Method for expanding capacity of reactor capable of actively detecting agglomeration incentives and used for photocatalytic wastewater degradation

Abstract

The invention relates to a method for expanding the capacity of a reactor capable of actively detecting agglomeration incentives and used for photocatalytic wastewater degradation, belonging to the technical field of wastewater treatment. The following problems exist in the prior related art: the microwave energy is wasted, the single-tank wastewater treatment capacity is smaller, the internal high cyclic strength is insufficient, the oxygen supply concentration ratios in key areas are insufficient, the catalysts run away, the degradation reaction endpoint is difficult to distinguish, catalyst agglomerates can not be dispersed in situ by strong force, and occurrence of catalyst agglomeration can not be perceived timely. The invention aims at the problems. The method comprises the main steps of constraining microwave irradiation airspace with a metal cage to be convenient for substantial capacity expansion of the reactor; releasing the bubble flow to the key degradation reaction areas in a concentrated manner; using an external cascaded three-stage back-flushing filter to intercept the catalysts by stages; using ultrasonic waves from the bottom of the reactor to disperse the catalyst agglomerates in situ by strong force, and simultaneously cleaning quartz tubes incidentally; using an ozone sensor to perceive the degradation endpoint, and automatically disconnecting the power supply at the degradation endpoint; and automatically detecting the tendency of catalyst agglomeration.

Description

technical field [0001] The invention relates to a method for expanding the capacity of a photocatalytic wastewater degradation reactor capable of actively detecting agglomeration incentives, 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...

AI Technical Summary

Problems solved by technology

As mentioned earlier, when some pH values ​​are not pre-adjusted in place and the pH value is inappropriate, titanium dioxide particles are prone to agglomeration, which will affect its effective working interface area and affect its photocatalytic performance; especially for the CN102260003A proposal. Those relatively small particle size sections in the applicable catalyst particle size range are more prone to agglomeration problems caused by improper pH value pre-adjustment and inappropriate pH value; for this kind of catalyst particle agglomeration , it is necessary to take effective measures immediately to carry out the deagglomeration operation for the agglomerates; based on the structure of the CN102260003A scheme, the operator cannot immediately detect the agglomeration inside the reactor, and thus cannot make immediate disposal, thus , the limited efficiency of the reactor which can only be a small-scale structure due to many factors will be further reduced; therefore, in the application and operation of the reactor, especially, for example, in the possible large reactor or giant reaction In the application and operation of reactors, how to instantly perceive the main parameters that cause catalyst particles to agglomerate inside the reactor is a key issue. This is the eleventh issue.