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Aluminum alloy strip and application of strip to dyeing wastewater treatment

A technology for printing and dyeing sewage and aluminum alloys, which is applied in special compound water treatment, light water/sewage treatment, water/sludge/sewage treatment, etc. It can solve problems such as cost increase, promotion and application restrictions, and amorphous alloy restrictions. Good degradation performance, broad application prospects, and the effect of increasing degradation speed

Active Publication Date: 2018-05-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon adsorption is a traditional treatment method, but it is limited to physical adsorption and cannot destroy the molecular structure of azo dyes, and its follow-up treatment is still very complicated
The biodegradation method is often limited by the environmental conditions of degradation, which requires considerable equipment support, which increases the cost and limits its scope of application.
Due to the high price of photocatalysis, its popularization and application are limited.
[0004] Amorphous alloy materials can be used to degrade azo dyes, and compared to iron powder, the degradation rate of amorphous alloys can be increased by 1000 times (S.Xie, P.Huang, J.J.Kruzic, X.Zeng and H.Qian, Scientific reports , 2016, 6, 1~10), however, due to the unstable structure of amorphous alloys and the limited composition of amorphous alloys in order to achieve a certain amorphous formation ability, the ability of amorphous alloys to degrade azo sewage is greatly limited. limit

Method used

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  • Aluminum alloy strip and application of strip to dyeing wastewater treatment
  • Aluminum alloy strip and application of strip to dyeing wastewater treatment
  • Aluminum alloy strip and application of strip to dyeing wastewater treatment

Examples

Experimental program
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Effect test

Embodiment 1

[0031] This embodiment Al 84 Fe 14 Y 2 Preparation of aluminum alloy strips:

[0032] (1) Select commercially available high-purity Al blocks, Fe blocks, and Y blocks as raw materials, first remove the surface oxide skin of the pure metal blocks and put them in absolute ethanol to prevent oxidation, and the content is 84% ​​and 14% according to the atomic ratio , and 2% for matching.

[0033] (2) Under the condition of using titanium sponge as an oxygen absorber and high-purity argon as a protective gas, place the raw materials prepared in step (1) in a water-cooled copper crucible in a vacuum melting furnace for repeated melting for 5 times to ensure that the mother The uniformity of the material is obtained to obtain the aluminum alloy master ingot.

[0034] (3) After polishing the surface scale of the aluminum alloy master ingot obtained in step (2), put it into a quartz test tube with a bottom opening diameter of 1 mm in a single-roller stripping machine (WK-II), and u...

Embodiment 2

[0040] This embodiment Al 82 Fe 16 Y 2 Preparation of aluminum alloy strips:

[0041] (1) Select commercially available high-purity Al blocks, Fe blocks, and Y blocks as raw materials, first remove the surface oxide skin of the pure metal blocks and put them in absolute ethanol to prevent oxidation, and the content is 82% and 16% according to the atomic ratio , and 2% for matching.

[0042] (2) Under the condition of using titanium sponge as an oxygen absorber and high-purity argon as a protective gas, place the raw materials prepared in step (1) in a water-cooled copper crucible in a vacuum melting furnace for repeated melting for 5 times to ensure that the mother The uniformity of the material is obtained to obtain the aluminum alloy master ingot.

[0043](3) After polishing the surface scale of the aluminum alloy master ingot obtained in step (2), put it into a quartz test tube with a bottom opening diameter of 1 mm in a single-roller stripping machine (WK-II), and use ...

Embodiment 3

[0049] This embodiment Al 80 Fe 18 Y 2 Preparation of aluminum alloy strips:

[0050] (1) Select commercially available high-purity Al blocks, Fe blocks, and Y blocks as raw materials, first remove the surface oxide skin of the pure metal blocks and put them in absolute ethanol to prevent oxidation, and the content is 80% and 18% according to the atomic ratio , and 2% for matching.

[0051] (2) Under the condition of using titanium sponge as an oxygen absorber and high-purity argon as a protective gas, place the raw materials prepared in step (1) in a water-cooled copper crucible in a vacuum melting furnace for repeated melting for 5 times to ensure that the mother The uniformity of the material is obtained to obtain the aluminum alloy master ingot.

[0052] (3) After polishing the surface scale of the aluminum alloy master ingot obtained in step (2), put it into a quartz test tube with a bottom opening diameter of 1 mm in a single-roller stripping machine (WK-II), and use...

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Abstract

The invention belongs to the field of wastewater treatment materials and discloses an aluminum alloy strip and application of the aluminum alloy strip to dyeing wastewater treatment. A preparation method of the aluminum alloy strip comprises the steps of compounding materials comprising, by element percentage, 80-84% of Al, 14-18% of Fe and 2% of Y, and conducting surface pre-treatment on metal-block raw materials of the Al, the Fe and the Y; melting the pretreated raw materials to be uniform in a vacuum melting furnace under the conditions that a titanium sponge serves as oxygen absorbent andhigh-purity argon gas serves as protective gas, so that an aluminum alloy mother ingot is obtained; and then, conducting surface pretreatment on the obtained aluminum alloy mother ingot, so that thealuminum alloy strip is obtained through a melt-spinning method. An aluminum alloy obtained through melt-spinning is of a nanocrystalline or ultra-fine crystalline structure; compared with an amorphous alloy, the wider element scope is achieved; and the aluminum alloy strip has the beneficial effects of being good in degrading effect and low in cost.

Description

technical field [0001] The invention belongs to the field of sewage treatment materials, in particular to an aluminum alloy strip and its application in printing and dyeing sewage treatment. Background technique [0002] Since organic dyes were first synthesized by Perkin in 1875, until the end of last century, the annual output of organic dyes was close to 100 tons, more than half of which were azo dyes. Azo dyes are a class of organic compounds in which the two ends of the azo group are connected to aryl groups. They are the most widely used synthetic dyes in the printing and dyeing process of textiles and clothing. They are used for dyeing and printing of various natural and synthetic fibers. Coloring of paint, plastic, rubber, etc. According to the survey, about 12% of the dyes flow into the wastewater every year. If the wastewater is not properly treated, the wastewater will flow into rivers, lakes or groundwater, which will cause great damage to the ecological environ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02B22D11/06C02F1/30C02F101/30
CPCB22D11/003B22D11/06C02F1/30C02F2101/308C02F2305/10C22C1/026C22C21/00
Inventor 肖志瑜彭思远倪东惠吉丽温利平
Owner SOUTH CHINA UNIV OF TECH