1. Hydroelectric power plants encircle rivers and raise the water level to increase the potential energy of the water and produce electricity through the difference in potential energy of the water. This will form a lake-like reservoir once the wastewater is released. upstream, it's going to accumulate here, so it can be managed easily. It's very difficult.
2. The construction of hydroelectric power plants destroys the original natural environment, making normal migration of the original migratory fish impossible.
1 Indeed, hydroelectric power plants are usually built on reservoirs. In fact, there is no problem of water quality deterioration, because hydroelectric plants use water to generate electricity, so there is no problem of quality deterioration some water. If we must say that the quality of the water has deteriorated, it is perhaps because a large quantity ofThe sediment became trapped on the tank.
2 Storage of reservoir water will create a still water environment and reduce self-purification capacity; floating waste upstream is intercepted by the dam, and even some organic waste rots and deteriorates to pollute the water source; the operation of the hydroelectric plant itself will also produce irregular pollution. During the construction process, building materials such as sand, gravel, cement, etc. are used. will also increase impurities in the water. The hydroelectric power station is shown in the photo: