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A method of using iron-based amorphous alloy to activate persulfate to degrade pigment wastewater

An iron-based amorphous alloy and activated persulfate technology, which is applied in chemical instruments and methods, iron compounds, oxidized water/sewage treatment, etc., can solve the effect of dye wastewater oxidative degradation, easy agglomeration of nano-ferric oxide, The efficiency of sulfate free radicals is not high, and the effect of reducing water treatment costs, simplifying the process, and strong formation ability is achieved.

Inactive Publication Date: 2017-10-20
SHENYANG UNIV
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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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  • A method of using iron-based amorphous alloy to activate persulfate to degrade pigment wastewater
  • A method of using iron-based amorphous alloy to activate persulfate to degrade pigment wastewater
  • A method of using iron-based amorphous alloy to activate persulfate to degrade pigment wastewater

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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 Fe, Si and B powders, 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. Fin...

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 Fe, Si and B powders, 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. Fina...

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 Fe, Si and B powders, 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. Fin...

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Abstract

A method for using iron-based amorphous alloy to activate persulfate to degrade pigment wastewater, relates to a method for treating wastewater, the method first prepares Fe78Si9B13 amorphous alloy powder dispersion liquid, and selects iron-based amorphous alloy as Fe78Si9B13 amorphous Alloy powder, its composition and atomic percentage are: 78%Fe, 9%Si, 13%B; then Fe78Si9B13 amorphous alloy powder dispersion and sodium persulfate solution are mixed to form a mixed solution, and finally the above-mentioned The mixed solution utilizes sulfate radical free radicals produced by activation in the mixed solution to oxidize and degrade the dye wastewater; the invention has simple process and convenient operation, and the catalyst iron-based amorphous alloy is relatively simple to prepare and 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 Patents(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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