Photocatalysis aeration filter pool for water treatment

Abstract

The invention pertains to the technical field of water treatment and in particular relates to a photocatalysis aerated filter that is used for water treatment, comprising a water distribution area, a reaction area and a filtering area. The water distribution area is provided with a through hole water distribution sink; the reaction area is provided with a UV light tube, a through hole aerated tube and hollow glass microsphere powder filled with titanium dioxide; the filtering area at the bottom is a quartz sand filtering layer. The device not only has high mass transfer efficiency and high utility rate of luminous energy that are possessed by floating photocatalytic reaction devices, but also can retain the hollow glass microsphere filled with titanium dioxide in the reaction area through the quartz sand filtering layer, thereby recycling the photo-catalyst. The reaction area can not only adopt air aeration as mixing motive force, but also can adopt ozone mixing to improve reaction efficiency. The specific gravity of the hollow glass microsphere is smaller than that of water, therefore sludge, water and carrier can be easily separated during backwashing.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a photocatalytic aeration filter for water treatment. Background technique [0002] Using TiO 2 Under the irradiation of light of a specific wavelength, the photoelectric effect produces hydroxyl radicals with strong oxidizing ability. The photocatalytic oxidation process as the leading oxidant for degrading organic pollutants has been widely studied and applied in recent years. The advantages of this process technology are: (1 ) has a wide range of degradation and can degrade almost any organic matter, especially the chlorinated organic matter and polycyclic aromatic hydrocarbons that are difficult to treat by biodegradation; (2) the treatment efficiency is high, and generally only takes tens of minutes to several hours to obtain good Treatment effect; (3) The reaction conditions are mild, and the photocatalytic oxidation reaction can occur under ultraviolet...

AI Technical Summary

Problems solved by technology

Its advantage is that in the reaction, the pollutants are easy to contact with the photocatalyst, and there is no limitation of mass transmission, but the disadvantage is that the treatment efficiency is not high

Compared with the traditional suspension reactor, this type of reactor does not need to separate the catalyst. Compared with the annular membrane reactor, the reaction is not limited by mass transfer, but the disadvantage is that the collision between particles may cause the film to fall off.

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