Expansion method for photocatalytic waste water degradation reactor capable of comprehensively and completely utilizing secondary ozone

Abstract

The invention relates to an expansion method for a photocatalytic waste water degradation reactor capable of comprehensively and completely utilizing secondary ozone and belongs to the technical field of waste water treatment. The problems that catalyst interception process is weak, microwave energy is not used very well, the single-tank waste water treatment capacity of the reactor is small, the general circulation strength of internal liquid is insufficient, the degradation reaction endpoint time is difficult to distinguish, etc. exist in the existing related technologies. For solving the problems, the invention provides the scheme which mainly comprises the following steps of: gathering the microwave irradiation range by virtue of a metal cage; bunching and raising bubble stream by virtue of a megaphone-shaped member; expanding the size of the reactor; intercepting nanometer photocatalyst particles level by level by virtue of an external cascaded three-level back flush type filter; and erecting an ozone sensor on a tail gas discharge outlet and transmitting an electric signal output by the ozone sensor to a power supply controller connected with a magnetron and an air pump. By utilizing the expansion method, energy injection to the reactor can be closed immediately and the ozone generation progress can be stopped immediately when degradation reaction comes to the end.

Description

technical field [0001] The invention relates to a method for expanding the capacity of a photocatalytic wastewater degradation reactor that fully utilizes secondary ozone, 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...

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