Integrative method and device for treating wastewater with advanced oxidation

Abstract

The invention relates to an integrative method and device for treating wastewater with advanced oxidation. Treatment is performed in a reactor; the reactor is composed of an anode anaerobic microorganism reaction chamber and a cathode advanced oxidation reaction chamber; the anode anaerobic microorganism reaction chamber is internally provided with an anode electrode and is filled with a mixture of granular active carbon and anaerobic electricity generation bacteria; the cathode advanced oxidation reaction chamber is internally provided with multiple layers of cathode plates; the anode electrode is connected with the cathode plate at the uppermost layer through a wire; and a solid catalyst filler is filled between every two layers of the cathode plates at intervals. By adopting the integrative method and device provided by the invention, at normal temperature and normal pressure, strong oxidative radicals are produced under the catalytic action of a solid catalyst, electricity is generated by utilizing an integrative microbiological fuel cell, and repolarization electric field assistance is formed in the cathode advanced oxidation reaction chamber; the solid catalyst filler also acts as a particle electrode, the effects of repolarization electro-catalysis and catalytic wet oxidation are generated, and the removal rate of pollutants is improved; and by adopting a multi-stage cathode plate microporous aeration or hollow fiber membrane air supply manner, the oxidant utilization rate and the energy utilization rate are improved.

Description

technical field [0001] The invention relates to the technical field of organic wastewater treatment, in particular to an integrated method and device for advanced oxidation treatment of wastewater for treating high-concentration refractory organic wastewater. Background technique [0002] With the rapid development of my country's industrialization process, the generation and discharge of a large amount of wastewater has brought serious threats to people's daily life and health. These wastewaters have complex components, high chemical oxygen demand, poor biodegradability, and a large amount of wastewater discharge. It is difficult to meet the purification requirements and goals of this type of wastewater by using traditional biochemical, physical, and chemical methods. [0003] Advanced oxidation technology is a green and environmentally friendly technology that efficiently treats refractory organic wastewater and has good development prospects. It mainly includes catalytic ...

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Problems solved by technology

Bottom aeration is used to supply gas, the contact effect between the gas-phase oxidant and the solid-phase catalyst is not good, and the large bubbles are likely to cause the gas to be adsorbed on the surface of the catalyst, which hinders the contact between the wastewater and the solid-phase catalyst to a certain extent, and the catalytic oxidation efficiency At the same time, the aeration volume of the bottom aeration is generally large, which is easy to cause the disturbance of the catalyst particles and the water body, causing the catalyst particles to collide with each other, and the phenomenon that the effective catalytic components on the catalyst surface fall off and lose

The gas supply method of pressurized dissolved gas is to dissolve the gas in water under pressure before the waste water enters the reactor, and then pass the gas-liquid mixture through the reactor, and under the action of a solid-phase catalyst, the organic pollution in the water will be degraded by catalytic oxidation This kind of gas supply method requires the reactor to work under certain pressure conditions, and with the continuous consumption of the gas phase oxidant, the concentration of dissolved gas in the wastewater at different positions inside the reactor is different, and the catalytic oxidation reaction effect is unstable.

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