Device and method for treating high-salinity and degradation-resistant organic industrial waste water by performing photoelectrical synchro coupling and catalytic oxidation on three-dimensional particles

Abstract

The invention discloses a device and a method for treating high-salinity and degradation-resistant organic industrial waste water by performing photoelectrical synchro coupling and catalytic oxidation on three-dimensional particles. An anode rod compounded with a titanium-based coating, a stainless steel cathode rod and ultraviolet source condensers are arranged in a reaction device, compressed air is introduced, a nano semiconductor oxide surface coating ceramic medium serving as a carrier is in a suspension state, a hydroxyl radical is formed on an anode under the synchro coupling action of electrolytic oxidation desalination and photo-catalytic oxidation in the alkaline environment, Cl<-> in waste water is oxidized on the anode to generate Cl2, the Cl2 spreads into a solution for hydrolysis to generate ClO<->, and the ClO<-> can oxidize organic matters in the waste water and desalt the waste water; under the action of the ultraviolet source condensers, organic pollutants in the waste water are degraded; and by a side reaction, namely an oxygen evolution reaction during electrolysis, high-density dissolved oxygen is generated, and a hydroxyl radical .[OH] is generated by reacting the dissolved oxygen with nano semiconductor oxide photoinduced electrons, so that the activity of photo-catalytic oxidation reaction is enhanced, the mineralization and removal rates of degradation-resistant organic impurities in the waste water are increased, and the process is easy and convenient to operate.

Description

technical field [0001] The invention relates to a treatment process for high-salt refractory organic industrial wastewater, in particular to a photoelectric synchronous coupling catalytic oxidation device and method for treating high-salt refractory organic industrial wastewater, which belongs to the technical field of water treatment. Background technique [0002] At present, industrial wastewater containing high concentrations of soluble inorganic salts and high concentrations of refractory organic pollutants is widespread in various regions and industries in China, which will bring enormous pressure to the local living environment. [0003] High-concentration salt wastewater includes high-salt domestic wastewater and high-salt industrial wastewater. There are two main sources of it. One is that seawater is directly used in industrial production and domestic water, and its salt content is generally (2·50-3·50)×104mg·L -1 . The second is the high-salinity wastewater disch...

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the defects of the existing high-salt refractory organic industrial wastewater treatment efficiency and process performance, and provide a method for treating high-salt refractory organic industrial wastewater by electrolytic catalytic oxidation

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