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

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...

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.

Images