Method and device for treating wastewater containing high-concentration phenol

Abstract

The invention discloses a method and device for treating wastewater containing high-concentration phenol. A dielectric barrier discharge plasma treatment method combined with biological treatment is adopted. After the wastewater containing high-concentration phenol is collected, the wastewater is treated with a dielectric barrier discharge plasma reactor, the treated wastewater enters a biological treatment device to be treated, and finally the obtained water is discharged into a river. In the dielectric barrier discharge plasma reactor, .OH, .O, H2O2, O3, high-energy electrons and ultraviolet light, which are generated during high voltage discharge, have strong oxidizing substances, so that the concentration of phenol in wastewater is reduced; meanwhile, phenol is partly oxidized to generate low-carbon aldehyde, alcohol, acid and ester compounds which are easy for biodegradation. Entering the biological treatment device, the aldehyde, alcohol, acid and ester compounds and the phenol which is not treated are further converted into CO2, H2O and other inorganic substances under the microbial action. The method can effectively remove the high-concentration phenol in wastewater, and the removal rate is higher than 99 percent.

Description

technical field [0001] The invention relates to a treatment method and device for high-concentration phenol wastewater, in particular to a method and device for treating high-concentration phenol wastewater in combination with dielectric barrier discharge plasma and biology, and belongs to the technical field of environmental pollution treatment. Background technique [0002] With the development of industry, a large amount of industrial wastewater is produced and discharged, which has brought enormous pressure to environmental protection. Phenol wastewater, which widely exists in coking, petrochemical, pharmaceutical, paper, resin, plastic and other chemical industries, seriously endangers ecology and human health. [0003] At present, the main treatment methods include physical and chemical methods, chemical methods, and biochemical methods. The adsorption method in the physical and chemical method is widely used in the treatment of phenol-containing wastewater. It mainly...

AI Technical Summary

Problems solved by technology

The disadvantage is that the adsorption capacity is limited and needs to be regenerated

The disadvantage is that high concentration of phenol has a toxic effect on microorganisms, will inhibit the growth of microorganisms, and even lead to the death of microorganisms

However, the solution after plasma treatment still cannot be discharged directly due to containing a large amount of organic matter.

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