Reactor capacity expansion method with upgraded catalyst interception mechanism for photocatalytic degradation of wastewater

Abstract

The invention relates to a reactor capacity expansion method with an upgraded catalyst interception mechanism for photocatalytic degradation of wastewater, belonging to the technical field of wastewater treatment and aiming at the problems of catalyst loss, microwave energy waste, small single-tank capacity, incomplete ozone utilization, difficultly distinguished endpoint moment of degradation reaction, failure in in-situ strong dissipation of catalyst aggregate, failure in detecting catalyst aggregation in time in the existing related technique. The method provided by the invention comprises the following main steps of: restraining microwave so that the microwave only irradiates a specified region; expanding the dimension of the reactor; improving the intensity of air supply to an important degradation reaction region; intercepting the catalyst stage by stage by using an external cascaded three-stage back flush type filter; powerfully dissipating the catalyst aggregate in situ by using ultrasonic waves generated from the bottom of the reactor, and simultaneously, cleaning a quartz tube; monitoring the reaction process by using an ozone sensor, and automatically cutting off the related power when reaching the degradation endpoint; initiatively and automatically checking the aggregation tendency of the catalyst, and so on.

Description

technical field [0001] The invention relates to a reactor expansion method for upgrading a catalyst interception mechanism for photocatalytic degradation of wastewater, 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...

AI Technical Summary

Problems solved by technology

[0044] Based on the structure of the CN102260003A scheme, during its operation, the water pump that fills the reactor cavity with waste water cannot judge whether the water level inside the reactor is high or low, and the operator can only rely on experience or visual inspection to turn off the water pump that fills the waste water in time Motor, if the experience is wrong or the visual response is not timely enough, it is easy to overflow the reactor due to excessive filling of waste water, which will cause unnecessary trouble; The membrane module pumps water outward. Without knowing the water level inside the reactor, the timing of shutting down the pump can only be judged based on experience or visual inspection. This operation is obviously unreliable, and it is very easy to make mistakes due to experience or visual inspection. If the response is not timely, the water pump cannot be shut down in time, and this kind of dry pumping and idling can easily cause the motor of the water pump to burn out. This problem cannot be ignored. This is the fourteenth problem.