Photocatalysis device and valve control application thereof

Abstract

The invention discloses a photocatalysis device which is formed by loading a photocatalysis material on metal foam in ultraviolet or visible light radiation, wherein the metal foam takes the shape of a flake, a column or a ring; the metal foam is foamed aluminum, foamed magnalium, foamed iron, foamed nickel or foamed nickel-iron alloy; or the metal foam is obtained by plating a metal layer on the surface of macromolecule foamed foam; all ultraviolet lamps can be arranged on an upper cover, the electric connecting parts are insulated and sealed, and the upper cover is subsequently sealed on a shell; metal foam cylinders, blocks or wave strips are arranged on the shell in advance. The metal foam disclosed by the invention is high in reflection rate, so that the device is long in durability and low in operation cost, and the volume of effective catalysis function of the device is increased.

Description

technical field [0001] The invention relates to a device and application for treating environmental pollution by a photochemical oxidation method. Background technique [0002] With the rapid development of industry, the types and quantities of wastewater have increased rapidly, and the pollution of water bodies has become increasingly extensive and serious, threatening human health and safety. Wastewater treatment is more difficult and more important due to the more complex composition of wastewater, some of which are toxic. Some typical high-concentration organic wastewater, such as coking wastewater, pharmaceutical wastewater, textile / printing and dyeing wastewater, petroleum / chemical wastewater, landfill leachate, etc., the effluent COD concentration of the main production sections is generally above 3000 ~ 5000mg / L, some The effluent of the section even exceeds 10,000 mg / L, and even the mixed water of each section is generally above 3,000 mg / L. The reason why high-con...

AI Technical Summary

Problems solved by technology

[0011] As can be seen above, TiO 2 Photocatalyst is the main device unit of photocatalytic oxidation on the surface of three-dimensional carbon foam, carbon material and foam honeycomb ceramic for air or water treatment (especially water treatment). The photocatalytic material is effective (reflection and refraction performance is not good), and the action area (thickness) is only about 2mm. In fact, thin foam cellular ceramics cannot be prepared and put into practical use, which affects the intensity and efficiency of photocatalysis, which also fixes costs and Reasons for higher processing costs

Although the photocatalysis and new photocatalytic additives loaded with titanium dioxide have the activity of catalytically decomposing water molecules into hydrogen and oxygen, they have not been widely used in water treatment. The main reason is that the effective catalytic area is too small and there is no The catalytic reaction cannot be carried out in the ultraviolet light area, and the honeycomb ceramics can only flow the water on the surface that it touches, and cannot make all the water bodies undergo catalytic reactions.

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