It is difficult to transfer water thousands of miles away. The world's largest aqueduct and the first tunnel crossing the Yellow River ... hundreds of thousands of builders of the South-to-North Water Transfer Project are determined to innovate and overcome world-class problems. Ensure the strength of Danjiangkou dam and keep a temperature for concrete pouring for 5 years; Through the "throat" project, the measurement error of the 3 km tunnel crossing the Yellow River is less than 50 mm; To cure "engineering cancer" expansive soil, a mud pit experiment takes three years ... 63 new materials and technologies, 1 10 domestic patents, and the South-to-North Water Transfer Project has been built into the world's largest water transfer project with "China wisdom".
In order to ensure water supply, Nanshui has become the "main" water source in many northern cities. Since the comprehensive water supply, the central line project has transferred 7.93 billion cubic meters of water. In Beijing, south water accounts for 73% of the daily supply of tap water, and the safety factor of water supply in the central city has increased from 1.0 to 1.2. In Tianjin, residents in the main urban area drink South Water, which is equivalent to adding a "lifeline" for water supply; South water was used in 37 counties of Henan 1 1 city, benefiting180,000 people; In Hebei, water consumption covers 7 prefecture-level cities and 96 water plants. The East Route Project benefited 93 districts and counties of the Yangtze River, and the total amount of water transferred to Shandong was 65.438+0.99 billion cubic meters, greatly alleviating the water shortage in Jiaodong Peninsula and Lubei area.
Ensure water quality, environmental protection is the first iron fist to control pollution. From the source of water transfer to all places along the route, pollution control and environmental protection have been continuously strengthened, with 350 new sewage treatment plants and 50 new garbage treatment facilities/kloc-0. The 426 pollution control projects identified in the pollution control plan of the eastern route have all been completed, the total amount of main pollutants entering the river has been reduced by more than 85%, the water quality of the whole line has reached the Class III water standard stably, and the Danjiangkou Reservoir in the middle route has kept above Class II water continuously, and the South-to-North Water Diversion Project has become a model for river basin pollution control. After using Nanshui, the hardness of tap water in Beijing dropped from 380mg per liter to120—130mg, and Heilonggang area in Hebei bid farewell to the history of drinking brackish water and high fluorine water.
Ecological protection and unreasonable water use structure are changing. When the south water comes, more surface water, pressure groundwater and ecological water are used, and the water resources in the receiving area are optimized. Through water source replacement, more than 800 million cubic meters of groundwater have been accumulated. Beijing's "drinking, storing and replenishing" simultaneously improves the water quality of rivers and lakes; South water in Tianjin replaces ecological water, changing emergency water supply into normal water supply, and ensuring the water ecology of Haihe River. Shandong transferred 200 million cubic meters of ecological water to Dongping Lake and Nansi Lake, and the dried-up lakes revived.
Ensure development, give priority to water saving and promote transformation. All localities along the line adhere to the principle of "saving water first, then transferring water", and decide the city by water and the production by water, so water use is no longer "willful". Beijing measures water. Last year, the reclaimed water volume exceeded 1 100 million cubic meters, and ecological water consumption accounted for nearly 30%. Tianjin carefully accounts for water consumption, and divides water into five categories: surface water, groundwater, external water transfer, reclaimed water and desalinated seawater, so as to realize differential pricing and optimize water use. Hebei took the lead in launching water resource tax reform in China this year. The water tax rate of "three high" industries is set from a high level, and water conservation is promoted through tax leverage. Accelerate the transformation of water use mode, eliminate industries that restrict high water consumption and high pollution, and a large number of emerging industries emerge. It is estimated that the output value of industry and agriculture will increase by nearly 100 billion yuan every year after the East Central Line is opened to water.
The benefits of emergency protection, drought resistance and disaster reduction are obvious. In Pingdingshan, Henan Province, the middle route project of South-to-North Water Transfer Project urgently diverted 50 1 10000 cubic meters of water, thus alleviating the "water shortage" in the city. In response to last year's drought in northern Jiangsu, the Jiangsu section of the eastern line was at full capacity, and hundreds of kilometers of drought-resistant water transfer ensured irrigation of more than 45 million mu of farmland.