Advantages and disadvantages of Ertan Hydropower Station

Advantages and Disadvantages of Ertan Project on the Environment

Ertan Project has a huge scale, a wide range of impacts on the ecological environment and many factors involved. In order to scientifically and systematically analyze the impact of Ertan project on the ecological environment and get a correct evaluation, more than 1 qualified institutions and more than 1, researchers have conducted research for more than 4 years, forming dozens of monographs and tens of millions of words of research reports. In the overall evaluation, the natural environment and social environment are divided into two subsystems, and more than 7 environmental factors in 24 categories are selected to predict and evaluate one by one. It is concluded that the construction of Ertan Project has both favorable and unfavorable effects on the ecological environment.

environmental benefits of Ertan Project

(1) It can effectively control the flood of the Yangtze River, improve the flood control capacity of 1.5 million square meters plains on both sides of the middle and lower reaches, effectively reduce the damage of flood to the production and living environment, slow down the shrinkage of Dongting Lake, and have remarkable benefits in improving the ecological environment of the Yangtze River.

(2) Ertan Project generates 84.7 billion kWh of electricity every year, which can replace the energy of burning 5 million tons of raw coal every year, which is beneficial to both the global environment and the regional environment.

(3) Ertan Reservoir will effectively regulate the unbalanced flow distribution of the Yangtze River in different seasons, increase the downstream water quantity in dry season and improve the water quality in dry season.

(4) The reservoir will improve the climate in the reservoir area, which is conducive to expanding agriculture, expanding and improving the living environment of fish and aquatic organisms. The magnificent Ertan project and the beautiful Ertan scenery will form a new landscape.

adverse side of Ertan Project

(1) The Ertan Project on the Yangtze River has flooded 17,2 square meters of cultivated land in the reservoir area, and the resettlement project is huge and complex. If it is not handled properly, it will aggravate the ecological environment.

(2) After the dam is built, the water flow rate slows down, and the ability of natural purification and degradation of sewage decreases, which may accelerate the pollution of water.

(3) After Ertan Reservoir was formed, the law of sediment movement in the Yangtze River changed. If the reservoir is not optimized, siltation will occur in the reach of the reservoir, especially in the upstream end and downstream reach of the reservoir, which may change the riverbed shape and cause adverse effects.

(4) The formation of reservoirs will change the living environment of aquatic fish, which may lead to the decrease or even extinction of some fish, so effective protection measures must be taken.

(5) The formation of the reservoir will submerge some cultural relics; Geological disasters such as bank slope collapse may occur in reservoir impoundment, which must be disposed of in advance.