Dispersed dye in-situ mineralization and deep water conservation emission reduction dyeing aftertreatment method and additive

The invention discloses a dispersed dye in-situ mineralization and deep water conservation emission reduction dyeing aftertreatment method which comprises the following steps: firstly, putting a fabric to be dyed into dyeing equipment, adding dyeing water into the dyeing equipment, and keeping circulation of a dye bath; performing conventional dyeing processing on the fabric to be dyed in the dyeing equipment by using dispersed dye and using a high-temperature high-pressure dyeing method, and after dyeing is completed, retaining the residual dyeing bath; further simultaneously performing in-situ mineralization treatment on the residual dyeing bath and the dyed fabric; finally storing the residual dyeing bath obtained after the treatment as later dyeing water, and dehydrating and drying the dyed fabric, thereby completing the whole aftertreatment process. The invention further discloses three additives used in the dyeing aftertreatment method. By adopting the aftertreatment method disclosed by the invention, later reduction washing and water washing after dyeing can be avoided, the residual dyeing liquid after the in-situ mineralization treatment can be further reused in later dyeing treatment, and thus the water consumption and the pollutant discharge amount of the whole dyeing treatment can be greatly reduced.