Planar tubular continuous flow-photocatalytic oxidation degradation water treatment device, system and method

A technology of photocatalytic oxidation and water treatment device, which is applied in the direction of oxidized water/sewage treatment, special compound water treatment, light water/sewage treatment, etc. Low energy utilization rate and other issues, to achieve the effect of improving light energy utilization efficiency, reducing device operation difficulty, and high light energy utilization rate

Pending Publication Date: 2022-05-20
ZHEJIANG WANLI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the static sequencing batch mode, the reactor occupies a large space, has many operating links, low light energy utilization rate, and small processing capacity per unit time, which limits the photocatalytic degradation water treatment capacity.

Method used

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  • Planar tubular continuous flow-photocatalytic oxidation degradation water treatment device, system and method
  • Planar tubular continuous flow-photocatalytic oxidation degradation water treatment device, system and method
  • Planar tubular continuous flow-photocatalytic oxidation degradation water treatment device, system and method

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Experimental program
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Effect test

Embodiment 1

[0051] This embodiment adopts serpentine planar tubular reactor (with attached Figure 4 As shown), the material is high light-transmitting quartz glass, the inner diameter is 5mm, the wall thickness is 1mm, the length of a single plane tube is 10cm, the distance between tubes is 2mm, the total length is 100cm, the ambient temperature is 30°C, the external light source is 300W analog fluorescent lamp, and the distance from the plane tube 20cm, 10μmol / L Rhodamine B solution is simulated waste liquid, Ce-doped ZnO nanoparticles are photocatalysts (for commercially available or photocatalysts obtained by conventional doping process, the following examples are also the same), and the dosage is 1.0g / 1000mL, the hydrogen peroxide concentration is 5mmol / L, the flow rate is 10.0mL / min, and the degradation rate is 97.5%;

[0052] Change the concentration of hydrogen peroxide to 0mmol / L and the other conditions remain unchanged. The degradation rate is 38.2%. Turn off the simulated flu...

Embodiment 2

[0060] This embodiment adopts back-shaped planar tubular reactor (with attached Figure 5 As shown, in order to facilitate the connection of the medium inlet and outlet, the pipes located at the inlet and outlet positions can also be set perpendicular to the overall planar tubular reactor), the material is high light-transmitting quartz glass, the inner diameter is 5mm, and the wall thickness is 1mm. The tube spacing is 2mm, the total length is 100cm, the ambient temperature is 30°C, the external light source is a 300W simulated fluorescent lamp, and the distance from the flat tube is 20cm, the 10μmol / L rhodamine B solution is the simulated waste solution, Ce doped with TiO 2 Nanoparticles are photocatalysts, the dosage is 1.0g / 1000mL, the concentration of potassium persulfate is 10mmol / L, and the flow rate is 20.0mL / min. The degradation rate is 99.4%. Change the concentration of potassium persulfate to 0mmol / L and the other conditions remain unchanged. The degradation rate wa...

Embodiment 3

[0062] The present embodiment adopts the helical planar tubular reactor (as attached image 3 As shown, in order to facilitate the connection of the medium inlet and outlet, the pipes located at the inlet and outlet positions can also be set perpendicular to the overall planar tubular reactor), the material is high light-transmitting quartz glass, the inner diameter is 5mm, and the wall thickness is 1mm. The tube spacing is 2mm, the total length is 100cm, the ambient temperature is 30°C, the external light source is a 300W simulated fluorescent lamp, the distance from the flat tube is 20cm, the 10μmol / L rhodamine B solution is the simulated waste solution, Fe 3 o 4 Magnetic core-shell nanoparticles doped with Ce as the core and ZnO as the shell are used as photocatalysts. The dosage is 2.0g / 1000mL, the hydrogen peroxide concentration is 10mmol / L, and the flow rate is 10.0mL / min. The hydrogen concentration is 0mmol / L and the degradation rate is 31.7%, and the degradation rate ...

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Abstract

The invention relates to a planar tubular continuous flow-photocatalytic oxidation degradation water treatment device and system and a use method, the planar tubular continuous flow-photocatalytic oxidation degradation water treatment device comprises a planar tubular reactor, the planar tubular reactor is provided with a multi-bending channel part, the multi-bending channel part is located on the same plane, the multi-bending channel part is provided with a medium inlet and a medium outlet, and the medium inlet is communicated with the medium outlet. A medium flows in from the inlet and flows out from the outlet and is in a continuous flowing state; the medium contains a photocatalyst and an oxidizing agent; a light source is arranged at the upper part of the planar tubular reactor, the light source vertically irradiates the planar tubular reactor, and the irradiation range of the light source is not smaller than the area of the planar tubular reactor; compared with a traditional static sequencing batch water treatment method, the technical scheme is flexible and efficient, light is used as an energy supply and activation mode, online simultaneous photocatalytic degradation and chemical advanced oxidative degradation are cooperatively achieved, and the photocatalytic oxidative degradation water treatment capacity and range are improved.

Description

technical field [0001] The invention belongs to the technical field of water pollution control and treatment, and in particular relates to a planar tube type continuous flow-photocatalytic oxidation degradation water treatment device, system and method. Background technique [0002] Water is the source of life, and water is also the most widely used solvent. With the rapid development of modern industry, agriculture and social life, a large amount of industrial and agricultural waste liquid and domestic wastewater containing toxic and harmful inorganic and organic pollutants are produced, which urgently need to be treated and discharged or utilized . The semiconductor photocatalytic degradation environmental pollution control technology driven by clean energy and solar energy has received extensive attention in research and application. It not only avoids the consumption of increasingly depleted fossil energy, but also reduces secondary pollution emissions in the process of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/32C02F1/72C02F1/78
CPCC02F1/30C02F1/32C02F1/725C02F1/722C02F1/78C02F2305/10C02F2301/028Y02W10/37
Inventor 张凯龙高俊方妍李涛胡玲玲王胤惠
Owner ZHEJIANG WANLI UNIV
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