A microwave rapid treatment method for dye wastewater

A technology of dye wastewater and treatment method, which is applied in the field of dye wastewater treatment, can solve the problems of long treatment cycle and low treatment efficiency, and achieve the effects of improved degradation efficiency, high degradation efficiency, and improved efficiency and rate

Active Publication Date: 2016-01-20
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a microwave rapid treatment method for dye wastewater in view of the shortcomings of the existing dye wastewater treatment technology, such as low treatment efficiency and long treatment cycle.

Method used

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  • A microwave rapid treatment method for dye wastewater
  • A microwave rapid treatment method for dye wastewater
  • A microwave rapid treatment method for dye wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, the treatment of wastewater containing solvent blue 36 dyes

[0026] Adjust the pH of the solvent blue 36 dye wastewater to 5.0, add nano-zero-valent iron, and pass the solid-liquid mixed solution of the dye wastewater and nano-zero-valent iron through the microwave field under aerobic or anaerobic conditions; Under aerobic or anaerobic conditions, the solid-liquid mixed solution of dye wastewater and nano-zero-valent iron stays for a period of time and then is filtered through a microporous membrane to obtain a decolorized aqueous solution.

[0027] (1) Influence of microwave field power

[0028] Microwaves with different powers (MP=0W, 450W, 720W, 900W) and different concentrations of nano-zero-valent iron (concentration of nano-zero-valent iron in the dye solution) (C Fe =0.1g / L, 0.2g / L) at the same time, the degradation curve of 50mg / L solvent blue solution with time is shown in Figure 1.

[0029] It can be seen from Figure 1 that after the microwave...

Embodiment 2

[0035] Embodiment 2, the treatment method of the dye wastewater containing reactive yellow K-RN

[0036] Adjust the pH of reactive yellow K-RN dye wastewater to 5.0, add nanometer zero-valent iron, and pass the solid-liquid mixed solution of dye wastewater and nanometer zerovalent iron through the microwave field under aerobic or anaerobic conditions; in the microwave field , under aerobic or anaerobic conditions, the solid-liquid mixed solution of dye wastewater and nano-zero-valent iron stays for a period of time and then is filtered through a microporous membrane to obtain a decolorized aqueous solution.

[0037] (1) Influence of microwave field power

[0038] Microwaves with different powers (WW=0W, 450W, 720W, 900W) and different concentrations of nano-zero-valent iron (C Fe =0.1g / L, 0.3g / L) at the same time, the degradation curve of 60mg / L solvent blue solution with time is shown in Figure 2.

[0039] It can be seen from Figure 2 that after the microwave field is added...

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Abstract

The invention relates to a rapid microwave treatment method of dye wastewater. The rapid microwave treatment method comprises the steps of adjusting the pH value of dye wastewater to be 5.0+ / -1, adding nano zero-valent iron according to the mass ratio of 1:(1-4) of dyes in the dye wastewater to nano zero-valent iron, and treating the solid-liquid mixed solution of the dye wastewater and nano zero-valent iron with a microwave field; filtering the solid-liquid mixed solution of the dye wastewater and nano zero-valent iron with a microporous filter membrane after the solid-liquid mixed solution stays in the microwave field for a period of time under the aerobic or anaerobic condition, thus obtaining a decolored water solution. Efficient and rapid decoloration of the dye wastewater is achieved by combining microwaves with nano zero-valent iron and simultaneously utilizing the thermal effects and non-thermal effects of microwaves, the dye degrading efficiency and rate of nano zero-valent iron are greatly increased by introducing the microwave field, and more than 90% of the decoloration efficiency can be obtained within 5 minutes.

Description

technical field [0001] The invention relates to a treatment method for dye wastewater, in particular to a method for efficiently and rapidly decolorizing dye wastewater by using microwaves and nanometer zero-valent iron, and belongs to the technical field of dye wastewater treatment. Background technique [0002] The textile, printing and dyeing industry is one of the leading industries in my country. Although thousands of textile, printing and dyeing industries have absorbed a large amount of labor, at the same time, the dye wastewater discharged by them has caused a serious threat to the environment and water safety, especially in the textile industry along the South-to-North Water Diversion Route. , Printing and dyeing enterprises need to meet strict sewage discharge standards, otherwise they will face the fate of stopping production. In addition, the dye components tend to be more and more anti-oxidation, anti-photolysis, anti-biodegradation, and their COD concentration a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30C02F103/30
Inventor 毛岩鹏王文龙宋占龙赵希强马春元
Owner SHANDONG UNIV
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