Introduction

We all know that poly aluminum chloride is commonly used in sewage treatment. In fact, its effect is not only that. Because of the influence of its own chemical components, poly aluminum chloride is us…

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We all know that poly aluminum chloride is commonly used in sewage treatment. In fact, its effect is not only that. Because of the influence of its own chemical components, poly aluminum chloride is used for water-soluble dye wastewater such as reactive, direct, cationic and acidic dyes, its decolorization rate is very high; it also has a good decolorization effect on disperse dyes. The main principle of decolorization is that the components of poly aluminum chloride react with the separated ions in the filtrate, and after a chemical reaction occurs with each other, the color of the filtrate is changed.

All kinds of printing and dyeing wastewater not only contain obvious chromaticity, but also the toxicity contained in these dyes is harmful to the human body. It was found that the chroma in printing and dyeing wastewater can be removed when poly aluminum chloride is used as a decolorizing agent.