Manganese oxide coated activated carbon catalyst and preparation method and application thereof

Abstract

The invention belongs to the technical field of ozone catalysts, and discloses a manganese oxide coated activated carbon catalyst and a preparation method and application thereof. The method comprises the following steps: (1) uniformly mixing some activated carbon powder, an adhesive and a pore-forming agent; preparing a raw material core through a sugar-coating preparation machine; roasting the raw material core under the inert gas protection; and cooling to obtain an activated carbon carrier core; (2) uniformly mixing potassium permanganate solid particles, a manganese sulfate aqueous solution and the rest activated carbon powder; then transferring into the activated carbon carrier core; and preparing activated carbon particles through the sugar-coating preparation machine; and (3) sintering the activated carbon particles under nitrogen or carbon dioxide atmosphere to obtain the manganese oxide coated activated carbon ozone catalyst. According to the catalyst, the catalyzing active components are high in coating rate and uniform to disperse; the ozone oxidation performance and the reaction efficiency can be increased; organic matters which are hardly degraded in wastewater can be efficiently removed; meanwhile, the method is simple and applicable to ozone oxidation sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of ozone catalysts, and relates to an agricultural waste straw activated carbon catalyst containing manganese dioxide active components and a preparation method thereof. The catalyst is applied in the technical field of ozone oxidation water treatment. Background technique [0002] China is the "world factory", many products are exported overseas, and the manufacturing industry is huge and developing rapidly. With the development of urbanization and industrialization, the problem of refractory biodegradable wastewater such as industrial sewage and municipal landfill leachate has received widespread attention. Ozone has a strong oxidizing ability. In 1783, M. Van Mullen discovered ozone; in 1886, M. Meritan of France discovered that ozone has the ability to sterilize; in 1891, Siemens and Halsk in Germany used the principle of discharge to make an ozone generator. In 1908, a test device for disinfecting tap ...

AI Technical Summary

Problems solved by technology

But its disadvantage is that the catalyst is miscible in water, which makes it easy to lose, difficult to recycle and cause secondary pollution. The operating cost is high and the cost of water treatment is increased.