A Multipurpose Fixed Film Photocatalytic Liquid/Gas Phase Pollutant Degradation Reactor
A photocatalytic and fixed film technology, applied in the field of photocatalytic pollutant degradation, can solve the problems of lack of photocatalytic reactors, restricting the application of photocatalytic technology to engineering, etc., and achieve the effect of maximizing the utilization rate of light sources
Active Publication Date: 2021-08-10
WUHAN UNIV
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Problems solved by technology
[0004] After nearly 40 years of development, the research work in the field of photocatalysis has mostly focused on catalyst preparation, theoretical basic research and basic applications. However, there have been no examples of successful industrialization of photocatalytic technology in engineering applications. Absence, restricting photocatalytic technology from laboratory to engineering application
Method used
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Embodiment
[0049] figure 1 , 2 The structure of this embodiment is shown. A multi-purpose fixed-film photocatalytic liquid-phase / gas-phase pollutant degradation reactor includes a shell, a gas treatment area and a liquid treatment area. The inner wall of the housing is coated with a reflective coating. The gas processing area is set in the middle of the shell, and the liquid processing area is set at the upper and lower ends of the shell, and the two are independently isolated to operate independently.
[0050] 1. Liquid treatment area:
[0051] The upper liquid processing area includes a light source 7, a first liquid inlet pipe 1, and first and second turntables; the lower end of the liquid inlet pipe has a small hole, and the first and second turntables are arranged between the small holes.
[0052] The lower liquid processing area includes a light source 8, a second liquid inlet pipe 2, and third and fourth turntables; the upper end of the liquid inlet pipe has small holes, and t...
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The invention discloses a multi-purpose fixed-film photocatalytic liquid-phase / gas-phase pollutant degradation reactor, which comprises a casing, a gas processing area and a liquid processing area. The gas processing area is set in the middle of the shell, and the liquid processing area is set at the upper and lower ends of the shell, and the two are isolated. The device can degrade liquid and gaseous pollutants at the same time. The fixed membrane catalyst can effectively solve the problem of catalyst separation and reuse. The rotation of the turntable and fan blade can effectively solve the mass transfer limitation of liquid and gas. The combined use of the tubes contributes to the improvement of light utilization efficiency. By installing a catalyst attachment device on the turntable and adopting a micro-honeycomb design on the surface of the fan blade, the catalyst attachment area can be increased to expose more active sites, thereby improving the catalytic efficiency. The reactor has simple structure, convenient operation and easy enlargement.
Description
technical field [0001] The invention belongs to the technical field of photocatalytic pollutant degradation, and in particular relates to a multi-purpose fixed-film photocatalytic liquid-phase / gas-phase pollutant degradation reactor device. Background technique [0002] At present, the types and discharges of domestic sewage and industrial wastewater are increasing, and the composition is becoming more and more complex, containing many refractory organic substances, such as phenol, alkylbenzenesulfonic acid, chlorophenol, pesticides, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, nitro Aromatic compounds, dyes and humic acids, etc., some of which are even carcinogenic, teratogenic, mutagenic, etc., have great harm to the environment and human beings. [0003] The principle of photocatalytic oxidation technology is to use energy equal to or greater than that of semiconductor materials (TiO 2 , ZnO, CdS, etc.) light with a forbidden band width (generally below 3...
Claims
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IPC IPC(8): B01J19/12B01J19/18C02F1/30C02F1/72B01D53/88
CPCB01D53/007B01D53/885B01D2255/802B01J19/0053B01J19/122B01J19/18C02F1/30C02F1/725C02F2305/10
Inventor 马世娇赵雯雯沈雪松岳喜婷
Owner WUHAN UNIV