Photocatalytic sewage treatment device and sewage treatment method

Abstract

The invention provides a photocatalytic sewage treatment device and a sewage treatment method, and the photocatalytic sewage treatment device comprises a sewage treatment cavity which comprises a sewage reaction chamber and a catalyst treatment chamber; wherein a cyclone fan is arranged at the top of the sewage reaction chamber, a water inlet pipe is connected into the sewage reaction chamber, oneor more spray heads are connected to the water inlet pipe, and a water outlet pipe is connected to the bottom of the catalyst treatment chamber; wherein the cyclone fan can provide upward suction force, and the catalyst treatment chamber is provided with a first catalyst interception film. The sewage treatment device has the beneficial effects that a photocatalyst is dispersed into the sewage reaction chamber, then is uniformly mixed in a spraying manner, and then is combined with stirring to avoid deposition, so that the dispersity of the photocatalyst in water is fully guaranteed, the contact area of sewage and the photocatalyst is increased, and the reaction efficiency is improved; after being filtered by a film, the photocatalyst is dried, vibrated and separated, and then sucked by the suction force of the cyclone fan, so that the loss of the catalyst is avoided, and the recycling is convenient.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a photocatalytic sewage treatment device and a sewage treatment method. Background technique [0002] Photocatalytic technology is an efficient and clean water treatment technology, which has been increasingly widely studied in environmental pollution control, especially sewage treatment. Photocatalysts can generate electron-hole pairs with strong reactivity under light, which can Directly or indirectly participate in the redox reaction of organic matter and harmful microorganisms to realize the purification of water resources. [0003] At present, the types of integrated photoreaction devices are divided into suspension photocatalytic reaction devices, coating catalyst reaction devices and packed bed reaction devices according to the state of the catalyst; the suspension photocatalytic reaction device is to add photocatalyst powder to the solution to be treated , the advantage i...

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Problems solved by technology

[0003] At present, the types of integrated photoreaction devices are divided into suspension photocatalytic reaction devices, coating catalyst reaction devices and packed bed reaction devices according to the state of the catalyst; the suspension photocatalytic reaction device is to add photocatalyst powder to the solution to be treated , the advantage is that the pollutants are easy to contact with the photocatalyst during the reaction, and there is no limitation of mass transmission. Many of them use aeration devices, which will cause loss of solid nano-catalytic materials entering the aeration device, and the stirring device cannot disperse them well in water; especially when recycling nano-catalysts for reuse, catalyst deposition, regardless of It is difficult to disperse evenly by using an aeration device or a stirring device, so it will affect the effect of the subsequent water treatment reaction, and it is also one of the reasons why photocatalysts are difficult to reuse

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