Moreover, seawater contains a lot of salt and various elements exceeding the standard, and the concentration of various substances is too high, far exceeding the hygienic standard of drinking water. If you drink a lot, some elements will enter the human body in excess, affecting the normal physiological function of the human body and even causing poisoning.
Extended data
70% of the earth's surface is covered with water, but the fresh water resources necessary for human survival are extremely limited, accounting for only 2.5% of the global total water, and the remaining 97.5% are seawater that cannot be directly drunk. Seawater desalination has become an important way to solve the shortage of water resources. According to the research data of the United Nations University, there are more than 6,543,800+600,000 seawater filtration plants in the world, which can produce 95 million cubic meters of fresh water every day, nearly half of which comes from the Middle East and North Africa.
In addition, eight countries, including Maldives, Singapore and Qatar, produce desalinated water, even more than fresh water from natural sources. By the end of 20 17, there were 36 seawater desalination projects17, with an average daily water production of nearly10.2 million tons.
People's Network-Desalination of Seawater to Solve the "Thirst" Problem
Baidu encyclopedia-seawater