water

water

Water is the source of life and an indispensable part of our lives. It can be said that we cannot live without water, that is, our "great heroes", everyone should respect it. However, has humanity really done it?

Water is one of the most abundant compounds on earth. About three-quarters of the world's water is covered by water. The total volume of water on the earth is about 1.386 billion cubic meters, of which 96.5% is distributed in the ocean, and fresh water is only about 3,500 kilometers. If you deduct the unreachable glaciers and the ice caps on the high mountain tops, as well as the amount of water distributed in the saline-alkali lakes and the inland seas, the water on the land and the rivers are less than 1% of the total water. These data and data are sufficient to demonstrate the importance of freshwater resources. Let us analyze it from a scientific perspective. A tightly closed faucet drains 1 to 6 cubic meters of water a month, and a leaking toilet drains 3 to 25 cubic meters of water a month. The waste of household water is so heartbreaking! Experts say that if urban households in the country replace toilets or showers with water-saving products, they can expect to save 490 million tons per month. In the face of frequent national water use situations, the water-saving actions of each family are indispensable for building a conservation-oriented society. There is a lot of hidden waste in household water. Taking Beijing as an example, the Beijing Water Conservation Office survey shows that Beijing residents’ water consumption is seriously exceeded, and users with water consumption of more than 8 tons/month account for 50% to 80% of the total users. Among them, household laundry water waste accounts for a considerable proportion. According to statistics, laundry water accounts for 1/3 of all household water. Generally, the average washing machine washes clothes with water between 150-180 liters. At present, the number of social washing machines in urban areas in China is about 120 million units, which is roughly estimated at three times a week. All washing machines consume at least 3 billion cubic meters of water per year. If these washing machines are all replaced with water-saving washing machines, about 714 Kunming Lakes or 93 Huairou Reservoirs can be saved in one year. There are many bad water habits in ordinary families. For example, use a toilet to wash off the cigarette butts and shredded waste; wash the potatoes and carrots before peeling; rinse and pick vegetables; use water to open the door, answer the phone, change the TV channel without turning off the tap; forget to turn off the tap when you stop the water. When the water comes, no one is in the water; when washing hands, brushing your teeth, washing your face, you don’t turn off the tap, and so on. Water-saving experts analyze that as long as these bad habits are changed, they can save about 70% of water, saving not only for themselves but also for the society. But if you change the bad habit of using water, you can save about 70% of water! After reading these scientific data, I believe that everyone should understand the dangers of wasting water, so let us start small things together, save water and create a better tomorrow!

Second day: Nangong Tianyu