Preparation method and using method of novel material for treating phenol-containing wastewater

Abstract

The invention relates to a preparation method and using method of a novel material for treating phenol-containing wastewater. The material is prepared by using polyethyleneimine as a spacer arm and 6-amino-2-naphthoic acid as a monomer on the basis of pi-pi interaction and ion exchange action, and the material can selectively adsorb phenolic compounds in the phenol-containing wastewater. Accordingto the preparation method provided by the invention, the material prepared by the method adopts the chain-like polyethyleneimine as the spacer arm, and the chain-like polyethyleneimine has strong hydrophilicity, a flexible structure and rich modifiable amino sites, and can load a large amount of the 6-amino-2-naphthoic acid; in addition, the polyethyleneimine and the 6-amino-2-naphthoic acid of the material have a synergistic adsorption effect on the phenolic compounds; selective separation of the different phenolic compounds in the phenol-containing wastewater can be realized by adjusting anaddition amount of the 6-amino-2-naphthic acid; and 6-amino-2-naphthoic acid-modified silica gel particles are easy to regenerate and can be recycled.

Description

technical field [0001] The invention relates to the technical field of new material preparation, in particular to a method for preparing and using a new material for treating phenol-containing wastewater. Background technique [0002] With the fine utilization and development of petrochemical and its downstream product resources, phenol and its derivatives, as important petroleum fine chemical raw materials and products, are used in petrochemical, plastics, pesticides, dyes, phenolic resins, epoxy resins and other chemical industries It has wide application in the field. Since phenol and its derivatives are difficult to degrade or decompose naturally, the environmental pollution of phenol-containing wastewater has always been a difficult and hot spot in the field of sewage treatment. According to the concentration of the pollutants contained, it is divided into low-concentration phenol-containing wastewater and high-concentration phenol-containing wastewater. Usually, waste...

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Problems solved by technology

The extraction method has a good effect on the treatment of high phenolic wastewater, but it needs multiple extractions and back extractions to complete the treatment. The process is very complicated and difficult to promote on a large scale; Decompose phenolic compounds in high-phenol-containing wastewater, and the cost of chemical agents is high, and it is easy to cause secondary pollution; while the biological method uses microorganisms to degrade phenol-containing wastewater, but phenol and its derivatives in high-phenol-containing wastewater are harmful to the environment. Microorganisms have toxic effects, and the biological activity of microorganisms is greatly affected, making it difficult for microorganisms to degrade phenolic organic compounds

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