The decolorizing agent is white or blue particles, and the main component is silica. It breaks the complex process of decolorization and deodorization of traditional acid, alkali and clay, and directly filters out impurities and oxides in oil products by means of filtration. It is used for decolorization of textile, printing and dyeing, printing ink, leather, rubber, coking, papermaking, pharmaceutical and other wastewater. The decolorizing agent with general component formula is polyaluminium chloride, And other metal salts with cations. In addition, there is a high-efficiency decolorizer, which integrates impurity removal, odor removal, decolorization and separation, so as to turn the blackened oil into a light and transparent liquid. The acid value and chromaticity of processed diesel meet the fuel standard