The invention relates to a method for on-line treatment and recycle of printing and
dyeing washing waste water and a device thereof, and the method comprises the following steps: treating printing and
dyeing washing waste water by an adsorption
filtration device (3), recycling the
treated water in a washing procedure (1) directly, allowing an adsorption medium to be adsorbed saturatedly, performing regeneration by a regeneration device; allowing the regenerated waste liquid and the waste water after
backwashing to enter a superior oxidation area for further oxidation and degradation, discharging after the water reaches the standard. The device comprises a water inlet
pipe and a water outlet
pipe, and also comprises three parts of an adsorption
filtration device (3), a regeneration device (2), and a superior oxidation device (4). The method of the invention has simple operation and management, low equipment investment and running cost, and is convenient for popularization and application; During the adsorption
filtration process of the invention, no chemical
reagent is needed to be added, and no secondary
pollution is caused, and thus no additional effect on
dyeing quality is caused; The invention is applicable to the on-line treatment and recycle of dyeing washing waste water of anionic or cationic water-soluble dyes such as active dyes, acid dyes, weak-acid dyes, basic dyes, etc.