The standard "HG/T 5969-2021 Water-based ink wastewater treatment and disposal methods" specifies in detail the technical requirements and operation guidelines for water-based ink wastewater treatment. This standard includes wastewater collection, pretreatment, treatment process selection, treatment facility design requirements, operation control and monitoring methods, etc. It aims to guide water-based ink production enterprises to effectively treat and dispose of wastewater, ensure that the discharge is up to standard, and reduce environment pollution. Standardized wastewater treatment methods not only help to improve the environment management level of enterprises, but also effectively protect the surrounding environment and water resources.