Information on saving water resources?

The earth's water storage capacity is very abundant, with a total of 1.45 billion cubic kilometers. Although there is a huge amount of water on the earth, there is very little that can be directly utilized by people for production and daily life. First of all, seawater is salty and bitter, making it unfit for drinking, irrigation, and industrial use. Secondly, the earth’s freshwater resources only account for 2.5% of its total water volume, and of these very few freshwater resources, more than 70% are frozen in the ice caps of Antarctica and the Arctic. In addition, it is difficult to use mountain glaciers and permanent Due to frozen snow, 87% of fresh water resources are difficult to use. The freshwater resources that humans can really utilize are part of rivers, lakes and groundwater, accounting for about 0.26% of the earth's total water. Global freshwater resources are not only in short supply but also extremely unevenly distributed across regions. Distributed by region, the freshwater resources of nine countries, including Brazil, Russia, Canada, China, the United States, Indonesia, India, Colombia and Congo, account for 60% of the world's freshwater resources. Approximately 1.5 billion people in 80 countries and regions, accounting for approximately 40% of the world's population, lack fresh water. Among them, approximately 300 million people in 26 countries are extremely short of water. What’s even more frightening is that it is estimated that by 2025, 3 billion people in the world will face water shortages, and 40 countries and regions are seriously short of fresh water.

China’s total water resources are 2.8 trillion cubic meters. Among them, there are 2.7 trillion cubic meters of surface water and 0.83 trillion cubic meters of groundwater. Since surface water and groundwater are mutually converted and recharge each other, deducting the double calculation of the two, 0.73 trillion cubic meters, the amount of groundwater resources that are not overlapping with river runoff is approximately is 0.1 trillion cubic meters. According to internationally recognized standards, water resources per capita below 3,000 cubic meters are considered mild water shortages; water resources per capita below 2,000 cubic meters are moderate water shortages; water resources per capita below 1,000 cubic meters are severe water shortages; water resources per capita are severe water shortages. Less than 500 cubic meters indicates extreme water shortage. Currently, 16 provinces (autonomous regions and municipalities) in China have per capita water resources (excluding transit water) below the severe water shortage level, and 6 provinces and regions (Ningxia, Hebei, Shandong, Henan, Shanxi and Jiangsu) have per capita water resources. The volume is less than 500 cubic meters. China's total water resources are not large, ranking 6th in the world, but its per capita water resources are even less, 2,240 cubic meters, ranking 88th among 153 countries counted by the World Bank. The regional distribution of China's water resources is also very unbalanced. The Yangtze River Basin and the areas south of it account for only 36.5% of the country's land area and 81% of the country's water resources; the areas north of it account for 63.5% of the country's land area. Its water resources account for only 19% of the country's water resources. Faced with this severe water resource situation, what should we do:

1. We must have the awareness to cherish water. For a long time, people have generally believed that water is "inexhaustible". Don't know how to cherish it, and some even waste it in vain. It should be known that the per capita amount of water resources in our country is not abundant, and the regional distribution is not uniform. There are great inter-annual differences and unpredictable changes within the year. Coupled with pollution, water resources are in short supply and tap water is even more difficult to come by. Caring for water is the basis for water conservation. Only by realizing that "saving water is glorious and wasting water is shameful" can we pay attention to water conservation at all times and everywhere.

2. Develop good habits. According to analysis, families can save about 70% of water as long as they pay attention to getting rid of bad habits. There are many habits related to wasting water, such as: flushing cigarette butts and fine waste in the toilet; throwing away a lot of cold water in order to get a cup of hot water; washing potatoes and carrots first and then peeling them, or rinsing them before choosing vegetables; using water Do not turn off the faucet during intervals (when opening the door to receive guests, answering the phone, or changing the TV channel); forget to turn off the faucet during the water outage; let the water flow when washing your hands, face, and brushing your teeth; do not turn off the faucet before going to bed or going out. Check faucets; equipment is leaking and not repaired in time.

3. Use water-saving appliances. In addition to developing good water habits at home, it is important and most effective to use water-saving appliances. In order to save money, many people would rather let things go than replace water-saving appliances. In fact, paying so much water bills is even more uneconomical in the long run. Using water-saving appliances not only saves money, but also protects the environment. Isn’t that killing two birds with one stone? There are many types of water-saving appliances, including water-saving water tanks, water-saving faucets, water-saving toilets, etc. Just using a few of them will make a lot of contributions to water conservation!

4. Check for leaks and blockage. It is no joke that "a drop of water becomes a river" at home. Always check the water pipes in your home. To prevent leakage, don't ignore leaks in faucets and water pipe joints. If you find a leak, ask someone to repair it promptly or do it yourself to block the flow of water.

If there is a water leak that cannot be repaired temporarily, it is better to use the main switch to temporarily control the water flow. If you manage the faucet well and turn the faucet door smaller by half, the leakage flow will naturally be reduced, and the amount of water lost in the same time will also be reduced by half.

As far as production is concerned, especially for some industries with high water consumption, we must focus on how to optimize the operation of the water system, how to increase the concentration ratio of circulating water, and how to improve the recycling of water resources as water conservation measures. The focus of the work is to actively organize technical research to improve the comprehensive utilization rate of water; at the same time, formulate practical operating systems, implement quota management on product water consumption, and conduct assessments as a technical and economic indicator to reduce waste.

For a long time, most people have had the idea of ??saving water, but they lack specific actions and the phenomenon of lavish spending is still relatively common. Some people think that their family is big and their business is big, and since they are on the Yangtze River, they always think that this source of water is inexhaustible and they lack the sense of urgency and sense of urgency to save water. If the time comes when "water is more expensive than oil", it will be too late for us to save water.