Fluidized bed photocatalytic reactor-based advanced oxidation equipment

Abstract

The invention discloses fluidized bed photocatalytic reactor-based advanced oxidation equipment which comprises a tank body, a liquid storage tank and a liquid discharging pipe, wherein the top of anannular pipe is uniformly connected with a plurality of material outlet heads; one side of the middle part of the annular pipe is connected with a water inlet pipe; one side of the lower part of the tank body is connected with a hydrogen peroxide pipeline and an ozone pipeline; the middle end of the inside of the tank body is longitudinally connected with a water flow channel; a plurality of ultraviolet lamp tubes are uniformly mounted between the outside of the water flow channel and the middle end of the inside of the tank body; an ozone catalytic oxidation filler layer is mounted inside a loading barrel; one side of the upper part of the tank body is connected with a backflow pipe; the bottom of the backflow pipe is connected with the water inlet pipe. The device reduces introduction ofexternal chemical substances, reduces the operation cost and improves the reaction efficiency; based on chemical Fenton reaction, the fluidized bed photocatalytic reactor-based advanced oxidation equipment has internal and external backflow circulations, so that a good flowing state guarantees the reaction efficiency and no short flow and no dead zones; by adoption of a vertical type reactor, theequipment occupies a small space.

Description

technical field [0001] The invention relates to an oxidation device, in particular to an advanced oxidation device based on a fluidized bed photocatalytic reactor, and belongs to the application field of wastewater treatment. Background technique [0002] High-concentration and refractory organic wastewater has always been a problem in the industry. Generally speaking, this type of wastewater has the characteristics of small flow and high concentration, so it is not suitable to use biochemical processes directly. At present, there are only two technologies for large-scale industrial application: chemical Fenton and ozone oxidation. Other advanced oxidation processes are mostly in the laboratory test or small-scale application research stage. The chemical Fenton reaction requires strict control of the reaction pH. At the same time, due to A large amount of hydrogen peroxide and iron salt need to be added. In addition, because the ferrous salt catalyst cannot be recycled, the ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an advanced oxidation equipment based on a fluidized bed photocatalytic reactor, which can solve the problem that the existing oxidation equipment has low purification efficiency, takes up a large space, adopts a single process, and cannot perform multiple processes at the same time. , a technical problem that is difficult to use in combination with several processes

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