Multi-stage dielectric barrier discharge plasma-catalysis cooperative treatment device for waste gas and wastewater

Abstract

The invention discloses a multi-stage dielectric barrier discharge plasma-catalysis cooperative treatment device for waste gas and wastewater. The device comprises a shell, wherein plasma generators and catalysts or adsorbents supported by porous tower plates are sequentially and alternately arranged in the shell from a feeding end to a discharging end; each plasma generator comprises a high-voltage electrode which is perpendicular to a material flowing direction and coated with a discharging dielectric layer, and a plurality of barrier dielectric pipes, a low-voltage electrode is arranged ineach barrier dielectric pipe, the barrier dielectric pipes are uniformly distributed with the high-voltage electrode as a center, the high-voltage electrode is connected with a high-voltage dischargedevice at a left side, and the right sides of the low-voltage electrodes are grounded; and the catalysts or adsorbents supported by the porous tower plate can be loaded from a plurality of sealing doors with sealing rings on the shell. The device of the invention is simple in structure and reasonable in design, treats waste gas, purifies waste water and can reduce secondary pollutants.

Description

technical field [0001] The invention relates to a waste gas and wastewater treatment device, in particular to a multi-stage dielectric barrier discharge plasma cooperative catalytic treatment device for waste gas and wastewater treatment. Background technique [0002] With the development of science and technology, petrochemical and organic synthesis technology is constantly improving, so many chemical products are increasingly becoming the necessities of people's life. On the one hand, these products bring convenience to our life; on the other hand, some waste gas and waste water will be generated in the process of production and use, which will cause certain harm to the human body. For example, VOCs mainly affect the central nervous system and hematopoietic system of the human body, especially the immune system and various organs; benzene series are the most harmful to human health, with strong blood toxicity and carcinogenicity; The protagonist of pollution will cause da...

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Problems solved by technology

[0004] Most of the existing plasma treatment devices for waste gas and wastewater are single treatment, which does not meet the current situation of simultaneous generation of waste gas and waste water in the actual production process

"CN 208694648 U" discloses a low-temperature plasma exhaust gas treatment generator. Although this equipment is simple in process and easy to operate, it can be carried out under atmospheric pressure, but the life of the plasma product is too short to achieve sufficient purification of pollutants.

"CN 208553754 U" announced a device for the treatment of organic waste gas by plasma cooperative adsorption and catalysis, which can efficiently treat organic waste gas, but the device can only treat waste gas, and cannot treat waste water. In real life, waste gas and waste water are often Simultaneously

"CN104437021A" designed a plasma waste gas treatment device whose electrode module can be quickly disassembled. The electrode of this design is detachable and easy to clean, but the electrode is not fixed well, which is not conducive to the uniform discharge of the electrode.

"CN105858988A" discloses a method and device for plasma synergistic catalyst treatment of wastewater. The device passes wastewater into a reactor with positive and negative electrodes, and the processing capacity is small, which is not conducive to the large-scale treatment of wastewater.

"CN108261897A" designed a universal purification device for waste gas and waste water. The device directly sprays the gas-liquid mixture into the reaction chamber through the atomizing nozzle. Due to the influence of gravity, the waste water stays in the container for a short time and the purification is insufficient; When treating exhaust gas, if the ozone generated by the plasma is not completely consumed, it will cause secondary pollution to the gas

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