Microwave Synergistic Photocatalytic Wastewater Degradation Reactor Capable of Breaking Catalyst Agglomeration State

Abstract

The invention relates to a microwave synergistic photocatalytic wastewater degradation reactor capable of degrading catalyst agglomerates and belongs to the technical field of wastewater treatment. Various problems such as excessively weak catalyst entrapment link, excessively small single-pot treatment capacity in the reactor, high repetitive operation frequency, poor intensity in internal liquid circulation, incomplete ozone utilization, difficulty in distinguishing the ending time of degradation reaction and incapability of powerfully dissipating the catalyst agglomerates in situ exist in the existing related background technology. The microwave synergistic photocatalytic wastewater degradation reactor aims at solving the series problems. According to the microwave synergistic photocatalytic wastewater degradation reactor, a microwave irradiation region can be separated and limited through the structure, ozone-containing air bubble flow is guided to a key degradation reaction region through the structure, and an external cascaded multistage backwashing filter is used for realizing the fine entrapment of catalyst particles; and the catalyst agglomerates can be powerfully dissipated in situ through the structure, simultaneously a quartz tube is incidentally subjected to ultrasound cleaning, an ozone sensor and related mechanisms thereof are arranged at a tail gas exhaust port, and related power sources can be automatically and immediately turned off at the ending time of degradation reaction.

Description

technical field [0001] The invention relates to a microwave synergistic photocatalytic wastewater degradation reactor capable of releasing catalyst agglomeration state, and belongs 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 qu...

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Problems solved by technology

[0038] In the device structure expressed in the Chinese patent application with the publication number CN102260003A, the outer wall of the quartz tube used to screen the electrodeless ultraviolet lamp refers to the outer wall of the quartz tube, which is treated with the treated industrial wastewater for a long time. Contact, it is inevitable to gradually accumulate fouling. Of course, the fouling substances are mainly inorganic impurities that are not easily touched by the photocatalytic reaction. The fouling phenomenon formed by this mechanism is easy to be observed after the equipment has been running for a long time; Although the fouling layer on the outer wall of the quartz tube is only a thin layer, it is enough to significantly block the ultraviolet radiation of the electrodeless ultraviolet lamp, which will cause the actual treatment efficiency of the microwave photocatalytic reaction treatment device to be greatly reduced; The rising air bubbles in the reactor are too scattered and the flushing force is weak. It is really difficult to maintain the surface of the quartz tube by relying on the relatively dispersed air bubbles. In other words, the more dispersed air bubbles are more The weak scouring force is not enough to completely stop the fouling process on the surface of the quartz tube; during the use of the laboratory scale, the above-mentioned fouling problem is not easy to detect, but, on the industrial application scale, the fouling problem will undoubtedly be eliminated. Therefore, how to immediately and effectively remove the fouling layer on the outer wall of the quartz tube without dismantling the machine, and maintain the continuous high efficiency of the microwave photocatalytic treatment device, this problem cannot be ignored. Question 10

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