In the process of paper production, a large amount of water is required to clean raw materials, produce pulp, and manufacture finished paper. Among them, the amount of water used for papermaking is relatively large. Depending on different production processes, hundreds to thousands of liters of water are required to produce one ton of paper.

In order to reduce the impact of paper mill wastewater on the environment, modern paper mills often adopt advanced wastewater treatment technologies to treat the wastewater before discharging it into the environment