Water-soluble ternary chelating polymer molecular brush dye trapping agent as well as preparation method and application thereof

Abstract

The invention relates to a water-soluble ternary chelating polymer molecular brush dye trapping agent as well as a preparation method and an application thereof. The water-soluble ternary chelating polymer molecular brush dye trapping agent is characterized by being prepared from polymeric main chain PHEAA (polyhydroxyethyl acrylamide), cationic polymeric side chain PDMC-COOH (poly(methacryloyloxyethyl trimethyl ammonium chloride) containing carboxyl groups at the tail end), anionic polymeric side chain precursor PtBMA-COOH (poly(tert-butylmethacrylate) containing carboxyl at the tail end), functional polymer side chain precursor polymer PNVF-COOH (poly-N-vinylformamide containing carboxyl groups at the tail end), a DMF (dimethylformamide) solvent, a catalyst, namely, NHS (N-hydoxysuccinimide), EDC.CH3I (1-ethyl-3-(3-dimethylaminopropyl)carbodiimide methiodide), potassium hydroxide and EGTAD (ethylene glycol tetraacetic acid dianhydride), and the water-soluble ternary chelating polymer molecular brush dye trapping agent is used for treating dye wastewater and artistic coating wastewater drained in the dye synthesis or dyeing and finishing process. The water-soluble ternary chelating polymer molecular brush dye trapping agent the advantages of being high in trapping capability and settling speed, capable of treating complexing heavy metal ions, trapping dye molecules and complexing heavy metal ions in a few seconds and growing into large settling particles rapidly to achieve the purpose of rapid dye separation, simple to operate, low in treatment cost, high in adaptabilityand the like.

Description

technical field [0001] The invention belongs to the field of water treatment technology and polymer functional materials, and specifically relates to a ternary chelating polymer molecular brush dye catcher and its preparation method and application, which mainly discharges dyes during dye synthesis or dyeing and finishing processes The application in wastewater and art paint wastewater can simultaneously remove cationic dye molecules, anionic dyes and complexed heavy metal ions in dye wastewater. Background technique [0002] In recent years, my country's annual sewage discharge has reached more than 39 billion tons, of which industrial sewage accounts for 51%, while dye wastewater accounts for 35% of the total industrial wastewater discharge, and it is increasing at a rate of 1% year by year. Dye wastewater mainly comes from dye synthesis and dye use enterprises, and is composed of dyes and auxiliaries discharged during the synthesis or dyeing and finishing process. With t...

AI Technical Summary

Problems solved by technology

However, the chemical structure of polyacrylamide is relatively simple, and there are problems such as poor ability to capture dye molecules, slow sedimentation speed, and inability to deal with complexed heavy metal ions.