A photocatalytic and biological bed compound vocs purification equipment

Abstract

The invention belongs to the technical field of exhaust gas purification, specifically a photocatalytic and biological bed composite VOCs purification equipment, including a reaction chamber, an elution pool, a photocatalytic device, a biodegradation layer, a biofiltration layer, a nozzle, and an air intake pipe , gas outlet and feedback adjustment device; the elution pool is located in the reaction chamber, and the elution pool is located at the bottom of the reaction chamber; the photocatalytic device is located in the reaction chamber, and the photocatalytic device is located above the elution pool; The degradation layer is used to biodegrade the VOCs gas; the biofiltration layer is located in the reaction chamber; the nozzles are located in the reaction chamber, and the nozzles are divided into two groups, one group of nozzles is located between the biodegradation layer and the biofiltration layer, and the other group of nozzles is located in the reaction chamber. Above the biological filter layer; the air inlet pipe is located under the elution tank, and the air inlet pipe is used to inject VOCs gas into the elution tank; the gas outlet is located on the upper part of the reaction chamber, and the gas outlet is used to discharge the evolved gas out of the reaction chamber.

Description

technical field [0001] The invention belongs to the technical field of exhaust gas purification, in particular to a photocatalytic and biological bed composite VOCs purification equipment. Background technique [0002] During the production process of the industrial industry, a large amount of waste gas containing VOCs will be generated. If these waste gases are directly discharged into the atmosphere, it will not only cause air pollution, but also lead to waste of materials and increase production costs. In recent years, VOCs emission control work has been carried out in various places. Commonly used VOCs treatment technologies include combustion method, biological method, absorption method, adsorption method, luminescent catalytic method, etc. These methods have certain effects on the treatment of VOCs, but they are also All have their own shortcomings. [0003] Patent Document 1: A compound biological bed purification equipment for VOCs, application number: 2016204411534...

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Problems solved by technology

[0004] In the above patent document 1, the VOCs gas is treated by the method of elution oxidation and biodegradation absorption. This invention can effectively treat the VOCs gas, but the content of VOCs treated per unit time is constant. This invention does not consider how to solve the problem. The problem of the change of the amount of gas passed into the purification equipment per unit time is that when the gas is too much, the purification equipment cannot be purified in time, and there will be the problem of incomplete VOCs purification. This invention needs to be improved, and only biological methods are used. Treating VOCs with stripping oxidation method, the purification efficiency is low, and it is not suitable for a large amount of VOCs gas purification

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