China is a country with less oil and less coal. Under the background of rapid development of the national economy, the demand for energy in various industries continues to increase, and the development of the coal chemical industry is facing a very considerable situation. Since coal chemical industry is characterized by large water consumption, maintaining the production process of coal chemical industry will inevitably produce a large amount of sewage. However, China's coal resources and water resources are reversely distributed. In areas with abundant coal resources, water resources are often scarce. Therefore, the process is reasonable and economically feasible, so that the wastewater treatment scheme that can recycle the treated sewage will bring huge economic, social and environmental benefits to the coal-fired enterprises with high water consumption.

After ten years of rapid development, the new coal chemical industry has gradually matured, but to some extent, there are still “four highs” problems of high coal consumption, high water consumption, high carbon emissions and high wastewater discharge, and the distribution of coal resources in China. The situation and the construction site of the new coal chemical industry, the most prominent problem in the “four highs” is high water consumption and high wastewater discharge. At present, the society is controversial about the coal chemical industry. However, because it is an important part of the national energy structure, it cannot be arbitrarily banned. Instead, it should combine the characteristics of coal chemical industry and seek solutions to break through the bottleneck of the development of new coal chemical industry. Water constraints. Therefore, starting from the whole process of coal chemical industry, it is of great significance to seek a comprehensive approach to the comprehensive utilization of coal chemical water resources in the future.