Printing and dyeing wastewater is a kind of industrial wastewater with large amount of water, high chrominance, strong alkalinity and complex water quality. The primary task of treating this kind of wastewater is decolorization. Alkaline printing and dyeing wastewater decolorization agent solves the problems of poor degradation of printing and dyeing wastewater treatment process, difficult decolorization and insufficient aerobic biochemical unit reaction in actual operation, resulting in high subsequent physical and chemical treatment costs.
Conventional aluminum and iron coagulants have poor decolorization effect, especially for hydrophilic reactive dye wastewater, which is almost helpless. Alkaline printing and dyeing wastewater decolorizing agent is a cationic organic polymer compound that integrates various functions such as decolorization, flocculation, separation, etc. Its unique cationic groups interact with the anionic groups of colored substances in wastewater to become insoluble salt, with small dosage, high decolorization efficiency, and no color return. PH has a wide range of application, and has a significant effect on the decolorization of wastewater treatment in printing and dyeing, textile, ink and other industries. Coupled with the polymer adsorption bridging effect, it also has a certain coagulation sedimentation effect, which can form a multi-nuclear complex to make the particles colloids and particulate suspended substances in water polymerize together and grow up to form flocculants.
Alkaline printing and dyeing wastewater decolorizing agent is mainly used for the decolorizing treatment of printing and dyeing industry wastewater. After treatment, it produces flocculant density, easy to dissolve in water, less sludge, no suspended solids or sediment, will not block dosing equipment, has no corrosion effect on pipeline equipment, and has high removal rate of wastewater chroma, SS, COD and BOD. It can be directly added to the raw liquid for wastewater treatment without secondary pollution. The treated wastewater can meet the national discharge standards, and can provide the final water of the factory for reuse.
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