Catalytic ozonation process for treatment of organic wastewater

Abstract

The invention provides a high-efficiency catalytic ozonation process which is particularly applicable to purification and treatment of water bodies with organic pollutants. Pretreated organic wastewater is mixed with ozone prior to entering a catalytic oxidation tower through a micronano bubble generation device, and the catalytic oxidation tower is filled with catalytic filler materials for catalyzed oxidative degradation of organics in wastewater. The catalytic filler materials in the catalytic oxidation tower are large in specific surface, ozone catalyzing capability can be enhanced by composite metals on the catalytic filler materials, and effective utilization rate of hydroxyl free radicals can be increased. Compared with traditional catalytic treatment processes and catalytic filler materials, the high-efficiency catalytic ozonation process has the advantage of high efficiency in elimination of toxic and harmful organics in the water bodies.

Description

technical field [0001] The invention relates to a treatment method for organic waste water, in particular to an ozone catalytic oxidation treatment process and catalyst material. Background technique [0002] The pollution of refractory organic matter in water and its effective treatment have become a severe problem faced by my country's water environment work. Organic pollutants in water mainly include macromolecular natural organic matter, trace organic pollutants, odorous substances, algae and their metabolites, etc. These organic substances usually come from organic pollutants produced by industrial processes such as organic chemical industry, petrochemical industry, medicine, pesticides and herbicides. They have the characteristics of low concentration and high toxicity, and many of them can produce carcinogenic, teratogenic and mutagenic effects. It is extremely harmful to human health, and these organic substances are difficult to degrade, and are easy to amplify the...

AI Technical Summary

Problems solved by technology

However, in the homogeneous catalytic oxidation, the catalyst is miscible in water, the catalyst is easy to lose and difficult to recycle, easy to produce secondary pollution, the operation and maintenance costs are high, and the processing cost is increased, so it is difficult to apply in large-scale production; while in the heterogeneous phase In catalytic oxidation, the solid catalyst has the disadvantages of uneven surface and slow internal diffusion speed, and the oxidation effect is easily affected by impurities in the water, which reduces the oxidation efficiency, and may also generate bromate as a by-product, resulting in secondary pollution of the water body , also have an impact on human health

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