Photocatalytic degradation treatment device of wastewater with organic pollutants

Abstract

The invention relates to a photocatalytic degradation treatment device of the wastewater with organic pollutants. The treatment device contains a box. The treatment device is characterized in that the inside of the box is provided with a plurality of relatively independent baffled chambers which are connnected end to end; the both ends of the box are separately provided with a water inlet and a water outlet; in each baffled chamber, a plurality of three-dimensional reticular bodies with immobilized catalyst are stacked at intervals, the center of each three-dimensional reticular body is provided with a through hole, a ultraviolet light source is inserted in the through hole, and an aeration pipe is arranged at the bottom of the baffled chambers; and each three-dimensional reticular body is formed by stacking several layers of reticular carrier, the space between the layers of reticular carrier is 1-3 times of the reticular width, the periphery of the reticular carrier is bent to the bottom surface relatively, the center of the reticular carrier is provided with an I-shaped notch, and the notch is bent to the bottom surface. An illumination device is inserted in the notch. By adopting the device of the invention, the organic matter in wastewater can be decomposed to a large extent.

Description

[0001] Original application number: 200910303709.8, [0002] Application date: June 26, 2009 [0003] Invention name: Production method of network catalyst for photocatalytic degradation of organic pollutants in wastewater and organic pollutants [0004] Wastewater Treatment Plant technical field [0005] The invention relates to a production method of a net catalyst for photocatalytically degrading organic pollutants in wastewater and an organic pollutant wastewater treatment device using the net catalyst. Background technique [0006] In recent years, my country's detergent industry has developed rapidly, and its output has increased year by year. In 2005, my country's synthetic detergent production was 5.1 million tons, in 2006 it was 5.5 million tons, in 2007 it reached 6 million tons, and in 2008 it is expected to be 6.5 million tons. At present, the surfactants that are widely used in my country are: anionic surfactants (mainly linear alkylbenzene sulfonat...

AI Technical Summary

Problems solved by technology

[0009] First, the quantum efficiency is low, and pure TiO 2 The recombination rate of photogenerated electron-gap pairs of photocatalysts is high, and the photocatalytic performance is not outstanding

Low photon quantum efficiency limits the industrial application of photocatalytic oxidation

[0010] Second, TiO 2 The selective adsorption is poor, and the product CO in the photocatalytic reaction process 2 It is very easy to adsorb on the surface of the catalyst, which greatly reduces the rate and selectivity of the photocatalytic reaction

[0011] Third, the intermediate products of degradation of organic pollutants are complex, there are many types of actual wastewater, the quality of various types of water varies greatly, the degree of difficulty of pollutant degradation is different, and the mechanisms are different. Industrial application of catalytic technology

[0012] Fourth, the effective distribution and fusion of photocatalysts and ultraviolet light sources

[0014] In domestic and foreign photocatalytic technology patents, most of the nano-titanium dioxide used for photocatalytic degradation is suspended or attached to hollow glass spheres, foam plastics, resins, wood chips, helical spring structure carriers, porous ceramics, and microfilaments. It is made into a floating or fixed bed photocatalytic system. In both methods, the catalyst and ultraviolet light cannot be fully and effectively contacted and fused, and the fluid catalyst in the entire catalytic system cannot be contacted uniformly and effectively, which is not conducive to the uniform and effective system. full response

Regardless of whether it is a suspended or packed fixed-bed catalyst, the catalyst will be damaged by collision due to the passage of fluid or the agitation of the airflow, causing the catalyst to lose

Therefore, it cannot meet the industrial application of photocatalytic oxidation technology

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