This is industrial wastewater.
Wastewater containing coal can be classified as a type of industrial wastewater. Industrial wastewater refers to wastewater containing pollutants produced during industrial production processes. Coal-containing wastewater refers to wastewater generated during coal mining, coal processing, coal-fired power generation, etc.
During coal processing, wastewater may contain solid waste and chemical substances such as coal gangue, coal ash and cinders. Wastewater discharged from coal-fired power plants can contain coal ash, ash, coal waste, and combustion pollutants, which can harm the environment and ecosystems.
It depends on the water you use. There are many types of water inpower plants. There are raw water, primary treated water, refined treated water, etc. If it is recycled water, it is not recommended for swimming. It can be used whether it is raw water or refined water. Regarding the steam used by power plants for electricity generation, it can in principle be used, but I personally think that it should be distinguished according to the actual situation of the power plant. Some power plant boiler waters have been spiked with chemicals. Specific situation, specific analysis.