided into hard scale and soft scale. When water contains impurities such as carbonate colloid, bacteria and organic matter, carbonate is similar to sand in cement mortar, while colloid, bacteria and organic matter are equivalent to cement in cement mortar. Viscous substances such as colloid, bacteria and organic matter in water interact with carbonate to form hard scale attached to the container (or pipeline surface) when boiling at high temperature. Once colloid, bacteria, organic matter and other viscous substances (such as ultrafiltration) are removed, even if the concentration of calcium, magnesium ions and carbonate ions in water is very high, only white, loose and easy-to-remove carbonate soft scale will be generated, and no hard scale will be generated.