High-capacity photocatalytic wastewater degradation reactor with magnetron screening mechanism

Abstract

The invention relates to a high-capacity photocatalytic wastewater degradation reactor with a magnetron screening mechanism, belonging to the technical field of wastewater treatment. The problems that the microwave energy is wasted, the wastewater treatment capacity of a single tank is small, a catalyst particle interception link is weak, the degradation reaction terminal point moment is difficultly distinguished, a catalyst agglomeration substance cannot be dispersed by a strong force in situ, a catalyst agglomeration process cannot be timely detected, the magnetron is corroded due to reverse crossflow of secondary ozone, and the like are existent in existing related technologies. Aiming at the problems, the invention adopts the following technical scheme that a metal cage is utilized to restrict microwaves, so that the reactor is allowed to be expanded; catalyst particles are intercepted by using an external multistage cascade filter; the catalyst agglomeration substance is dispersed by using low-frequency ultrasonic waves, and a quartz tube is cleaned at the same time; a related power supply can be automatically and immediately turned off when a terminal point is reached; a main inducement parameter of the catalyst agglomeration process can be detected; a waveguide tube is separated by using a wave-transparent airtight separation plate to prevent the reverse crossflow of the ozone.

Description

technical field [0001] The invention relates to a large-capacity photocatalytic wastewater degradation reactor with a magnetron screen protection mechanism, belonging to the technical field of CO2F wastewater treatment. Background technique [0002] Microwave photocatalytic degradation treatment technology, as an effective harmless treatment technology for industrial wastewater containing organic pollutants, has attracted much attention in recent years. [0003] Regarding the microwave photocatalytic degradation technology, as an example, refer to the Chinese patent application with publication number CN102260003A. [0004] The Chinese patent application with the publication number CN102260003A uses microwaves as the excitation source to excite the electrodeless ultraviolet lamp to emit ultraviolet rays, and irradiates the suspension mixed with photocatalyst titanium dioxide inside the liquid. The electrodeless ultraviolet lamp is shrouded and protected by a quartz tube. An...

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Problems solved by technology

[0046] Based on the structure of the CN102260003A scheme, during its operation, the air pumped into the quartz tube cavity will be irradiated by ultraviolet rays, part of which will be converted into ozone, and most of the ozone-containing air formed in this way will be sent to the micropore aeration by pressure However, we know that the structure of the magnetron itself is not vacuum-tight, and the connection between the waveguide and the magnetron is generally not vacuum-tight, so all the relatively positive pressure A small part of the above-mentioned ozone-containing air will inevitably flow into the structural area where the magnetron is located, and the structural component materials of the magnetron, including its shell material, generally do not have the ability to resist ozone corrosion. Then, such a In the future, the ozone-containing air that enters the magnetron structure area in the reverse direction will inevitably form a corrosion effect on the magnetron components. The power of this corrosion effect may be difficult to detect in a short period of time on the laboratory scale. However, it will definitely appear after a little longer time. , the problem of reverse flow of ozone-containing air and corrosion of magnetron components cannot be avoided, this is the fifteenth problem

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