Device and method for treating cationic dyes in sewage by using magnetic compound

A technology of cationic dyes and complexes, which is applied in the field of sewage treatment, can solve problems such as difficult separation and recovery, and achieve the effects of solving the difficulty of separation and recovery, improving treatment efficiency, and improving use efficiency

Pending Publication Date: 2020-09-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the existing cationic dye treatment technology in sewage, the first object of the present invention is to provide a method for treating cationic dye in sewage by using a magnetic compound, which not only avoids the difficult separation and recovery of the catalyst by using the magnetic compound problems, and can realize the adsorption-degradation-detection trinity of continuous wastewater treatment of cationic dye pollutants, first adsorption, enrichment, concentration and then degradation, improve the degradation efficiency of pollutants, and degrade pollutants into harmless small molecules so that Avoid re-pollution of pollutants, and use surface-enhanced Raman spectroscopy technology to monitor the degradation process of pollutants in real time, and grasp the content and treatment information of pollutants in a timely and effective manner

Method used

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  • Device and method for treating cationic dyes in sewage by using magnetic compound
  • Device and method for treating cationic dyes in sewage by using magnetic compound
  • Device and method for treating cationic dyes in sewage by using magnetic compound

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Synthesis of magnetic complexes:

[0055] Prepare 0.15g / ml sodium acetate ethylene glycol dispersion, mix the sodium acetate ethylene glycol dispersion with 0.06g / ml ferric chloride ethylene glycol solution in a medium proportion, stir for 30 minutes, and place the mixture at 200°C React for 10 hours, magnetically separate the product, wash with water for 3 times, and dry the product at 50°C for 5 hours to obtain ferric oxide nanoparticles; configure 1% 3-aminopropyltriethoxysilane ethanol solution, take the Add triethoxysilane ethanol solution to 0.15 mg / mL ferric ferric oxide ethanol dispersion, stir for 24 hours, magnetically separate the product, wash with ethanol and water for 3 times, redisperse it in aqueous solution to obtain aminated ferric ferric oxide Aqueous solution: configure 100mL 0.01% chloroauric acid aqueous solution, take 1ml 1% sodium citrate aqueous solution and add it to the above chloroauric acid aqueous solution and stir for 1 minute, then take 1...

Embodiment 2

[0066] Synthesis of magnetic complexes:

[0067] Prepare 0.15g / ml sodium acetate ethylene glycol dispersion, mix the sodium acetate ethylene glycol dispersion with 0.06g / ml ferric chloride ethylene glycol solution in a medium proportion, stir for 30 minutes, and place the mixture at 200°C React for 10 hours, magnetically separate the product, wash with water for 3 times, and dry the product at 50°C for 5 hours to obtain ferric oxide nanoparticles; configure 1% 3-aminopropyltriethoxysilane ethanol solution, take the Add triethoxysilane ethanol solution to 0.15 mg / mL ferric ferric oxide ethanol dispersion, stir for 24 hours, magnetically separate the product, wash with ethanol and water for 3 times, redisperse it in aqueous solution to obtain aminated ferric ferric oxide Aqueous solution: configure 100mL 0.01% chloroauric acid aqueous solution, take 1ml 1% sodium citrate aqueous solution and add it to the above chloroauric acid aqueous solution and stir for 1 minute, then take 1...

Embodiment 3

[0078] Synthesis of magnetic complexes:

[0079] Prepare 0.15g / ml sodium acetate ethylene glycol dispersion, mix the sodium acetate ethylene glycol dispersion with 0.06g / ml ferric chloride ethylene glycol solution in a medium proportion, stir for 30 minutes, and place the mixture at 200°C React for 10 hours, magnetically separate the product, wash with water for 3 times, and dry the product at 50°C for 5 hours to obtain ferric oxide nanoparticles; configure 1% 3-aminopropyltriethoxysilane ethanol solution, take the Add triethoxysilane ethanol solution to 0.15 mg / mL ferric ferric oxide ethanol dispersion, stir for 24 hours, magnetically separate the product, wash with ethanol and water for 3 times, redisperse it in aqueous solution to obtain aminated ferric ferric oxide Aqueous solution: configure 100mL 0.01% chloroauric acid aqueous solution, take 1ml 1% sodium citrate aqueous solution and add it to the above chloroauric acid aqueous solution and stir for 1 minute, then take 1...

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Abstract

The invention discloses a device and a method for treating cationic dyes in sewage by using a magnetic compound. The device comprises a sewage storage mechanism, an adsorption generation mechanism, aregenerated sewage storage mechanism, a magnetic compound storage mechanism, a degradation generation mechanism and a hydrogen peroxide storage mechanism, wherein a magnetic compound is stored in themagnetic compound storage mechanism. The method comprises the following steps: adsorbing cationic dyes in sewage containing cationic dyes by adopting a magnetic compound, and carrying out catalytic degradation treatment on the cationic dyes adsorbed by the magnetic compound by adopting a hydrogen peroxide oxidation mode. According to the invention, physical adsorption and chemical oxidation are combined, and a magnetic composite material with double functions of adsorption and degradation is adopted, so that the advantages can be achieved, the disadvantages can be made up, the degradation efficiency can be improved, mixed pollution of different materials can be avoided, and the use efficiency of the materials can be improved; and by introducing Raman spectrum, the degradation process can be monitored in real time, and adsorption-degradation-monitoring three-in-one treatment of the cationic dye in the sewage is achieved.

Description

technical field [0001] The invention particularly relates to a device and method for treating cationic dyes in sewage by using a magnetic compound, belonging to the technical field of sewage treatment. Background technique [0002] The development of industry marks the progress of the country, and the industry brings not only economic benefits, but also a large amount of industrial sewage. my country is a large textile manufacturing country, and more than 1.1 billion tons of dye wastewater are discharged every year, but cationic Dyes are difficult to process due to their complex structural properties and anti-oxidation and high stability. Cationic dyes have carcinogenic, teratogenic and mutagenic effects on organisms. At the same time, due to their high colorability in aqueous solution, even low concentrations of colored cationic dyes will reduce the light transmittance of water and inhibit the respiration and microbial activity of aquatic organisms. Once a large amount of s...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F101/30
CPCC02F1/288C02F2101/308C02F2303/16
Inventor 宋薇马骁玮温思思刘皓李林甲金静赵冰
Owner JILIN UNIV
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