Waste water microwave photocatalytic degrading device with ozone-containing tail gas recycling mechanism

Abstract

The invention relates to a waste water microwave photocatalytic degrading device with an ozone-containing tail gas recycling mechanism, belonging to the technical field of the waste water treatment. In the existing waste water microwave photocatalytic degrading technology, the ozone-containing tail gas is possibly discharged in the air directly, or catalyzed and decomposed through an ozone catalyzing and decomposing device or oxidized, reduced and decomposed by active carbon; the methods of tail gas treatment can cause the environmental pollution or the extra energy and material consumption, therefore, the methods are not ideal. The scheme aims at solving the problem. In the scheme, the ozone-containing tail gas from a microwave photocatalytic reactor is guided to a polluted water pond as the source water and then uniformly released by an aerating head installed in the polluted water pond; and the water body in the polluted water pond is pre-oxidized by using the seemingly unimportant residual oxidizing ability hidden in the tail gas, so that the unnecessary waste of precious ozone oxidant resource is avoided, and the extra energy and material consumptions are avoided or the ozone pollution is directly emptied.

Description

technical field [0001] The invention relates to a waste water microwave photocatalytic degradation device with an ozone-containing tail gas recycling mechanism, belonging 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 developed rapidly in recent years. [0003] Regarding the microwave photocatalytic degradation technology, as an example, refer to the Chinese patent application with publication number CN102260003A. This application has undoubtedly played a non-negligible role in promoting the progress of microwave photocatalytic wastewater degradation technology. [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 susp...

AI Technical Summary

Problems solved by technology

[0005] As far as the ozone tail gas decomposition technology is concerned, most of the known treatment methods in the prior art rely on the catalytic decomposition of an ozone decomposition catalyst. The operation of this catalytic decomposition mechanism usually requires maintaining a temperature of about 150-250 degrees Celsius; followed by Activated carbon performs reaction digestion based on a redox mechanism; then, from the perspective of microwave photocatalytic wastewater degradation treatment, no matter which of the above-mentioned tail gas treatment methods, its essence is to increase additional energy consumption or material loss; Moreover, even if only a small amount of ozone is entrained in the tail gas, the potential oxidation capacity has not been fully utilized, which cannot but be said to be a technical imperfection.

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