Water-soluble ternary chelating polymer molecular brush anionic dye capture agent and its preparation method and application

Abstract

The invention relates to a water-soluble binary chelic polymer molecular brush anionic dye catcher as well as a preparation method and application thereof. The water-soluble binary chelic polymer molecular brush anionic dye catcher is characterized by being prepared from polyhydroxyethyl acrylamide as a main chain of a polymer, carboxyl-containing poly(methacryloyloxyethyltrimethyl ammonium chloride) at the tail end of a cationic polymer side chain precursor polymer, carboxyl-containing poly(N-vinylformamide) at the tail end of a functional polymer side chain precursor polymer, water, a catalyst, namely N-hydroxysuccinimide, 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide methiodide, potassium hydroxide and ethylene glycol bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid and is applied totreatment of dye wastewater and artistic coating wastewater discharged in dye synthesis or dyeing and finishing processes. The water-soluble binary chelic polymer molecular brush anionic dye catcher has the advantages of high catching capacity, high sedimentation speed, simplicity and convenience in operation, low treatment cost, high adaptability and capability of treating complex heavy metal ions, catching anionic dye molecules and complex heavy metal ions within several seconds, realizing rapid growth to form large sedimented particles and achieving the aim of separating a dye.

Description

technical field

[0001] The invention belongs to the field of water treatment technology and polymer functional materials, in particular to a ternary chelating polymer molecular brush anionic dye capture agent and its preparation method and application, which is mainly discharged during dye synthesis or dyeing and finishing process The application in dye wastewater and art paint wastewater can realize the simultaneous removal of anionic dye molecules and complexed heavy metal ions in dye wastewater. Background technique

[0002] Traditional wastewater treatment methods include physical and chemical methods, chemical coagulation methods, physical adsorption methods, biochemical methods, and electrochemical methods. The chemical coagulation method is to add a coagulant to the dye wastewater to make the pollutants form colloidal particles, and remove the pollutants in the wastewater through coagulation precipitation or air flotation. The coagulation-sedimentation method is the ...