Science 10 questions
01
Why protect the water to drink it
The secretary-general of xi has made several important statements on water safety, clearly proposing the idea of “water conservation priorities, spatial balance, system governance, dual-handedness”. We are one of the most complex and challenging countries in the world in terms of water availability and distribution over time and space。
Water is not an unlimited supply of resources and must be conserved and protected in such a way as to balance surface water and groundwater in river and lake reservoirs (which we call “big water”) with piped water for each household and bottled water purchased in supermarkets (which we call “small water”). Only when the “big water” is protected and the water source is well, the cost of running water plants will be significantly reduced, and the “small water” that people drink will be more affordable and safer and healthier。
02
What water problems do we have
(a) water-rich floods, which in a few years will report major floods, such as the floods of the wuhan yangtze river in 1998, the heavy rains of 7/21 in beijing in 2012, and the heavy rains of 7. 20 in zhengzhou in 2021
(b) low water — drought is a problem, many cities are experiencing rapid development and lack of water, and sometimes drought in the seemingly water-free lake luang region has resulted in water shortages for crops, and the pressure for water is high until the north of beijing is reached
Water pollution - water pollution, which has resulted from the rapid development of various industrial enterprises since the reform and opening up
(a) pumping of water - erosion, such as the steep slopes of the yellow highlands and the heavy erosion of forest land in the upper yangtze
We are currently facing three major new water problems: water scarcity, water ecological damage and water environmental pollution。
03
How do we start with water conservation
The first is physical commitment and active action to bring water conservation to the forefront of society. Every drop of potable water comes from a mountain crossing and a long way. • advocacy for operation light bottle, which insists on drinking the last sip from the bottom of the bare bottle and taking the bottled water with it. When organizing meetings, every effort is made to arrange for bottled water, one bottle is served and another bottle is provided; meetings are attended, as far as possible, by bringing water cups, less paper cups from public cups, and water and paper cups are saved。
The second is to be fully engaged and inclusive, allowing civilized water to shape new ways of life. To insist that the kitchen saves a bowl of water, the bathroom saves a barrel of water, the laundry saves a bowl of water and fosters a good habit of saving water; that the water that attempts to feed fish is used to water the flowers, the water to wash the dishes, the water to wash the face is used to drag the ground and to create a virtuous cycle of water。
Third is the implementation of the code of water conservation conduct for citizens, jointly issued by the ministry of water, the central civilization office and others. Incentives, rectification of bad behaviour around them, in the words and deeds of their own civilizations, create new patterns of water conservation。
04
How can water resources be protected per household and per inhabitant
Within the protection of rivers and lakes:
The first is to refrain from dumping, dumping, dumping, storing, burying waste and other pollutants, from discharging sewage into rivers and lakes and from blowing up, digging wells, making messes and removing soil。
Second, please refrain from cleaning vehicles, containers and packagings containing oil, toxic contaminants and from fishing, electric fish, toxic fish and river-covering activities。
Thirdly, please do not pour water-contaminated items such as cleaning vehicles, clothing, sewage, garbage into rivers and lakes。
Fourthly, each of the water works and facilities in the riverine lake should be treated in a manner that does not damage the equipment provided for the riverine facilities, such as the berm, the shore, the gate and the pumping station。
05
Is it safe
In general, when the total hardness in drinking water (means the total concentration of calcium and magnesium ion in water) is greater than 200 mg/l, when the water is burned, it occurs, but does not affect human health within the standard limits (450 mg/l in 10,000 projects and 550 mg/l in less than 10,000 projects). For example, the total strength of the beijing tap water is around 300 mg/l, and there is dirt when it burns. Often, underground wells in the north are also contaminated when burned。
When we burn water, when the water reaches a certain temperature, the ion in the water is combined with the acid root, producing sediments such as calcium carbonate, magnesium carbonate, calcium sulphate, and so forth, thus creating water. As the water generally contains more calcium ion, the main component of the water glucose is calcium salt, so the boiler that boils the water regularly removes the glucose, which affects heat transfer. In the family, vinegar can be used to remove the water。
06
What's the harm of drinking
One is to influence digestive systems. Whatever the taste of carbonated beverages makes you feel good and exciting is carbon dioxide. A sufficient amount of carbon dioxide is resistant and sterile, but too much carbonated beverages are harmful to gastrointestinal digestion. Cold water, combined with large amounts of carbon dioxide, swells people, affects appetites and even causes gastrointestinal disorders。
The second is to cause obesity and damage to teeth. Excessive sugar in drinks is absorbed into the human body, increases the heat, makes it easy to drink and causes obesity for long-term consumption. Sugar and acids in beverages are detrimental to the development of young people's teeth and are prone to decaying teeth。
Thirdly, it leads to early osteoporosis. Coca-based beverages also contain phosphate, and calcium and phosphorus are balanced partners, and over-ingestion of phosphorus prevents calcium absorption. As a result, the frequent consumption of coke drinks reduces the stock of bone-to-calcium stocks, and osteoporosis occurs well in advance of adulthood。
07
How much do you know about water
Water accounts for 60-70 per cent of human body weight, human temperature regulation, metabolism, substance absorption, transport and discharge, all of which are dependent on water。
Water can transport all substances within the body, remove toxic waste from various parts of the body and treat them with liver and kidneys。
Water is the main lubricant of the joint gap and helps prevent arthritis and back pain。
Water can prevent genetic damage and make mechanisms for genetic restoration more effective。
Water can significantly increase the efficiency of the bone marrow immune system, so it can also increase the efficiency of cancer prevention。
Water helps reduce the incidence of heart disease and strokes。
Water restores the blood mechanisms of bone marrow and helps prevent leukemia and lymphoma。
Water can significantly improve the immune function of the body in order to counter infection and cancer cells。
08
How much water should each of us drink every day
According to the guide to food for chinese residents (2016):
At 0. 5 ~ 1, the total daily intake of water is 900 ml (milk/food + drinking water)。
Total water intake of 1,300 ml (milk/food + drinking water) at the age of 1-2。
Drinking water at 2 ~ 3 years, 600 ~ 700 ml per day; at 4 ~ 5 years, 700 ~ 800 ml per day。
Drinking water at 5-7 years, 800-900 ml per day; at 7-10 years, 1,000 ml per day。
Adults with a daily drinking water volume of 1500 - 1700 ml; breast-feeding women with approximately 2100 ml。
It is recommended that you go out and bring your own cups, less one-off。
The bottled water (barrel) in supermarkets is generally divided into three categories: drinking from natural mineral springs (gb 8537), drinking water packaged (gb 19298) and drinking pure water from bottles (gb 17323). If purchased, recommendation 1: buy more mineral water or water sources that are identified as mountain springs, and drink less pure water; recommendation 2: see where the label originated? In general, water is better in the regions of tibet, xinjiang, qinghai and north-east, where there are few people; recommendation 3: bottled water is purchased to minimize storage in car trunks, especially in the summer when higher temperatures are detrimental to bottled drinking water in plastics。
09
How does the body react to people who don't like or drink less
Occasionally, water is scarce and has very limited physical effects. But, more than people who love to drink water, drinking water for long periods of time can cause “mass change”. It is important to note that when you are thirsty, you drink water, and the body is already in a state of water shortage, so it is normal to have a “active drinking” habit。
People who do not like to drink water or who do not drink water are less likely to urinate, creating conditions for bacteria that are prone to urinary tract infections; reduced urine levels and easy stones; higher blood intensities that tend to form blood clots; defecation and constipation; the accumulation of urine acid in their bodies, which increases the risk of arrhythmia; poor fat metabolism, which is not conducive to weight loss; vulnerability to cancers such as bladders, prostates, testicles, urinary tubes and kidneys; and the risk of dissipation and decompression at flu。
10
Is the idea of drinking water when thirsty is wrong
Many people now drink water when they're thirsty, just to cure thirst. In fact, drinking water not only relieves thirst and sustains life, but also serves the needs of nutrition and health. Thirsty is a sign of water scarcity in humans, a symptom of disease。
It's a little late to refill when you're thirsty. Because when people are thirsty, the water in their body is 2 ~5 %, and there may be physical discomforts such as anxiety and less urine. When the water is dispersed between 5 and 7 per cent, skin wrinkles, hallucinations, rage and even mild comas。
It is too late to water crops if it is necessary to drink when thirsty. Drinking water for thirst can easily lead to dehydration and affect human health, a passive drinking water habit that can be described as a bad habit. Others are thirsty and do not drink water, but endure, which results in prolonged dehydration。
Savings are virtues of virtue and personal upbringing and are closely linked to the destiny of nations and nations. A canoe, a stream of water, a drop of water, a drop of water, an emphasis on economy, concern, and prophylactic
Let's hope everyone gets used to drinking water every day and saving it
