Large-capacity photocatalytic reactor capable of naturally depleting secondary ozone and used for wastewater degradation

Abstract

The invention relates to a large-capacity photocatalytic reactor capable of naturally depleting secondary ozone and used for wastewater degradation, which belongs to the technical field of wastewater treatment. In the conventional related background technology, various problems of nanometer photocatalyst loss, microwave energy waste, excessively small single-pot wastewater treatment capacity in the reactor, insufficient intensity in large internal liquid circulation and difficulty of distinguishing of the ending time of degradation reaction exist. In order to solve the series problems, a metal cage is used for constraining microwaves for realizing the large-capacity expansion of the reactor; by adopting the structure, the large internal liquid circulation is enhanced; an external cascaded tertiary backwashing filter is beneficial to fine interception of fine catalyst particles; the material section of a filter element is not; and an ozone sensor is assembled at a tail gas exhaust port, the electrical signal induced by the ozone sensor is transmitted to a power supply controller connected with a magnetron and an air pump, so that the energy injection can be stopped immediately at the ending time of degradation reaction, the generation process of surplus ozone is terminated immediately, and the energy waste and the secondary pollution are avoided.

Description

technical field [0001] The invention relates to a large-capacity photocatalytic reactor for degrading waste water that naturally depletes secondary ozone, and belongs to the technical field of CO2F waste water 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. ,...

AI Technical Summary

Problems solved by technology

[0030] The operation of the wastewater catalytic degradation reactor needs to consume energy. Therefore, the operator will definitely hope that when the wastewater degradation reaction reaches the end, it can be impartial, neither too early nor too late to stop the continuous injection into the reactor. Energy; if the time to stop injecting energy is too early, the degradation of wastewater will not be complete; and if the end of the reaction has already been reached, but still continue to inject energy into the reactor, it is undoubtedly a waste of precious energy

As the structure of the CN102260003A scheme of the technical background of this case, any instant information cannot be given to the terminal moment of the wastewater degradation reaction, so, the terminal point of the wastewater degradation reaction can only be estimated by experience; and the terminal point of the wastewater degradation reaction is estimated by experience, That is obviously unsatisfactory; then, how to make an immediate information output that is neither advanced nor delayed for the end point of the wastewater degradation reaction, and immediately shut down the energy input to the reactor at just the right moment is a technology that cannot be underestimated Threshold, this is the seventh question

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