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

A new material, technology of phenolic wastewater, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem that microbial biological activity has a great influence and is difficult to degrade phenolic organic compounds and chemical agents. The problem of high cost, to achieve the effect of abundant amino sites, strong pH and pressure, and strong hydrophilicity

Inactive Publication Date: 2019-08-23
南京赢点色谱分离技术有限公司 +1
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  • Abstract
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  • Application Information

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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

Method used

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

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Embodiment 1

[0030] According to attached figure 1 In the method shown, polyethyleneimine is bonded on the surface of silica gel particles as a spacer, and 6-amino-2-naphthoic acid is a new material as a monomer. The specific preparation steps are:

[0031] (1) Pretreatment of silica gel particles

[0032] Take 20 g of silica gel particles (particle size 10 μm, pore size 300 angstroms), disperse them in 400 mL of 0.1 mol / L NaOH solution, ultrasonicate for 30 min, add dilute hydrochloric acid to adjust the pH to 7.0, separate by suction filtration and rinse with deionized water until the flow-through The solution is neutral, then rinsed three times with methanol or acetonitrile, and dried in vacuum at 60°C for later use.

[0033] (2) Silanization treatment of silica gel particles

[0034] Disperse the activated silicon spheres in step (1) in 400mL of methanol solution, add 24g of 3-aminopropyltriethoxysilane, mix with ultrasonic waves, heat and react at 50°C for 18h to obtain amino-modifi...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/42C02F101/34
CPCB01J20/103B01J20/22B01J20/26C02F1/288C02F1/42C02F2001/425C02F2101/345
Inventor 张维冰李宙显赵雅梦张麟
Owner 南京赢点色谱分离技术有限公司
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