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Method for degrading pigment wastewater by utilizing iron-based amorphous alloy activated persulfate

An iron-based amorphous alloy, a technology for activating persulfate, applied in chemical instruments and methods, iron compounds, oxidized water/sewage treatment, etc., can solve the effect of oxidative degradation of dye wastewater, low sulfate radical efficiency, Nano-iron tetroxide is easy to agglomerate and other problems, to achieve the effect of reducing water treatment costs, strong forming ability, and simplifying process flow

Inactive Publication Date: 2016-01-06
SHENYANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the efficiency of using ferrous ions to activate persulfate to generate sulfate radicals is not high, which affects the oxidative degradation effect on dye wastewater; although the degradation efficiency of nano-ferrous ferric oxide-activated persulfate is improved, the nano-tri-iron tetroxide Iron is easy to agglomerate, and it is difficult to guarantee its nanoparticle characteristics after recycling, so it is not conducive to repeated use, and it is easy to cause secondary pollution and other disadvantages

Method used

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  • Method for degrading pigment wastewater by utilizing iron-based amorphous alloy activated persulfate
  • Method for degrading pigment wastewater by utilizing iron-based amorphous alloy activated persulfate
  • Method for degrading pigment wastewater by utilizing iron-based amorphous alloy activated persulfate

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Embodiment 1

[0023] 1. Preparation of Fe-based amorphous alloy powder dispersion: Prepare Fe by mechanical alloying technology 78 Si 9 B 13 Amorphous alloy powder, all equipment is a star ball mill. (1) The elemental raw materials used in the test are powders of Fe, Si and B, the particle size is 200 mesh, and the purity is not less than 99.99% (mass percentage). Stainless steel was selected as the ball milling medium. Three kinds of stainless steel balls were used in the test, namely 800 stainless steel balls with a radius of 2 mm, 500 stainless steel balls with a radius of 6 mm, and 10 stainless steel balls with a radius of 8 mm. (2) Put the accurately weighed Fe, Si and B powders into the ball mill pot, then put the above stainless steel balls into the ball mill pot, and seal the ball mill pot. Then use a vacuum pump to evacuate and fill it with high-purity argon as a protective gas. Repeat the above steps for 6 times to ensure the purity of the argon in the final ball mill filling. ...

Embodiment 2

[0027] 1. Preparation of Fe-based amorphous alloy powder dispersion: Prepare Fe by mechanical alloying technology 78 Si 9 B 13Amorphous alloy powder, all equipment is a star ball mill. (1) The elemental raw materials used in the test are powders of Fe, Si and B, the particle size is 200 mesh, and the purity is not less than 99.99% (mass percentage). Stainless steel was selected as the ball milling medium. Three kinds of stainless steel balls were used in the test, namely 800 stainless steel balls with a radius of 2 mm, 500 stainless steel balls with a radius of 6 mm, and 10 stainless steel balls with a radius of 8 mm. (2) Put the accurately weighed Fe, Si and B powders into the ball mill pot, then put the above stainless steel balls into the ball mill pot, and seal the ball mill pot. Then use a vacuum pump to evacuate and fill it with high-purity argon as a protective gas. Repeat the above steps for 6 times to ensure the purity of the argon in the final ball mill filling. F...

Embodiment 3

[0031] 1. Preparation of Fe-based amorphous alloy powder dispersion: Prepare Fe by mechanical alloying technology 78 Si 9 B 13 Amorphous alloy powder, all equipment is a star ball mill. (1) The elemental raw materials used in the test are powders of Fe, Si and B, the particle size is 200 mesh, and the purity is not less than 99.99% (mass percentage). Stainless steel was selected as the ball milling medium. Three kinds of stainless steel balls were used in the test, namely 800 stainless steel balls with a radius of 2 mm, 500 stainless steel balls with a radius of 6 mm, and 10 stainless steel balls with a radius of 8 mm. (2) Put the accurately weighed Fe, Si and B powders into the ball mill pot, then put the above stainless steel balls into the ball mill pot, and seal the ball mill pot. Then use a vacuum pump to evacuate and fill it with high-purity argon as a protective gas. Repeat the above steps for 6 times to ensure the purity of the argon in the final ball mill filling. ...

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Abstract

The invention provides a method for degrading pigment wastewater by utilizing iron-based amorphous alloy activated persulfate, and relates to a method for treating wastewater. The method comprises the following steps: firstly, preparing a Fe78Si9B13 amorphous alloy powder suspension, selecting iron-based amorphous alloy as Fe78Si9B13 amorphous powder which is prepared from the ingredients in atomic percentage: 78 percent of Fe, 9 percent of Si and 13 percent of B; then, mixing the Fe78Si9B13 amorphous alloy powder suspension with a sodium persulfate solution to form a mixed solution; and finally adding the mixed solution into dyeing wastewater, and performing oxidative degradation on the dyeing wastewater by utilizing sulfate radicals generated by activation of the mixed solution. The method is simple in process and convenient to operate, and the catalyst iron-based amorphous alloy is easy to prepare and is easy to recycle and reuse.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a method for activating peroxodisulfate to degrade dye wastewater by using an iron-based amorphous alloy. Background technique [0002] With the rapid development of industrialization, water consumption has increased sharply, and the discharge of industrial wastewater has also increased rapidly. Among them, dye wastewater accounts for about one tenth of the total discharge of industrial wastewater, and has become an important source of pollution in the water environment. This type of wastewater has the characteristics of complex structure, refractory biodegradation and harm to human health, and is recognized as refractory. Organic waste water. [0003] At present, the dye wastewater treatment methods mainly include physical adsorption method, advanced oxidation method, chemical oxidation method, biodegradation method and chemical flocculation method, etc., but these methods of de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C01G49/00
CPCY02P20/584
Inventor 马国峰张鸿龄刘岩贺春林
Owner SHENYANG UNIV
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