Water soluble binary anionic polymeric molecular brush dye capturing settling agent and preparation method and application thereof

Abstract

The invention relates to a water soluble binary anionic polymeric molecular brush dye capturing settling agent and a preparation method and an application thereof. The water soluble binary anionic polymeric molecular brush dye capturing settling agent is characterized by being prepared from a polymeric main chain polyethoxy acrylamide, carboxyl-containing tert-butyl polymethacrylate at the tail end of an anionic high molecular side chain precursor polymer, carboxyl-containing N-vinyl formamide at the tail end of a functional high molecular side chain precursor polymer, a dimethylformamide solvent and catalysts: N-hydroxy succinimide (NHS), 1-ethyl-3-(3-dimethylamino propyl) carbodiimide iodomethane, potassium hydroxide and carbon disulfide. The water soluble binary anionic polymeric molecular brush dye capturing settling agent is used for treating dye waste water and art dye wastewater discharged in a dye synthesizing or dyeing and finishing process. The water soluble binary anionic polymeric molecular brush dye capturing settling agent is high in capturing ability and high in settling speed, can treat heavy metal ions, can capture cationic dye molecules and heavy metal ions withinseveral seconds, and quickly generates grown settling particles, so as to achieve the aim of quickly separating the dye. The water soluble binary anionic polymeric molecular brush dye capturing settling agent has the advantages of being simple to operate, low in treatment cost, high in adaptability and 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 two-water-soluble two-component anionic polymer molecular brush dye capturing and settling agent and its preparation method and application. It is mainly used in dye synthesis or dyeing and finishing processes. Used in the discharged dye wastewater and artistic coating wastewater. Background technique [0002] In recent years, my country’s annual sewage discharge has reached more than 39 billion tons, of which industrial sewage accounted for 51%, and dye wastewater accounted for 35% of the total industrial wastewater discharge, and it is also increasing at a rate of 1% year by year. Dye wastewater mainly comes from dye synthesis and dye use enterprises, and consists of dyes and auxiliaries discharged during synthesis or dyeing and finishing. With the rapid development of the printing and dyeing industry, my country is a major cou...

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 handle heavy metal ions.