Ultraviolet light catalytic large capacity waste water degradation device with built-in agglomerate material-dissipation function

Abstract

The invention relates to an ultraviolet catalytic large capacity waste water degradation device with a built-in agglomerate material-dissipation function, and belongs to the technical field of wastewater processing technology. In conventional relevant technologies, problems of microwave energy waste, small waste water treatment capacity of a single tank, insufficient strength internal large circulation, short bubble rising path, insufficient oxygen supply concentration ratio in key areas, weak catalyst particle retention links, difficulty for distinguishing an end point of a degradation reaction, impossibility to powerfully dissipate agglomerate materials of the catalyst in situ, etc. Aiming at the above problems, the ultraviolet light catalytic large capacity waste water degradation device with the built-in agglomerate material-dissipation function is provided. According to the device, a metal cage is used to restrict microwave irradiation airspace, so that expansion of a reactor volume by a large margin becomes possible; the structure of the device is beneficial to strengthen supply of air atmosphere in the key degradation reaction areas; a cascaded three-stage back-flushing filter arranged out of the device is beneficial to fine retention of the catalyst particles; the structure can powerfully dissipate agglomerate materials of the catalyst in situ and simultaneously clean a quartz tube by ultrasonic waves incidentally; and the structure can automatically close relevant power supplies when the degradation reaction reaches the end point.

Description

technical field [0001] The invention relates to an ultraviolet photocatalytic large-capacity wastewater degradation device with the function of dissipating aggregates, 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 qua...

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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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