First of all, it is an inevitable requirement to achieve sustainable development. In the 21st century, human society pays more attention to the quality of life and advocates a sustainable long-term development model. Therefore, environmental protection and industrial and commercial development are on an equal footing. Coal-containing wastewater from power plants cannot be perfunctory at will. Especially in the context of the declining level of freshwater resources in the world and the increasing application of groundwater exploitation, coal containing wastewater materials need to be properly treated.

Secondly, it is an inevitable requirement to improve the operation quality of power plants. In the process of thermal power generation, fuel supply, water supply, cooling and other processes will involve coal source combustion and water source access. In relevant processes, coal and water are easy to mix, affecting the work quality of the power plant itself. For example, after being squeezed by the coal mill, the coal lump becomes pulverized coal and coal particles, which are easy to be mixed into the water conveyance system, affecting the work of the steam-water system; After washing the coal slag with water, the water quality of the water conveyance is greatly reduced, etc.. In addition, the treatment of coal-bearing wastewater will consume a certain amount of capital of the power plant company. From this point of view, promoting the development of new technologies for coal-bearing wastewater treatment is of great significance for improving the operation of the power plant itself.

Finally, it is an inevitable requirement to promote the scientific research and exploration work related to power plants. In the actual power generation process, the power plant not only consumes more water resources and coal resources, but also pollutes the atmosphere, soil and water. It is urgent to deepen scientific research in order to reduce external pollution emissions and improve the efficiency of thermal power generation. In addition, due to the large human, material and financial costs of traditional treatment methods such as physical precipitation, and the treatment costs are not small. Therefore, in order to promote the relevant scientific research work of the power plant, it is necessary to explore the treatment methods of coal-bearing wastewater, reduce the treatment costs and improve the quality of external discharge.