Electrocatalysis wet-type peroxide oxidizing method for high-effect waste water processing and devices thereof

Abstract

The invention relates to an electrocatalysis wet-type peroxide oxidizing method for waste water processing and devices thereof. Devices used for the method comprise a high-pressure reaction kettle, a heater, a temperature controller, a magnetic stirrer, a pressure meter, a liquid-phase sampling valve, a gas-phase sampling valve, a replaceable anode electrode and a replaceable cathode electrode. The invention uses a nanometer platinum electrode as an electrocatalyst of wet-type catalysis oxidization to be applied in the organic pollutant of difficult biochemical degradation. Compared with the common catalysis wet-type peroxide method of a nanometer platinum catalyst, the invention accelerates the oxidizing reaction velocity and the mineralizing velocity of the organic pollutant, and reduces the oxidizing and activating energy of the primary reacting substance. Under the condition of same time and different temperatures, the removal rate of TOC in 2, 4-dichlorphenoxyacetic acid is increased by 80 to 93 percent. The anode of the device used by the method can be a replaceable anode, and flat plate electrodes in common use such as a boron-mixed diamond membrane electrode, a lead dioxide electrode, a tin dioxide electrode and the like can be applied in the method of waste water processing. The technology has simple operation, and has good processing effect on organic waste water, and wide application prospect and developing potential.

Description

technical field [0001] The invention belongs to the technical field of organic pollution wastewater treatment, and in particular relates to an electrocatalytic wet hydrogen peroxide oxidation method and a device for treating wastewater. Background technique [0002] With the continuous development of social industrialization, global environmental problems have become increasingly prominent, especially the discharge of a large amount of industrial and agricultural sewage and domestic wastewater has caused serious pollution of water bodies by organic matter; due to the variety of organic pollutants, complex material structure, toxic and harmful Therefore, in recent years, how to deal with refractory biodegradable organic pollutants in water bodies has become a key and difficult point in environmental protection research. [0003] Advanced oxidation technology is a popular research technology that is considered to have good development prospects, mainly including wet catalytic ...

AI Technical Summary

Problems solved by technology

One is the use of powdery or granular solid-phase catalysts, which are difficult to separate. For this reason, noble metal-supported catalysts or transition metal oxide-supported catalysts are sometimes used, but the subsequent treatment is more cumbersome; the other is in catalytic wet oxidation. During the process, the reaction process is often accompanied by the generation of organic acids, and the solid catalyst, especially the metal oxide, is easily corroded, resulting in the loss of the catalyst, which will cause secondary pollution

However, the problem of separation and loss of such high-efficiency catalysts has not been well solved at present.

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