The average water consumption per mu in the upstream Ningmeng irrigation area is above 1000 cubic meters, which is several times to ten times higher than that in the water-saving irrigation area. Even the yellow river diversion irrigation areas in Henan and Shandong provinces, which are being cut off, are flooded when there is water, and sigh when there is no water. At present, the utilization rate of agricultural water in China is generally 0.3 to 0.4, and the unit production water consumption is 2 to 2.5 times that of developed countries.
Industrial water is also seriously wasted. According to statistics, at present, the reuse rate of industrial water in China is only about 0.3, far lower than 0.75 in developed countries. The water consumption per unit GDP is 15 to 100 times that of developed countries, and the water consumption per unit of some important products is several times or even dozens of times higher than the advanced level abroad.
In addition, the water environment in China has been deteriorating in recent years. The discharge of wastewater and sewage in China is increasing at the rate of 654.38+0.8 billion tons per year, and the daily discharge of industrial wastewater and domestic sewage is nearly 654.38+0.64 billion tons.
Extended data:
In recent years, the water conservancy department has tested the water quality of about 700 large and medium-sized rivers in China, with a length of nearly 654.38+10,000 kilometers. As a result, nearly 654.38+0/2 rivers have been polluted, 654.38+0/654.38+00 rivers have been seriously polluted, and rivers have lost their use value.
Seven major rivers in China from south to north have been polluted to varying degrees. At present, more than 90% of urban waters in China are seriously polluted. There are 700 million people drinking water with excessive Escherichia coli content, 654.38+0.7 billion people drinking water polluted by organic matter, and 300 million urban residents are facing the worldwide water pollution problem.
Reference: China's water resources are seriously wasted and destroyed-Shanghai Environmental Protection Publicity and Education Center