By building sand walls on both sides of the upper reaches of the Yellow River, can the water of the

Building sand walls on both sides of the upper reaches of the Yellow River, the Yellow River water cannot be turned into clear water, and the basins through which the Yellow River flows are places where the water and soil are easily eroded, which will take away a lot of sand and soil.

I don't think it's possible, because if you build a wall in the upper reaches of the Yellow River, there will still be more or less sand and soil entering, so you still can't reach the real clean water, and the real clean water still needs to work hard.

No, building sand walls on both sides of the upper reaches of the Yellow River will only prevent some of the sand from flowing into the Yellow River, and there are many other reasons why the sand flows into the Yellow River, and the Yellow River water will not become clear water.

It is unlikely that it will become clear water, but the construction of sand walls on both sides of the upstream should reduce the inflow of yellow sand and make the water clearer than before, but it is not very likely to block it completely, after all, there are other ways for sand to enter the Yellow River.

It should be impossible, because there is a lot of sediment in the places where the water of the Yellow River passes, and it is the same all the way down, and it is very implicated to change it, which cannot be done with the current technology.

At present, the problem of water pollution in the Yellow River Basin is still quite serious, and the total amount of sewage discharge has surged from an average of more than 2 billion tons per year in the 80s of the last century to about 4 billion tons now, almost doubling. The annual emission of chemical oxygen demand is about 1.4 million tons, and the emission of ammonia nitrogen is 1.34 million tons per year, which exceeds about 1 3 and about 1 times of the water environmental capacity of the Yellow River, respectively. The proportion of the Yellow River's five categories and five categories of inferior water quality remains high, and accidents caused by the deterioration of water quality occur from time to time.

Especially in the Huang-Huai-Hai region, where water resources are very scarce, inferior water bodies account for 40 to 50 percent, which further aggravates the contradiction between supply and demand of water resources. According to the Ministry of Water Resources, there are currently more than 300 water-scarce cities in China, with more than 100 million people affected; More than 300 million people in rural areas have unsafe drinking water, of which about 100 million people drink excessive levels of harmful substances, more than 63 million people drink high-fluoride water, 2 million people drink high-arsenic water, and more than 38 million people drink brackish water. The excessive content of harmful substances in drinking water is a very prominent problem, and there is a trend of increase, resulting in the safety of drinking water for the people and the threat to their health.

Generally speaking, in some areas and river basins, water pollution has shown a trend of extending from tributaries to main streams, from urban to rural areas, from surface to underground infiltration, and from land to sea.

With the increase of economic development and economic aggregate, the total amount of wastewater discharge has grown rapidly, and the total amount of pollutant discharge exceeds the capacity of the water environment, especially in some densely populated, densely populated areas or areas with heavy pollution enterprises, as well as some cross-provincial river basin areas, this problem is particularly prominent, and the task of pollution prevention and control is very arduous

The phenomenon of excessive water quality is relatively common, and the deterioration of water quality in some key river basins has become more prominent. The organic pollution of drinking water sources is becoming more and more serious, and the safety of drinking water has emerged, affecting the production and life of the people. The problem in the Huaihe River valley has aroused the attention of the whole society, and we should also pay attention to some other key river basin areas, and the State Environmental Protection Administration should join hands with relevant departments to strengthen environmental management in key river basin areas.

Some industries, such as papermaking, printing and dyeing, chemical industry, etc., often pollute an area or even a river by an enterprise, and the social impact is relatively large. Although some regulations have been promulgated for some industries, how to comprehensively and thoroughly solve the problem of water environment pollution in heavily polluted industries still needs to be studied in depth.

Environmental emergencies occur from time to time, environmental hazards increase, and pose a threat to the safety of people's lives and property, while the corresponding emergency response mechanism for water pollution accidents is still in the process of being established, and it is difficult to play an effective role in the short term.

Benefits, in Dongying City, Shandong Province, tens of thousands of acres of land reclamation at the mouth of the Yellow River every year, Zhengzhou area uses the sediment of the Yellow River to build a famous inkstone;

The disadvantage is that it has caused the world's largest hanging river, endangering several provinces of Shaanxi, Henan and Shandong, and has broken and swung into the sea many times in history.

The Yellow River is the second longest river in China, the fifth longest river in the world, and the river with the highest sediment content in the world. It is known as the "mother river" of China. With a total length of 5,464 kilometers and a basin area of 752,443 square kilometers, the Yellow River is the second largest river in China after the Yangtze River.

Because the middle section of the river flows through the Loess Plateau region of China, it carries a large amount of sediment, so it is also known as the river with the most sediment content in the world. However, in Chinese history, human civilization along the Yellow River basin has had a great impact and is one of the most important birthplaces of the Chinese nation, so the Chinese generally call it the "mother river". The Yellow River is the second longest river in China, the fifth longest river in the world, and the river with the highest sediment content in the world.

The Yellow River flows through nine provinces and meanders through northern China. Looking down from the sky, it is very much like a huge "several" character, and faintly like the unique totem --- dragon of our nation. The source is located in the Yaradazai Peak of the Bayan Kala Mountains in Qinghai, with a main stream length of 4,675 kilometers and an average flow of cubic meters per second, which flows into the Bohai Sea in Kenli County, Dongying City, Shandong Province.

The dividing point between the upper and middle reaches is Hekou Town in the Inner Mongolia Autonomous Region, and the boundary point between the middle and lower reaches is Jiumengjin in Henan Province. The estuary of the Yellow River is 1,500 meters wide, generally 500 meters, only 50 meters in the narrower places, the water depth is generally meters, and the depth in some places is only meters. The Yellow River originates from the Bayankala Mountains on the Qinghai-Tibet Plateau, and its main stream runs through nine provinces and autonomous regions, namely:

Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shanxi, Shaanxi, Henan, Shandong, into the Bohai Sea. The annual runoff is 57.4 billion cubic meters, and the average runoff depth is 77 mm. However, the amount of water is not as large as the Pearl River, there are 35 major tributaries along the way, the larger tributaries are in the upper reaches, there are Huangshui and Tao rivers, in the middle reaches there are Qingshui River, Fen River, Wei River, Qin River, and in the lower reaches there are Yi River and Luo River.

The lack of lakes on both sides and the high riverbed make it difficult for few rivers to flow into the Yellow River, so the area of the lower reaches of the Yellow River is the second longest river in China, the fifth longest river in the world, and the river with the highest sediment content in the world.

The troubles of the Yellow River are manifested differently in the upper, middle and lower reaches

The upstream is mainly manifested in grassland degradation and desertification, the main problem in the middle reaches is serious soil erosion, and the downstream is in danger of bursting the embankments on both sides due to the formation of "above-ground rivers".

In view of the current situation of environmental damage and fragile ecology in the upper and middle reaches, attention should be paid to protecting the ecological environment, such as setting up nature reserves in the upper reaches and strengthening ecological construction; In the middle reaches, we should vigorously carry out soil and water conservation work, vigorously plant trees and grasses, such as damming and silting the land, and building terraces, so that the soil does not go downhill and the clear water flows for a long time; In addition to reinforcing the embankment, the downstream area should also pay attention to dredging and give full play to the role of water conservancy projects in preventing and reducing dredging.