This specialized cationic polymer decolorizing agent, formulated from quaternary ammonium and dicyandiamide formaldehyde resin, delivers high-performance wastewater treatment. It efficiently adsorbs and rapidly settles anionic color particles by neutralizing their charge, forming dense flocs. The agent effectively binds key anionic dye types, including direct, reactive, vat, disperse, and acid dyes. Its primary functions are superior decolorization, enhanced flocculation, and significant COD reduction.