High-frequency magnetic field auxiliary ball-milling preparation method of catalyst for sewage treatment

A high-frequency magnetic field and sewage treatment technology, applied in the field of powder metallurgy, can solve the problems of high efficiency, economy, environmental protection, low absorption and precipitation efficiency, and high cost of adsorbents, and achieve the effects of short preparation time, easy control, and low cost

Active Publication Date: 2018-03-13
GUIZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple, but there are disadvantages such as high cost of the adsorbent, further treatment is required after the adsorbent absorbs the pollutants, and the absorption and precipitation efficiency is low; Chemical action, so as to achieve the effect of degrading organic matter, but it is easy to cause secondary pollution at the same time
There is also a catalytic method, which uses catalysts to promote the decomposition of pollutants in water. Among them, the most widely studied and applied method is the use of nano-TiO2 to photocatalyze the decomposition of organic pollutants. It has high oxidation activity, strong deep oxidation ability, and stable activity. , good moisture resistance and strong sterilization and other excellent properties, however, mainly rely on ultraviolet light to activate the catalytic activity of TiO2, but ultraviolet light is harmful to the human body
At the same time, TiO2 nanomaterials are also facing the problem of difficult recycling, which can easily become another source of environmental water pollution
Although the above-mentioned methods have their advantages and application value, most of them have certain deficiencies and limitations, and it is difficult to achieve the unity of high efficiency, economy and environmental protection.

Method used

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  • High-frequency magnetic field auxiliary ball-milling preparation method of catalyst for sewage treatment
  • High-frequency magnetic field auxiliary ball-milling preparation method of catalyst for sewage treatment
  • High-frequency magnetic field auxiliary ball-milling preparation method of catalyst for sewage treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1. A method for preparing a catalyst for sewage treatment by high-frequency magnetic field-assisted ball milling, which is prepared according to the following steps:

[0044] a. Weigh 4 grams of copper oxide and 5.6 grams of iron powder, mix them evenly and add them to the ball mill jar, add 1 kilogram of grinding balls and 500ml of distilled water;

[0045] b. The stirring rod in the ball milling tank is stirred to drive the grinding balls in the ball milling tank to roll, and finally the mechanochemical action on the powder particles is realized through the impact and friction of the balls on the powder in the ball milling tank;

[0046] c. At the same time, apply a high-frequency magnetic field with a frequency of 20KHz around the ball mill jar to radiate the powder and solution inside the ball mill jar, start high-frequency magnetic field-assisted ball milling, and take out the solution in the ball mill jar after 14 hours of high-frequency assisted ball millin...

Embodiment 2

[0050] Example 2. A method for preparing a catalyst for sewage treatment by high-frequency magnetic field-assisted ball milling, which is prepared according to the following steps:

[0051] a. Weigh 4 grams of copper oxide, 5.6 grams of iron powder, and 0.6 grams of graphite powder, mix them evenly and add them to a ball mill jar, add 1 kilogram of grinding balls, and 500 ml of distilled water.

[0052] b. The stirring rod in the ball milling tank is stirred to drive the grinding balls in the ball milling tank to roll, and finally the mechanochemical action on the powder particles is realized through the impact and friction of the balls on the powder in the ball milling tank;

[0053] c. At the same time, apply a high-frequency magnetic field with a frequency of 20KHz around the ball mill jar to radiate the powder and solution inside the ball mill jar, start high-frequency magnetic field-assisted ball milling, and take out the solution in the ball mill jar after 15 hours of hi...

Embodiment 3

[0056] Example 3. A high-frequency magnetic field-assisted ball milling preparation method of a catalyst for sewage treatment, such as figure 1 Shown, according to the following steps to prepare:

[0057] a. Add the raw material powder into the ball milling jar, and add water into the ball milling jar to obtain product A, then grind the balls in the ball milling jar;

[0058] b. Agitate the grinding balls to crush product A, apply a high-frequency magnetic field to product A, perform high-frequency auxiliary ball milling, take out the mixed solution after 5 to 20 hours, and obtain product B; through the rolling of the balls, the raw material powder is ground , impact, tear, squeeze, stretch, thereby activating the raw material powder; apply a high-frequency magnetic field to realize the radiation of the powder and solution inside the ball mill tank;

[0059] c. Filtrate product B to obtain viscous solid, namely product C;

[0060] d. Add ethanol to product C and put it int...

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Abstract

The invention discloses a high-frequency magnetic field auxiliary ball-milling preparation method of a catalyst for sewage treatment. The catalyst is prepared according to the following steps: a, adding raw material powder into a ball-milling tank, adding water into the ball-milling tank to obtain a product A, and adding grinding balls into the ball-milling tank; b, stirring the grinding balls, ball-milling the product A, applying a high-frequency magnetic field to the product A, performing high-frequency auxiliary ball milling, and taking out the mixed solution after 5 to 20 hours to obtain aproduct B; c, filtering the product B to obtain viscous solid, namely a product C; d, adding the product c into ethanol and putting into ultrasonic wave to wash to obtain a product D; and e, drying the product D to obtain fine powder, namely the finished product. The high-frequency magnetic field auxiliary ball-milling preparation method of the catalyst for sewage treatment has the following characteristics: the preparation cost of the product is low, the preparation time of the product is short, the preparation efficiency of the product is high, the conversion rate of the raw materials is high, the preparation process is green and environment-friendly, and the prepared product has an excellent effect of catalyzing degradation of organic dye, is easy to recover and reuse and avoids secondary pollution when being applied to sewage treatment.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a high-frequency magnetic field-assisted ball milling preparation method of a catalyst for sewage treatment. Background technique [0002] With the rapid development of society and the continuous progress of industry, the increasingly serious water pollution problem has posed a major threat to human survival and safety, and has become a major obstacle to human health, economic and social sustainable development. Printing and dyeing wastewater is one of the main ways to cause environmental water pollution. Printing and dyeing wastewater is discharged from printing and dyeing factories that mainly process cotton, hemp, chemical fibers and their blended products. The printing and dyeing industry is a typical water-intensive industry, which consumes nearly 100 million tons of demineralized water for process every year. The pollutant composition of printing and dyeing waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/00B01J37/34
CPCB01J37/0036B01J37/342B01J37/343
Inventor 张英哲
Owner GUIZHOU INST OF TECH
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