Reactive dye wastewater treatment method and device

A reactive dye and wastewater treatment technology, which is applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of reduced electrocoagulation treatment efficiency and impact on wastewater treatment effect, and achieves Improve catalytic activity and durability, promote oxidation precipitation, and improve the effect of decolorization rate

Active Publication Date: 2019-02-15
江门市邑凯环保服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the prolongation of electrocoagulation wastewater treatment time, a dense passivation film will be formed on the surface of the electrode plate, which will reduce the efficiency of electrocoagulation treatment and affect the treatment effect of wastewater.

Method used

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  • Reactive dye wastewater treatment method and device
  • Reactive dye wastewater treatment method and device
  • Reactive dye wastewater treatment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 7

[0026] The actual dye wastewater used in Example 7 is taken from the wastewater receiving pond of a certain printing and dyeing enterprise in Jiangmen. It is a mixed wastewater of various dye wastewater, mainly reactive dyes, pH is 5-7, COD is 7558mg / L, and ammonia nitrogen is 67.2mg / L.

[0027] The following examples adopt the electrolyte as a concentration of 0.05-0.06M Na 2 SO 4 solution.

[0028] The following examples adopt self-made reactive dye wastewater treatment device, such as figure 1 As shown, it includes a power supply, electrodes, an electrolytic cell and an ultrasonic generator, and the electrodes include a first anode electrode, a cathode electrode and a second anode electrode, and the first anode electrode and the second anode electrode are both aluminum-titanium composite electrodes , the aluminum-titanium composite electrode is composed of a titanium electrode and an aluminum electrode coated with an electrochemical catalyst on the surface, the cathode ...

Embodiment 1

[0030] A kind of reactive dye wastewater treatment method, comprises the following steps:

[0031] (1) introducing reactive dye wastewater into the electrolyzer, adding electrolyte, and adjusting the pH of reactive dye wastewater to be 5.5;

[0032](2) Select an aluminum-titanium composite electrode composed of an aluminum electrode and a titanium electrode as the anode, and the surface of the titanium electrode is coated with an electrochemical catalyst, use an iron electrode as the cathode, and control the electrode voltage to 12V. Under ultrasonic conditions, the ultrasonic power The ultrasonic frequency is 600W, the ultrasonic frequency is 90kHz, the electrolytic treatment is 5h, and the treated water is discharged, wherein the electrochemical catalyst includes ruthenium oxide and biochar, and the mass ratio of ruthenium oxide and biochar is 0.1:1.

[0033] Among them, the aluminum electrode is soaked in acetone solution for 5 minutes before use, polished with sandpaper, a...

Embodiment 2

[0038] A kind of reactive dye wastewater treatment method, comprises the following steps:

[0039] (1) introducing reactive dye wastewater into the electrolyzer, adding electrolyte, and adjusting the pH of reactive dye wastewater to be 5.5;

[0040] (2) Select an aluminum-titanium composite electrode composed of an aluminum electrode and a titanium electrode as the anode, and the surface of the titanium electrode is coated with an electrochemical catalyst, use an iron electrode as the cathode, and control the electrode voltage to 12V. Under ultrasonic conditions, the ultrasonic power It is 600W, the ultrasonic frequency is 90kHz, the electrolysis treatment is 5h, and the treated water is discharged, wherein, the electrochemical catalyst includes ruthenium oxide and biochar, and the mass ratio of ruthenium oxide and biochar is 0.16:1.

[0041] Among them, the aluminum electrode is soaked in acetone solution for 5 minutes before use, polished with sandpaper, and placed in 0.5M s...

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Abstract

The invention discloses a reactive dye wastewater treatment method and a reactive dye wastewater treatment device. According to the reactive dye wastewater treatment method and the reactive dye wastewater treatment device, electrocoagulation and an ultrasonic technology are combined for use; an ultrasonic cleaning effect helps to weaken the passivation of the surface of an electrode and promote mass transfer so as to further improve the efficiency of electrocoagulation treatment and the decolourization ratio of a reactive dye; an aluminum-titanium composite anode is adopted, wherein a titaniumelectrode can share part current, has the effects of performing oxidative degradation primarily and separating oxygen out, and can weaken the current density of an aluminum anode and activate an aluminum electrode; on the other hand, the surface of the titanium electrode is coated with an electrochemical catalyst which contains ruthenium oxide and biomass charcoal; the catalytic activity and persistence of the titanium electrode are improved by regulating the proportion of the ruthenium oxide and the biomass charcoal, which helps to promote the oxidative separation on the surface of the titanium electrode and improve the treatment effect of the reactive dye.

Description

technical field [0001] The invention relates to the technical field of dye wastewater treatment, in particular to a method and device for treating reactive dye wastewater. Background technique [0002] Reactive dyes refer to water-soluble dyes containing active groups in the molecule, which have the advantages of bright color, complete chromatogram, low cost, simple dyeing process, high wash fastness and rubbing fastness of dyed products, and are currently widely used in the dye industry. application. However, the wastewater containing reactive dyes has complex components, poor biodegradability, high salinity, COD (chemical oxygen demand), ammonia nitrogen and high chroma, so the pollution is serious and the treatment is difficult. For a long time, scholars at home and abroad have carried out a lot of research on the treatment technology of printing and dyeing wastewater, especially the decolorization technology. Most of them use microorganisms to treat reactive dye wastewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F101/30
CPCC02F1/36C02F1/463C02F2101/308
Inventor 周武李镇江
Owner 江门市邑凯环保服务有限公司
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